Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "As usual, the drivers/tee and drivers/reset subsystems get merged
  here, with the expected set of smaller updates and some new hardware
  support. The tee subsystem now supports device drivers to be attached
  to a tee, the first example here is a random number driver with its
  implementation in the secure world.

  Three new power domain drivers get added for specific chip families:
   - Broadcom BCM283x chips (used in Raspberry Pi)
   - Qualcomm Snapdragon phone chips
   - Xilinx ZynqMP FPGA SoCs

  One new driver is added to talk to the BPMP firmware on NVIDIA
  Tegra210

  Existing drivers are extended for new SoC variants from NXP, NVIDIA,
  Amlogic and Qualcomm"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (113 commits)
  tee: optee: update optee_msg.h and optee_smc.h to dual license
  tee: add cancellation support to client interface
  dpaa2-eth: configure the cache stashing amount on a queue
  soc: fsl: dpio: configure cache stashing destination
  soc: fsl: dpio: enable frame data cache stashing per software portal
  soc: fsl: guts: make fsl_guts_get_svr() static
  hwrng: make symbol 'optee_rng_id_table' static
  tee: optee: Fix unsigned comparison with less than zero
  hwrng: Fix unsigned comparison with less than zero
  tee: fix possible error pointer ctx dereferencing
  hwrng: optee: Initialize some structs using memset instead of braces
  tee: optee: Initialize some structs using memset instead of braces
  soc: fsl: dpio: fix memory leak of a struct qbman on error exit path
  clk: tegra: dfll: Make symbol 'tegra210_cpu_cvb_tables' static
  soc: qcom: llcc-slice: Fix typos
  qcom: soc: llcc-slice: Consolidate some code
  qcom: soc: llcc-slice: Clear the global drv_data pointer on error
  drivers: soc: xilinx: Add ZynqMP power domain driver
  firmware: xilinx: Add APIs to control node status/power
  dt-bindings: power: Add ZynqMP power domain bindings
  ...

Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt

@@ -58,7 +58,11 @@ This binding for the SCU power domain providers uses the generic power
 domain binding[2].
 
 Required properties:
-- compatible:		Should be "fsl,imx8qxp-scu-pd".
+- compatible:		Should be one of:
+			  "fsl,imx8qm-scu-pd",
+			  "fsl,imx8qxp-scu-pd"
+			followed by "fsl,scu-pd"
+
 - #power-domain-cells:	Must be 1. Contains the Resource ID used by
 			SCU commands.
 			See detailed Resource ID list from:
@@ -157,7 +161,7 @@ firmware {
 		};
 
 		pd: imx8qx-pd {
-			compatible = "fsl,imx8qxp-scu-pd";
+			compatible = "fsl,imx8qxp-scu-pd", "fsl,scu-pd";
 			#power-domain-cells = <1>;
 		};
 

Documentation/devicetree/bindings/bus/imx-weim.txt

@@ -47,9 +47,9 @@ Optional properties:
 Timing property for child nodes. It is mandatory, not optional.
 
  - fsl,weim-cs-timing:	The timing array, contains timing values for the
-			child node. We can get the CS index from the child
-			node's "reg" property. The number of registers depends
-			on the selected chip.
+			child node. We get the CS indexes from the address
+			ranges in the child node's "reg" property.
+			The number of registers depends on the selected chip:
 			For i.MX1, i.MX21 ("fsl,imx1-weim") there are two
 			registers: CSxU, CSxL.
 			For i.MX25, i.MX27, i.MX31 and i.MX35 ("fsl,imx27-weim")
@@ -80,3 +80,29 @@ Example for an imx6q-sabreauto board, the NOR flash connected to the WEIM:
 					0x0000c000 0x1404a38e 0x00000000>;
 		};
 	};
+
+Example for an imx6q-based board, a multi-chipselect device connected to WEIM:
+
+In this case, both chip select 0 and 1 will be configured with the same timing
+array values.
+
+	weim: weim@21b8000 {
+		compatible = "fsl,imx6q-weim";
+		reg = <0x021b8000 0x4000>;
+		clocks = <&clks 196>;
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges = <0 0 0x08000000 0x02000000
+			  1 0 0x0a000000 0x02000000
+			  2 0 0x0c000000 0x02000000
+			  3 0 0x0e000000 0x02000000>;
+		fsl,weim-cs-gpr = <&gpr>;
+
+		acme@0 {
+			compatible = "acme,whatever";
+			reg = <0 0 0x100>, <0 0x400000 0x800>,
+				<1 0x400000 0x800>;
+			fsl,weim-cs-timing = <0x024400b1 0x00001010 0x20081100
+				0x00000000 0xa0000240 0x00000000>;
+		};
+	};

Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt

+--------------------------------------------------------------------------
+=  Zynq UltraScale+ MPSoC nvmem firmware driver binding =
+--------------------------------------------------------------------------
+The nvmem_firmware node provides access to the hardware related data
+like soc revision, IDCODE... etc, By using the firmware interface.
+
+Required properties:
+- compatible: should be "xlnx,zynqmp-nvmem-fw"
+
+= Data cells =
+Are child nodes of silicon id, bindings of which as described in
+bindings/nvmem/nvmem.txt
+
+-------
+ Example
+-------
+firmware {
+	zynqmp_firmware: zynqmp-firmware {
+		compatible = "xlnx,zynqmp-firmware";
+		method = "smc";
+
+		nvmem_firmware {
+			compatible = "xlnx,zynqmp-nvmem-fw";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			/* Data cells */
+			soc_revision: soc_revision {
+				reg = <0x0 0x4>;
+			};
+		};
+	};
+};
+
+= Data consumers =
+Are device nodes which consume nvmem data cells.
+
+For example:
+	pcap {
+		...
+
+		nvmem-cells = <&soc_revision>;
+		nvmem-cell-names = "soc_revision";
+
+		...
+	};

Documentation/devicetree/bindings/opp/opp.txt

@@ -129,6 +129,9 @@ Optional properties:
 - opp-microamp-<name>: Named opp-microamp property. Similar to
   opp-microvolt-<name> property, but for microamp instead.
 
+- opp-level: A value representing the performance level of the device,
+  expressed as a 32-bit integer.
+
 - clock-latency-ns: Specifies the maximum possible transition latency (in
   nanoseconds) for switching to this OPP from any other OPP.
 

Documentation/devicetree/bindings/power/fsl,imx-gpcv2.txt

@@ -32,6 +32,9 @@ Required properties:
 Optional properties:
 
 - power-supply: Power supply used to power the domain
+- clocks: a number of phandles to clocks that need to be enabled during
+  domain power-up sequencing to ensure reset propagation into devices
+  located inside this power domain
 
 Example:
 

Documentation/devicetree/bindings/power/qcom,rpmpd.txt

+Qualcomm RPM/RPMh Power domains
+
+For RPM/RPMh Power domains, we communicate a performance state to RPM/RPMh
+which then translates it into a corresponding voltage on a rail
+
+Required Properties:
+ - compatible: Should be one of the following
+	* qcom,msm8996-rpmpd: RPM Power domain for the msm8996 family of SoC
+	* qcom,sdm845-rpmhpd: RPMh Power domain for the sdm845 family of SoC
+ - #power-domain-cells: number of cells in Power domain specifier
+	must be 1.
+ - operating-points-v2: Phandle to the OPP table for the Power domain.
+	Refer to Documentation/devicetree/bindings/power/power_domain.txt
+	and Documentation/devicetree/bindings/opp/opp.txt for more details
+
+Refer to <dt-bindings/power/qcom-rpmpd.h> for the level values for
+various OPPs for different platforms as well as Power domain indexes
+
+Example: rpmh power domain controller and OPP table
+
+#include <dt-bindings/power/qcom-rpmhpd.h>
+
+opp-level values specified in the OPP tables for RPMh power domains
+should use the RPMH_REGULATOR_LEVEL_* constants from
+<dt-bindings/power/qcom-rpmhpd.h>
+
+	rpmhpd: power-controller {
+		compatible = "qcom,sdm845-rpmhpd";
+		#power-domain-cells = <1>;
+		operating-points-v2 = <&rpmhpd_opp_table>;
+
+		rpmhpd_opp_table: opp-table {
+			compatible = "operating-points-v2";
+
+			rpmhpd_opp_ret: opp1 {
+				opp-level = <RPMH_REGULATOR_LEVEL_RETENTION>;
+			};
+
+			rpmhpd_opp_min_svs: opp2 {
+				opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
+			};
+
+			rpmhpd_opp_low_svs: opp3 {
+				opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+			};
+
+			rpmhpd_opp_svs: opp4 {
+				opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+			};
+
+			rpmhpd_opp_svs_l1: opp5 {
+				opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+			};
+
+			rpmhpd_opp_nom: opp6 {
+				opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+			};
+
+			rpmhpd_opp_nom_l1: opp7 {
+				opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
+			};
+
+			rpmhpd_opp_nom_l2: opp8 {
+				opp-level = <RPMH_REGULATOR_LEVEL_NOM_L2>;
+			};
+
+			rpmhpd_opp_turbo: opp9 {
+				opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
+			};
+
+			rpmhpd_opp_turbo_l1: opp10 {
+				opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>;
+			};
+		};
+	};
+
+Example: rpm power domain controller and OPP table
+
+	rpmpd: power-controller {
+		compatible = "qcom,msm8996-rpmpd";
+		#power-domain-cells = <1>;
+		operating-points-v2 = <&rpmpd_opp_table>;
+
+		rpmpd_opp_table: opp-table {
+			compatible = "operating-points-v2";
+
+			rpmpd_opp_low: opp1 {
+				opp-level = <1>;
+			};
+
+			rpmpd_opp_ret: opp2 {
+				opp-level = <2>;
+			};
+
+			rpmpd_opp_svs: opp3 {
+				opp-level = <3>;
+			};
+
+			rpmpd_opp_normal: opp4 {
+				opp-level = <4>;
+			};
+
+			rpmpd_opp_high: opp5 {
+				opp-level = <5>;
+			};
+
+			rpmpd_opp_turbo: opp6 {
+				opp-level = <6>;
+			};
+		};
+	};
+
+Example: Client/Consumer device using OPP table
+
+	leaky-device0@12350000 {
+		compatible = "foo,i-leak-current";
+		reg = <0x12350000 0x1000>;
+		power-domains = <&rpmhpd SDM845_MX>;
+		operating-points-v2 = <&leaky_opp_table>;
+	};
+
+
+	leaky_opp_table: opp-table {
+		compatible = "operating-points-v2";
+
+		opp1 {
+			opp-hz = /bits/ 64 <144000>;
+			required-opps = <&rpmhpd_opp_low>;
+		};
+
+		opp2 {
+			opp-hz = /bits/ 64 <400000>;
+			required-opps = <&rpmhpd_opp_ret>;
+		};
+
+		opp3 {
+			opp-hz = /bits/ 64 <20000000>;
+			required-opps = <&rpmpd_opp_svs>;
+		};
+
+		opp4 {
+			opp-hz = /bits/ 64 <25000000>;
+			required-opps = <&rpmpd_opp_normal>;
+		};
+	};

Documentation/devicetree/bindings/power/reset/xlnx,zynqmp-power.txt

+--------------------------------------------------------------------
+Device Tree Bindings for the Xilinx Zynq MPSoC Power Management
+--------------------------------------------------------------------
+The zynqmp-power node describes the power management configurations.
+It will control remote suspend/shutdown interfaces.
+
+Required properties:
+ - compatible:		Must contain:	"xlnx,zynqmp-power"
+ - interrupts:		Interrupt specifier
+
+-------
+Example
+-------
+
+firmware {
+	zynqmp_firmware: zynqmp-firmware {
+		compatible = "xlnx,zynqmp-firmware";
+		method = "smc";
+
+		zynqmp_power: zynqmp-power {
+			compatible = "xlnx,zynqmp-power";
+			interrupts = <0 35 4>;
+		};
+	};
+};

Documentation/devicetree/bindings/power/xlnx,zynqmp-genpd.txt

+-----------------------------------------------------------
+Device Tree Bindings for the Xilinx Zynq MPSoC PM domains
+-----------------------------------------------------------
+The binding for zynqmp-power-controller follow the common
+generic PM domain binding[1].
+
+[1] Documentation/devicetree/bindings/power/power_domain.txt
+
+== Zynq MPSoC Generic PM Domain Node ==
+
+Required property:
+ - Below property should be in zynqmp-firmware node.
+ - #power-domain-cells:	Number of cells in a PM domain specifier. Must be 1.
+
+Power domain ID indexes are mentioned in
+include/dt-bindings/power/xlnx-zynqmp-power.h.
+
+-------
+Example
+-------
+
+firmware {
+	zynqmp_firmware: zynqmp-firmware {
+		...
+		#power-domain-cells = <1>;
+		...
+	};
+};
+
+sata {
+	...
+	power-domains = <&zynqmp_firmware 28>;
+	...
+};

Documentation/devicetree/bindings/reset/brcm,brcmstb-reset.txt

+Broadcom STB SW_INIT-style reset controller
+===========================================
+
+Broadcom STB SoCs have a SW_INIT-style reset controller with separate
+SET/CLEAR/STATUS registers and possibly multiple banks, each of 32 bit
+reset lines.
+
+Please also refer to reset.txt in this directory for common reset
+controller binding usage.
+
+Required properties:
+- compatible: should be brcm,brcmstb-reset
+- reg: register base and length
+- #reset-cells: must be set to 1
+
+Example:
+
+	reset: reset-controller@8404318 {
+		compatible = "brcm,brcmstb-reset";
+		reg = <0x8404318 0x30>;
+		#reset-cells = <1>;
+	};
+
+	&ethernet_switch {
+		resets = <&reset>;
+		reset-names = "switch";
+	};

Documentation/devicetree/bindings/reset/fsl,imx7-src.txt

@@ -5,7 +5,9 @@ Please also refer to reset.txt in this directory for common reset
 controller binding usage.
 
 Required properties:
-- compatible: Should be "fsl,imx7d-src", "syscon"
+- compatible:
+	- For i.MX7 SoCs should be "fsl,imx7d-src", "syscon"
+	- For i.MX8MQ SoCs should be "fsl,imx8mq-src", "syscon"
 - reg: should be register base and length as documented in the
   datasheet
 - interrupts: Should contain SRC interrupt
@@ -44,4 +46,5 @@ Example:
 
 
 For list of all valid reset indicies see
-<dt-bindings/reset/imx7-reset.h>
+<dt-bindings/reset/imx7-reset.h> for i.MX7 and
+<dt-bindings/reset/imx8mq-reset.h> for i.MX8MQ

Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt

+--------------------------------------------------------------------------
+ =  Zynq UltraScale+ MPSoC reset driver binding =
+--------------------------------------------------------------------------
+The Zynq UltraScale+ MPSoC has several different resets.
+
+See Chapter 36 of the Zynq UltraScale+ MPSoC TRM (UG) for more information
+about zynqmp resets.
+
+Please also refer to reset.txt in this directory for common reset
+controller binding usage.
+
+Required Properties:
+- compatible:	"xlnx,zynqmp-reset"
+- #reset-cells:	Specifies the number of cells needed to encode reset
+		line, should be 1
+
+-------
+Example
+-------
+
+firmware {
+	zynqmp_firmware: zynqmp-firmware {
+		compatible = "xlnx,zynqmp-firmware";
+		method = "smc";
+
+		zynqmp_reset: reset-controller {
+			compatible = "xlnx,zynqmp-reset";
+			#reset-cells = <1>;
+		};
+	};
+};
+
+Specifying reset lines connected to IP modules
+==============================================
+
+Device nodes that need access to reset lines should
+specify them as a reset phandle in their corresponding node as
+specified in reset.txt.
+
+For list of all valid reset indicies see
+<dt-bindings/reset/xlnx-zynqmp-resets.h>
+
+Example:
+
+serdes: zynqmp_phy@fd400000 {
+	...
+
+	resets = <&zynqmp_reset ZYNQMP_RESET_SATA>;
+	reset-names = "sata_rst";
+
+	...
+};

Documentation/devicetree/bindings/soc/amlogic/clk-measure.txt

@@ -9,6 +9,8 @@ Required properties:
 			"amlogic,meson-gx-clk-measure" for GX SoCs
 			"amlogic,meson8-clk-measure" for Meson8 SoCs
 			"amlogic,meson8b-clk-measure" for Meson8b SoCs
+			"amlogic,meson-axg-clk-measure" for AXG SoCs
+			"amlogic,meson-g12a-clk-measure" for G12a SoCs
 - reg: base address and size of the Clock Measurer register space.
 
 Example:

Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt

+BCM2835 PM (Power domains, watchdog)
+
+The PM block controls power domains and some reset lines, and includes
+a watchdog timer.  This binding supersedes the brcm,bcm2835-pm-wdt
+binding which covered some of PM's register range and functionality.
+
+Required properties:
+
+- compatible:		Should be "brcm,bcm2835-pm"
+- reg:			Specifies base physical address and size of the two
+			  register ranges ("PM" and "ASYNC_BRIDGE" in that
+			  order)
+- clocks:		a) v3d: The V3D clock from CPRMAN
+			b) peri_image: The PERI_IMAGE clock from CPRMAN
+			c) h264: The H264 clock from CPRMAN
+			d) isp: The ISP clock from CPRMAN
+- #reset-cells: 	Should be 1.  This property follows the reset controller
+			  bindings[1].
+- #power-domain-cells:	Should be 1.  This property follows the power domain
+			  bindings[2].
+
+Optional properties:
+
+- timeout-sec:		Contains the watchdog timeout in seconds
+- system-power-controller: Whether the watchdog is controlling the
+    system power.  This node follows the power controller bindings[3].
+
+[1] Documentation/devicetree/bindings/reset/reset.txt
+[2] Documentation/devicetree/bindings/power/power_domain.txt
+[3] Documentation/devicetree/bindings/power/power-controller.txt
+
+Example:
+
+pm {
+	compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
+	#power-domain-cells = <1>;
+	#reset-cells = <1>;
+	reg = <0x7e100000 0x114>,
+	      <0x7e00a000 0x24>;
+	clocks = <&clocks BCM2835_CLOCK_V3D>,
+		 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
+		 <&clocks BCM2835_CLOCK_H264>,
+		 <&clocks BCM2835_CLOCK_ISP>;
+	clock-names = "v3d", "peri_image", "h264", "isp";
+	system-power-controller;
+};

Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt

@@ -23,6 +23,7 @@ resources.
 		    "qcom,rpm-msm8916"
 		    "qcom,rpm-msm8974"
 		    "qcom,rpm-msm8998"
+		    "qcom,rpm-sdm660"
 		    "qcom,rpm-qcs404"
 
 - qcom,smd-channels:

MAINTAINERS

@@ -1940,19 +1940,37 @@ M:	David Brown <david.brown@linaro.org>
 L:	linux-arm-msm@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/soc/qcom/
+F:	Documentation/devicetree/bindings/*/qcom*
 F:	arch/arm/boot/dts/qcom-*.dts
 F:	arch/arm/boot/dts/qcom-*.dtsi
 F:	arch/arm/mach-qcom/
-F:	arch/arm64/boot/dts/qcom/*
+F:	arch/arm64/boot/dts/qcom/
+F:	drivers/*/qcom/
+F:	drivers/*/qcom*
+F:	drivers/*/*/qcom/
+F:	drivers/*/*/qcom*
+F:	drivers/*/pm8???-*
+F:	drivers/bluetooth/btqcomsmd.c
+F:	drivers/clocksource/timer-qcom.c
+F:	drivers/extcon/extcon-qcom*
+F:	drivers/iommu/msm*
 F:	drivers/i2c/busses/i2c-qup.c
-F:	drivers/clk/qcom/
-F:	drivers/dma/qcom/
-F:	drivers/soc/qcom/
+F:	drivers/i2c/busses/i2c-qcom-geni.c
+F:	drivers/mfd/ssbi.c
+F:	drivers/mmc/host/mmci_qcom*
+F:	drivers/mmc/host/sdhci_msm.c
+F:	drivers/pci/controller/dwc/pcie-qcom.c
+F:	drivers/phy/qualcomm/
+F:	drivers/power/*/msm*
+F:	drivers/reset/reset-qcom-*
+F:	drivers/scsi/ufs/ufs-qcom.*
 F:	drivers/spi/spi-qup.c
+F:	drivers/spi/spi-geni-qcom.c
+F:	drivers/spi/spi-qcom-qspi.c
 F:	drivers/tty/serial/msm_serial.c
-F:	drivers/*/pm8???-*
-F:	drivers/mfd/ssbi.c
-F:	drivers/firmware/qcom_scm*
+F:	drivers/usb/dwc3/dwc3-qcom.c
+F:	include/dt-bindings/*/qcom*
+F:	include/linux/*/qcom*
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux.git
 
 ARM/RADISYS ENP2611 MACHINE SUPPORT
@@ -11314,6 +11332,11 @@ M:	Jens Wiklander <jens.wiklander@linaro.org>
 S:	Maintained
 F:	drivers/tee/optee/
 
+OP-TEE RANDOM NUMBER GENERATOR (RNG) DRIVER
+M:	Sumit Garg <sumit.garg@linaro.org>
+S:	Maintained
+F:	drivers/char/hw_random/optee-rng.c
+
 OPA-VNIC DRIVER
 M:	Dennis Dalessandro <dennis.dalessandro@intel.com>
 M:	Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
@@ -13017,6 +13040,7 @@ F:	drivers/reset/
 F:	Documentation/devicetree/bindings/reset/
 F:	include/dt-bindings/reset/
 F:	include/linux/reset.h
+F:	include/linux/reset/
 F:	include/linux/reset-controller.h
 
 RESTARTABLE SEQUENCES SUPPORT

arch/arm/boot/dts/bcm2835-rpi.dtsi

@@ -85,10 +85,6 @@
 	power-domains = <&power RPI_POWER_DOMAIN_USB>;
 };
 
-&v3d {
-	power-domains = <&power RPI_POWER_DOMAIN_V3D>;
-};
-
 &hdmi {
 	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 	status = "okay";

arch/arm/boot/dts/bcm283x.dtsi

@@ -3,6 +3,7 @@
 #include <dt-bindings/clock/bcm2835-aux.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/soc/bcm2835-pm.h>
 
 /* firmware-provided startup stubs live here, where the secondary CPUs are
  * spinning.
@@ -120,9 +121,18 @@
 			#interrupt-cells = <2>;
 		};
 
-		watchdog@7e100000 {
-			compatible = "brcm,bcm2835-pm-wdt";
-			reg = <0x7e100000 0x28>;
+		pm: watchdog@7e100000 {
+			compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
+			#power-domain-cells = <1>;
+			#reset-cells = <1>;
+			reg = <0x7e100000 0x114>,
+			      <0x7e00a000 0x24>;
+			clocks = <&clocks BCM2835_CLOCK_V3D>,
+				 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
+				 <&clocks BCM2835_CLOCK_H264>,
+				 <&clocks BCM2835_CLOCK_ISP>;
+			clock-names = "v3d", "peri_image", "h264", "isp";
+			system-power-controller;
 		};
 
 		clocks: cprman@7e101000 {
@@ -629,6 +639,7 @@
 			compatible = "brcm,bcm2835-v3d";
 			reg = <0x7ec00000 0x1000>;
 			interrupts = <1 10>;
+			power-domains = <&pm BCM2835_POWER_DOMAIN_GRAFX_V3D>;
 		};
 
 		vc4: gpu {

arch/arm/mach-bcm/Kconfig

@@ -167,6 +167,7 @@ config ARCH_BCM2835
 	select BCM2835_TIMER
 	select PINCTRL
 	select PINCTRL_BCM2835
+	select MFD_CORE
 	help
 	  This enables support for the Broadcom BCM2835 and BCM2836 SoCs.
 	  This SoC is used in the Raspberry Pi and Roku 2 devices.

arch/arm/mach-socfpga/socfpga.c

@@ -19,6 +19,7 @@
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/reboot.h>
+#include <linux/reset/socfpga.h>
 
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
@@ -32,8 +33,6 @@ void __iomem *rst_manager_base_addr;
 void __iomem *sdr_ctl_base_addr;
 unsigned long socfpga_cpu1start_addr;
 
-extern void __init socfpga_reset_init(void);
-
 static void __init socfpga_sysmgr_init(void)
 {
 	struct device_node *np;

arch/arm/mach-sunxi/sunxi.c

@@ -14,6 +14,7 @@
 #include <linux/clocksource.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/reset/sunxi.h>
 
 #include <asm/mach/arch.h>
 #include <asm/secure_cntvoff.h>
@@ -37,7 +38,6 @@ static const char * const sun6i_board_dt_compat[] = {
 	NULL,
 };
 
-extern void __init sun6i_reset_init(void);
 static void __init sun6i_timer_init(void)
 {
 	of_clk_init(NULL);

drivers/bus/hisi_lpc.c

@@ -522,10 +522,9 @@ static int hisi_lpc_acpi_probe(struct device *hostdev)
 
 		if (!found) {
 			dev_warn(hostdev,
-				 "could not find cell for child device (%s)\n",
+				 "could not find cell for child device (%s), discarding\n",
 				 hid);
-			ret = -ENODEV;
-			goto fail;
+			continue;
 		}
 
 		pdev = platform_device_alloc(cell->name, PLATFORM_DEVID_AUTO);

drivers/bus/imx-weim.c

@@ -46,6 +46,17 @@ static const struct imx_weim_devtype imx51_weim_devtype = {
 };
 
 #define MAX_CS_REGS_COUNT	6
+#define MAX_CS_COUNT		6
+#define OF_REG_SIZE		3
+
+struct cs_timing {
+	bool is_applied;
+	u32 regs[MAX_CS_REGS_COUNT];
+};
+
+struct cs_timing_state {
+	struct cs_timing cs[MAX_CS_COUNT];
+};
 
 static const struct of_device_id weim_id_table[] = {
 	/* i.MX1/21 */
@@ -111,21 +122,19 @@ static int __init imx_weim_gpr_setup(struct platform_device *pdev)
 }
 
 /* Parse and set the timing for this device. */
-static int __init weim_timing_setup(struct device_node *np, void __iomem *base,
-				    const struct imx_weim_devtype *devtype)
+static int __init weim_timing_setup(struct device *dev,
+				    struct device_node *np, void __iomem *base,
+				    const struct imx_weim_devtype *devtype,
+				    struct cs_timing_state *ts)
 {
 	u32 cs_idx, value[MAX_CS_REGS_COUNT];
 	int i, ret;
+	int reg_idx, num_regs;
+	struct cs_timing *cst;
 
 	if (WARN_ON(devtype->cs_regs_count > MAX_CS_REGS_COUNT))
 		return -EINVAL;
-
-	/* get the CS index from this child node's "reg" property. */
-	ret = of_property_read_u32(np, "reg", &cs_idx);
-	if (ret)
-		return ret;
-
-	if (cs_idx >= devtype->cs_count)
+	if (WARN_ON(devtype->cs_count > MAX_CS_COUNT))
 		return -EINVAL;
 
 	ret = of_property_read_u32_array(np, "fsl,weim-cs-timing",
@@ -133,9 +142,43 @@ static int __init weim_timing_setup(struct device_node *np, void __iomem *base,
 	if (ret)
 		return ret;
 
-	/* set the timing for WEIM */
-	for (i = 0; i < devtype->cs_regs_count; i++)
-		writel(value[i], base + cs_idx * devtype->cs_stride + i * 4);
+	/*
+	 * the child node's "reg" property may contain multiple address ranges,
+	 * extract the chip select for each.
+	 */
+	num_regs = of_property_count_elems_of_size(np, "reg", OF_REG_SIZE);
+	if (num_regs < 0)
+		return num_regs;
+	if (!num_regs)
+		return -EINVAL;
+	for (reg_idx = 0; reg_idx < num_regs; reg_idx++) {
+		/* get the CS index from this child node's "reg" property. */
+		ret = of_property_read_u32_index(np, "reg",
+					reg_idx * OF_REG_SIZE, &cs_idx);
+		if (ret)
+			break;
+
+		if (cs_idx >= devtype->cs_count)
+			return -EINVAL;
+
+		/* prevent re-configuring a CS that's already been configured */
+		cst = &ts->cs[cs_idx];
+		if (cst->is_applied && memcmp(value, cst->regs,
+					devtype->cs_regs_count * sizeof(u32))) {
+			dev_err(dev, "fsl,weim-cs-timing conflict on %pOF", np);
+			return -EINVAL;
+		}
+
+		/* set the timing for WEIM */
+		for (i = 0; i < devtype->cs_regs_count; i++)
+			writel(value[i],
+				base + cs_idx * devtype->cs_stride + i * 4);
+		if (!cst->is_applied) {
+			cst->is_applied = true;
+			memcpy(cst->regs, value,
+				devtype->cs_regs_count * sizeof(u32));
+		}
+	}
 
 	return 0;
 }
@@ -148,6 +191,7 @@ static int __init weim_parse_dt(struct platform_device *pdev,
 	const struct imx_weim_devtype *devtype = of_id->data;
 	struct device_node *child;
 	int ret, have_child = 0;
+	struct cs_timing_state ts = {};
 
 	if (devtype == &imx50_weim_devtype) {
 		ret = imx_weim_gpr_setup(pdev);
@@ -156,7 +200,7 @@ static int __init weim_parse_dt(struct platform_device *pdev,
 	}
 
 	for_each_available_child_of_node(pdev->dev.of_node, child) {
-		ret = weim_timing_setup(child, base, devtype);
+		ret = weim_timing_setup(&pdev->dev, child, base, devtype, &ts);
 		if (ret)
 			dev_warn(&pdev->dev, "%pOF set timing failed.\n",
 				child);

drivers/char/hw_random/Kconfig

@@ -424,6 +424,21 @@ config HW_RANDOM_EXYNOS
 	  will be called exynos-trng.
 
 	  If unsure, say Y.
+
+config HW_RANDOM_OPTEE
+	tristate "OP-TEE based Random Number Generator support"
+	depends on OPTEE
+	default HW_RANDOM
+	help
+	  This  driver provides support for OP-TEE based Random Number
+	  Generator on ARM SoCs where hardware entropy sources are not
+	  accessible to normal world (Linux).
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called optee-rng.
+
+	  If unsure, say Y.
+
 endif # HW_RANDOM
 
 config UML_RANDOM

drivers/char/hw_random/Makefile

@@ -38,3 +38,4 @@ obj-$(CONFIG_HW_RANDOM_CAVIUM) += cavium-rng.o cavium-rng-vf.o
 obj-$(CONFIG_HW_RANDOM_MTK)	+= mtk-rng.o
 obj-$(CONFIG_HW_RANDOM_S390) += s390-trng.o
 obj-$(CONFIG_HW_RANDOM_KEYSTONE) += ks-sa-rng.o
+obj-$(CONFIG_HW_RANDOM_OPTEE) += optee-rng.o

drivers/char/hw_random/optee-rng.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018-2019 Linaro Ltd.
+ */
+
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/hw_random.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/tee_drv.h>
+#include <linux/uuid.h>
+
+#define DRIVER_NAME "optee-rng"
+
+#define TEE_ERROR_HEALTH_TEST_FAIL	0x00000001
+
+/*
+ * TA_CMD_GET_ENTROPY - Get Entropy from RNG
+ *
+ * param[0] (inout memref) - Entropy buffer memory reference
+ * param[1] unused
+ * param[2] unused
+ * param[3] unused
+ *
+ * Result:
+ * TEE_SUCCESS - Invoke command success
+ * TEE_ERROR_BAD_PARAMETERS - Incorrect input param
+ * TEE_ERROR_NOT_SUPPORTED - Requested entropy size greater than size of pool
+ * TEE_ERROR_HEALTH_TEST_FAIL - Continuous health testing failed
+ */
+#define TA_CMD_GET_ENTROPY		0x0
+
+/*
+ * TA_CMD_GET_RNG_INFO - Get RNG information
+ *
+ * param[0] (out value) - value.a: RNG data-rate in bytes per second
+ *                        value.b: Quality/Entropy per 1024 bit of data
+ * param[1] unused
+ * param[2] unused
+ * param[3] unused
+ *
+ * Result:
+ * TEE_SUCCESS - Invoke command success
+ * TEE_ERROR_BAD_PARAMETERS - Incorrect input param
+ */
+#define TA_CMD_GET_RNG_INFO		0x1
+
+#define MAX_ENTROPY_REQ_SZ		(4 * 1024)
+
+/**
+ * struct optee_rng_private - OP-TEE Random Number Generator private data
+ * @dev:		OP-TEE based RNG device.
+ * @ctx:		OP-TEE context handler.
+ * @session_id:		RNG TA session identifier.
+ * @data_rate:		RNG data rate.
+ * @entropy_shm_pool:	Memory pool shared with RNG device.
+ * @optee_rng:		OP-TEE RNG driver structure.
+ */
+struct optee_rng_private {
+	struct device *dev;
+	struct tee_context *ctx;
+	u32 session_id;
+	u32 data_rate;
+	struct tee_shm *entropy_shm_pool;
+	struct hwrng optee_rng;
+};
+
+#define to_optee_rng_private(r) \
+		container_of(r, struct optee_rng_private, optee_rng)
+
+static size_t get_optee_rng_data(struct optee_rng_private *pvt_data,
+				 void *buf, size_t req_size)
+{
+	int ret = 0;
+	u8 *rng_data = NULL;
+	size_t rng_size = 0;
+	struct tee_ioctl_invoke_arg inv_arg;
+	struct tee_param param[4];
+
+	memset(&inv_arg, 0, sizeof(inv_arg));
+	memset(&param, 0, sizeof(param));
+
+	/* Invoke TA_CMD_GET_ENTROPY function of Trusted App */
+	inv_arg.func = TA_CMD_GET_ENTROPY;
+	inv_arg.session = pvt_data->session_id;
+	inv_arg.num_params = 4;
+
+	/* Fill invoke cmd params */
+	param[0].attr = TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT;
+	param[0].u.memref.shm = pvt_data->entropy_shm_pool;
+	param[0].u.memref.size = req_size;
+	param[0].u.memref.shm_offs = 0;
+
+	ret = tee_client_invoke_func(pvt_data->ctx, &inv_arg, param);
+	if ((ret < 0) || (inv_arg.ret != 0)) {
+		dev_err(pvt_data->dev, "TA_CMD_GET_ENTROPY invoke err: %x\n",
+			inv_arg.ret);
+		return 0;
+	}
+
+	rng_data = tee_shm_get_va(pvt_data->entropy_shm_pool, 0);
+	if (IS_ERR(rng_data)) {
+		dev_err(pvt_data->dev, "tee_shm_get_va failed\n");
+		return 0;
+	}
+
+	rng_size = param[0].u.memref.size;
+	memcpy(buf, rng_data, rng_size);
+
+	return rng_size;
+}
+
+static int optee_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
+{
+	struct optee_rng_private *pvt_data = to_optee_rng_private(rng);
+	size_t read = 0, rng_size = 0;
+	int timeout = 1;
+	u8 *data = buf;
+
+	if (max > MAX_ENTROPY_REQ_SZ)
+		max = MAX_ENTROPY_REQ_SZ;
+
+	while (read == 0) {
+		rng_size = get_optee_rng_data(pvt_data, data, (max - read));
+
+		data += rng_size;
+		read += rng_size;
+
+		if (wait) {
+			if (timeout-- == 0)
+				return read;
+			msleep((1000 * (max - read)) / pvt_data->data_rate);
+		} else {
+			return read;
+		}
+	}
+
+	return read;
+}
+
+static int optee_rng_init(struct hwrng *rng)
+{
+	struct optee_rng_private *pvt_data = to_optee_rng_private(rng);
+	struct tee_shm *entropy_shm_pool = NULL;
+
+	entropy_shm_pool = tee_shm_alloc(pvt_data->ctx, MAX_ENTROPY_REQ_SZ,
+					 TEE_SHM_MAPPED | TEE_SHM_DMA_BUF);
+	if (IS_ERR(entropy_shm_pool)) {
+		dev_err(pvt_data->dev, "tee_shm_alloc failed\n");
+		return PTR_ERR(entropy_shm_pool);
+	}
+
+	pvt_data->entropy_shm_pool = entropy_shm_pool;
+
+	return 0;
+}
+
+static void optee_rng_cleanup(struct hwrng *rng)
+{
+	struct optee_rng_private *pvt_data = to_optee_rng_private(rng);
+
+	tee_shm_free(pvt_data->entropy_shm_pool);
+}
+
+static struct optee_rng_private pvt_data = {
+	.optee_rng = {
+		.name		= DRIVER_NAME,
+		.init		= optee_rng_init,
+		.cleanup	= optee_rng_cleanup,
+		.read		= optee_rng_read,
+	}
+};
+
+static int get_optee_rng_info(struct device *dev)
+{
+	int ret = 0;
+	struct tee_ioctl_invoke_arg inv_arg;
+	struct tee_param param[4];
+
+	memset(&inv_arg, 0, sizeof(inv_arg));
+	memset(&param, 0, sizeof(param));
+
+	/* Invoke TA_CMD_GET_RNG_INFO function of Trusted App */
+	inv_arg.func = TA_CMD_GET_RNG_INFO;
+	inv_arg.session = pvt_data.session_id;
+	inv_arg.num_params = 4;
+
+	/* Fill invoke cmd params */
+	param[0].attr = TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT;
+
+	ret = tee_client_invoke_func(pvt_data.ctx, &inv_arg, param);
+	if ((ret < 0) || (inv_arg.ret != 0)) {
+		dev_err(dev, "TA_CMD_GET_RNG_INFO invoke err: %x\n",
+			inv_arg.ret);
+		return -EINVAL;
+	}
+
+	pvt_data.data_rate = param[0].u.value.a;
+	pvt_data.optee_rng.quality = param[0].u.value.b;
+
+	return 0;
+}
+
+static int optee_ctx_match(struct tee_ioctl_version_data *ver, const void *data)
+{
+	if (ver->impl_id == TEE_IMPL_ID_OPTEE)
+		return 1;
+	else
+		return 0;
+}
+
+static int optee_rng_probe(struct device *dev)
+{
+	struct tee_client_device *rng_device = to_tee_client_device(dev);
+	int ret = 0, err = -ENODEV;
+	struct tee_ioctl_open_session_arg sess_arg;
+
+	memset(&sess_arg, 0, sizeof(sess_arg));
+
+	/* Open context with TEE driver */
+	pvt_data.ctx = tee_client_open_context(NULL, optee_ctx_match, NULL,
+					       NULL);
+	if (IS_ERR(pvt_data.ctx))
+		return -ENODEV;
+
+	/* Open session with hwrng Trusted App */
+	memcpy(sess_arg.uuid, rng_device->id.uuid.b, TEE_IOCTL_UUID_LEN);
+	sess_arg.clnt_login = TEE_IOCTL_LOGIN_PUBLIC;
+	sess_arg.num_params = 0;
+
+	ret = tee_client_open_session(pvt_data.ctx, &sess_arg, NULL);
+	if ((ret < 0) || (sess_arg.ret != 0)) {
+		dev_err(dev, "tee_client_open_session failed, err: %x\n",
+			sess_arg.ret);
+		err = -EINVAL;
+		goto out_ctx;
+	}
+	pvt_data.session_id = sess_arg.session;
+
+	err = get_optee_rng_info(dev);
+	if (err)
+		goto out_sess;
+
+	err = hwrng_register(&pvt_data.optee_rng);
+	if (err) {
+		dev_err(dev, "hwrng registration failed (%d)\n", err);
+		goto out_sess;
+	}
+
+	pvt_data.dev = dev;
+
+	return 0;
+
+out_sess:
+	tee_client_close_session(pvt_data.ctx, pvt_data.session_id);
+out_ctx:
+	tee_client_close_context(pvt_data.ctx);
+
+	return err;
+}
+
+static int optee_rng_remove(struct device *dev)
+{
+	hwrng_unregister(&pvt_data.optee_rng);
+	tee_client_close_session(pvt_data.ctx, pvt_data.session_id);
+	tee_client_close_context(pvt_data.ctx);
+
+	return 0;
+}
+
+static const struct tee_client_device_id optee_rng_id_table[] = {
+	{UUID_INIT(0xab7a617c, 0xb8e7, 0x4d8f,
+		   0x83, 0x01, 0xd0, 0x9b, 0x61, 0x03, 0x6b, 0x64)},
+	{}
+};
+
+MODULE_DEVICE_TABLE(tee, optee_rng_id_table);
+
+static struct tee_client_driver optee_rng_driver = {
+	.id_table	= optee_rng_id_table,
+	.driver		= {
+		.name		= DRIVER_NAME,
+		.bus		= &tee_bus_type,
+		.probe		= optee_rng_probe,
+		.remove		= optee_rng_remove,
+	},
+};
+
+static int __init optee_rng_mod_init(void)
+{
+	return driver_register(&optee_rng_driver.driver);
+}
+
+static void __exit optee_rng_mod_exit(void)
+{
+	driver_unregister(&optee_rng_driver.driver);
+}
+
+module_init(optee_rng_mod_init);
+module_exit(optee_rng_mod_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Sumit Garg <sumit.garg@linaro.org>");
+MODULE_DESCRIPTION("OP-TEE based random number generator driver");

drivers/clk/tegra/Kconfig

@@ -5,3 +5,8 @@ config TEGRA_CLK_EMC
 config CLK_TEGRA_BPMP
 	def_bool y
 	depends on TEGRA_BPMP
+
+config TEGRA_CLK_DFLL
+	depends on ARCH_TEGRA_124_SOC || ARCH_TEGRA_210_SOC
+	select PM_OPP
+	def_bool y

drivers/clk/tegra/Makefile

@@ -20,7 +20,7 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += clk-tegra20.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)         += clk-tegra30.o
 obj-$(CONFIG_ARCH_TEGRA_114_SOC)	+= clk-tegra114.o
 obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= clk-tegra124.o
-obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= clk-tegra124-dfll-fcpu.o
+obj-$(CONFIG_TEGRA_CLK_DFLL)		+= clk-tegra124-dfll-fcpu.o
 obj-$(CONFIG_ARCH_TEGRA_132_SOC)	+= clk-tegra124.o
 obj-y					+= cvb.o
 obj-$(CONFIG_ARCH_TEGRA_210_SOC)	+= clk-tegra210.o

drivers/clk/tegra/clk-dfll.c

 /*
  * clk-dfll.c - Tegra DFLL clock source common code
  *
- * Copyright (C) 2012-2014 NVIDIA Corporation. All rights reserved.
+ * Copyright (C) 2012-2019 NVIDIA Corporation. All rights reserved.
  *
  * Aleksandr Frid <afrid@nvidia.com>
  * Paul Walmsley <pwalmsley@nvidia.com>
@@ -47,6 +47,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/pm_opp.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
@@ -243,6 +244,12 @@ enum dfll_tune_range {
 	DFLL_TUNE_LOW = 1,
 };
 
+
+enum tegra_dfll_pmu_if {
+	TEGRA_DFLL_PMU_I2C = 0,
+	TEGRA_DFLL_PMU_PWM = 1,
+};
+
 /**
  * struct dfll_rate_req - target DFLL rate request data
  * @rate: target frequency, after the postscaling
@@ -300,10 +307,19 @@ struct tegra_dfll {
 	u32				i2c_reg;
 	u32				i2c_slave_addr;
 
-	/* i2c_lut array entries are regulator framework selectors */
-	unsigned			i2c_lut[MAX_DFLL_VOLTAGES];
-	int				i2c_lut_size;
-	u8				lut_min, lut_max, lut_safe;
+	/* lut array entries are regulator framework selectors or PWM values*/
+	unsigned			lut[MAX_DFLL_VOLTAGES];
+	unsigned long			lut_uv[MAX_DFLL_VOLTAGES];
+	int				lut_size;
+	u8				lut_bottom, lut_min, lut_max, lut_safe;
+
+	/* PWM interface */
+	enum tegra_dfll_pmu_if		pmu_if;
+	unsigned long			pwm_rate;
+	struct pinctrl			*pwm_pin;
+	struct pinctrl_state		*pwm_enable_state;
+	struct pinctrl_state		*pwm_disable_state;
+	u32				reg_init_uV;
 };
 
 #define clk_hw_to_dfll(_hw) container_of(_hw, struct tegra_dfll, dfll_clk_hw)
@@ -489,6 +505,34 @@ static void dfll_set_mode(struct tegra_dfll *td,
 	dfll_wmb(td);
 }
 
+/*
+ * DVCO rate control
+ */
+
+static unsigned long get_dvco_rate_below(struct tegra_dfll *td, u8 out_min)
+{
+	struct dev_pm_opp *opp;
+	unsigned long rate, prev_rate;
+	unsigned long uv, min_uv;
+
+	min_uv = td->lut_uv[out_min];
+	for (rate = 0, prev_rate = 0; ; rate++) {
+		opp = dev_pm_opp_find_freq_ceil(td->soc->dev, &rate);
+		if (IS_ERR(opp))
+			break;
+
+		uv = dev_pm_opp_get_voltage(opp);
+		dev_pm_opp_put(opp);
+
+		if (uv && uv > min_uv)
+			return prev_rate;
+
+		prev_rate = rate;
+	}
+
+	return prev_rate;
+}
+
 /*
  * DFLL-to-I2C controller interface
  */
@@ -518,6 +562,118 @@ static int dfll_i2c_set_output_enabled(struct tegra_dfll *td, bool enable)
 	return 0;
 }
 
+
+/*
+ * DFLL-to-PWM controller interface
+ */
+
+/**
+ * dfll_pwm_set_output_enabled - enable/disable PWM voltage requests
+ * @td: DFLL instance
+ * @enable: whether to enable or disable the PWM voltage requests
+ *
+ * Set the master enable control for PWM control value updates. If disabled,
+ * then the PWM signal is not driven. Also configure the PWM output pad
+ * to the appropriate state.
+ */
+static int dfll_pwm_set_output_enabled(struct tegra_dfll *td, bool enable)
+{
+	int ret;
+	u32 val, div;
+
+	if (enable) {
+		ret = pinctrl_select_state(td->pwm_pin, td->pwm_enable_state);
+		if (ret < 0) {
+			dev_err(td->dev, "setting enable state failed\n");
+			return -EINVAL;
+		}
+		val = dfll_readl(td, DFLL_OUTPUT_CFG);
+		val &= ~DFLL_OUTPUT_CFG_PWM_DIV_MASK;
+		div = DIV_ROUND_UP(td->ref_rate, td->pwm_rate);
+		val |= (div << DFLL_OUTPUT_CFG_PWM_DIV_SHIFT)
+				& DFLL_OUTPUT_CFG_PWM_DIV_MASK;
+		dfll_writel(td, val, DFLL_OUTPUT_CFG);
+		dfll_wmb(td);
+
+		val |= DFLL_OUTPUT_CFG_PWM_ENABLE;
+		dfll_writel(td, val, DFLL_OUTPUT_CFG);
+		dfll_wmb(td);
+	} else {
+		ret = pinctrl_select_state(td->pwm_pin, td->pwm_disable_state);
+		if (ret < 0)
+			dev_warn(td->dev, "setting disable state failed\n");
+
+		val = dfll_readl(td, DFLL_OUTPUT_CFG);
+		val &= ~DFLL_OUTPUT_CFG_PWM_ENABLE;
+		dfll_writel(td, val, DFLL_OUTPUT_CFG);
+		dfll_wmb(td);
+	}
+
+	return 0;
+}
+
+/**
+ * dfll_set_force_output_value - set fixed value for force output
+ * @td: DFLL instance
+ * @out_val: value to force output
+ *
+ * Set the fixed value for force output, DFLL will output this value when
+ * force output is enabled.
+ */
+static u32 dfll_set_force_output_value(struct tegra_dfll *td, u8 out_val)
+{
+	u32 val = dfll_readl(td, DFLL_OUTPUT_FORCE);
+
+	val = (val & DFLL_OUTPUT_FORCE_ENABLE) | (out_val & OUT_MASK);
+	dfll_writel(td, val, DFLL_OUTPUT_FORCE);
+	dfll_wmb(td);
+
+	return dfll_readl(td, DFLL_OUTPUT_FORCE);
+}
+
+/**
+ * dfll_set_force_output_enabled - enable/disable force output
+ * @td: DFLL instance
+ * @enable: whether to enable or disable the force output
+ *
+ * Set the enable control for fouce output with fixed value.
+ */
+static void dfll_set_force_output_enabled(struct tegra_dfll *td, bool enable)
+{
+	u32 val = dfll_readl(td, DFLL_OUTPUT_FORCE);
+
+	if (enable)
+		val |= DFLL_OUTPUT_FORCE_ENABLE;
+	else
+		val &= ~DFLL_OUTPUT_FORCE_ENABLE;
+
+	dfll_writel(td, val, DFLL_OUTPUT_FORCE);
+	dfll_wmb(td);
+}
+
+/**
+ * dfll_force_output - force output a fixed value
+ * @td: DFLL instance
+ * @out_sel: value to force output
+ *
+ * Set the fixed value for force output, DFLL will output this value.
+ */
+static int dfll_force_output(struct tegra_dfll *td, unsigned int out_sel)
+{
+	u32 val;
+
+	if (out_sel > OUT_MASK)
+		return -EINVAL;
+
+	val = dfll_set_force_output_value(td, out_sel);
+	if ((td->mode < DFLL_CLOSED_LOOP) &&
+	    !(val & DFLL_OUTPUT_FORCE_ENABLE)) {
+		dfll_set_force_output_enabled(td, true);
+	}
+
+	return 0;
+}
+
 /**
  * dfll_load_lut - load the voltage lookup table
  * @td: struct tegra_dfll *
@@ -539,7 +695,7 @@ static void dfll_load_i2c_lut(struct tegra_dfll *td)
 			lut_index = i;
 
 		val = regulator_list_hardware_vsel(td->vdd_reg,
-						     td->i2c_lut[lut_index]);
+						     td->lut[lut_index]);
 		__raw_writel(val, td->lut_base + i * 4);
 	}
 
@@ -594,24 +750,41 @@ static void dfll_init_out_if(struct tegra_dfll *td)
 {
 	u32 val;
 
-	td->lut_min = 0;
-	td->lut_max = td->i2c_lut_size - 1;
-	td->lut_safe = td->lut_min + 1;
+	td->lut_min = td->lut_bottom;
+	td->lut_max = td->lut_size - 1;
+	td->lut_safe = td->lut_min + (td->lut_min < td->lut_max ? 1 : 0);
+
+	/* clear DFLL_OUTPUT_CFG before setting new value */
+	dfll_writel(td, 0, DFLL_OUTPUT_CFG);
+	dfll_wmb(td);
 
-	dfll_i2c_writel(td, 0, DFLL_OUTPUT_CFG);
 	val = (td->lut_safe << DFLL_OUTPUT_CFG_SAFE_SHIFT) |
-		(td->lut_max << DFLL_OUTPUT_CFG_MAX_SHIFT) |
-		(td->lut_min << DFLL_OUTPUT_CFG_MIN_SHIFT);
-	dfll_i2c_writel(td, val, DFLL_OUTPUT_CFG);
-	dfll_i2c_wmb(td);
+	      (td->lut_max << DFLL_OUTPUT_CFG_MAX_SHIFT) |
+	      (td->lut_min << DFLL_OUTPUT_CFG_MIN_SHIFT);
+	dfll_writel(td, val, DFLL_OUTPUT_CFG);
+	dfll_wmb(td);
 
 	dfll_writel(td, 0, DFLL_OUTPUT_FORCE);
 	dfll_i2c_writel(td, 0, DFLL_INTR_EN);
 	dfll_i2c_writel(td, DFLL_INTR_MAX_MASK | DFLL_INTR_MIN_MASK,
 			DFLL_INTR_STS);
 
-	dfll_load_i2c_lut(td);
-	dfll_init_i2c_if(td);
+	if (td->pmu_if == TEGRA_DFLL_PMU_PWM) {
+		u32 vinit = td->reg_init_uV;
+		int vstep = td->soc->alignment.step_uv;
+		unsigned long vmin = td->lut_uv[0];
+
+		/* set initial voltage */
+		if ((vinit >= vmin) && vstep) {
+			unsigned int vsel;
+
+			vsel = DIV_ROUND_UP((vinit - vmin), vstep);
+			dfll_force_output(td, vsel);
+		}
+	} else {
+		dfll_load_i2c_lut(td);
+		dfll_init_i2c_if(td);
+	}
 }
 
 /*
@@ -631,17 +804,17 @@ static void dfll_init_out_if(struct tegra_dfll *td)
 static int find_lut_index_for_rate(struct tegra_dfll *td, unsigned long rate)
 {
 	struct dev_pm_opp *opp;
-	int i, uv;
+	int i, align_step;
 
 	opp = dev_pm_opp_find_freq_ceil(td->soc->dev, &rate);
 	if (IS_ERR(opp))
 		return PTR_ERR(opp);
 
-	uv = dev_pm_opp_get_voltage(opp);
+	align_step = dev_pm_opp_get_voltage(opp) / td->soc->alignment.step_uv;
 	dev_pm_opp_put(opp);
 
-	for (i = 0; i < td->i2c_lut_size; i++) {
-		if (regulator_list_voltage(td->vdd_reg, td->i2c_lut[i]) == uv)
+	for (i = td->lut_bottom; i < td->lut_size; i++) {
+		if ((td->lut_uv[i] / td->soc->alignment.step_uv) >= align_step)
 			return i;
 	}
 
@@ -863,9 +1036,14 @@ static int dfll_lock(struct tegra_dfll *td)
 			return -EINVAL;
 		}
 
-		dfll_i2c_set_output_enabled(td, true);
+		if (td->pmu_if == TEGRA_DFLL_PMU_PWM)
+			dfll_pwm_set_output_enabled(td, true);
+		else
+			dfll_i2c_set_output_enabled(td, true);
+
 		dfll_set_mode(td, DFLL_CLOSED_LOOP);
 		dfll_set_frequency_request(td, req);
+		dfll_set_force_output_enabled(td, false);
 		return 0;
 
 	default:
@@ -889,7 +1067,10 @@ static int dfll_unlock(struct tegra_dfll *td)
 	case DFLL_CLOSED_LOOP:
 		dfll_set_open_loop_config(td);
 		dfll_set_mode(td, DFLL_OPEN_LOOP);
-		dfll_i2c_set_output_enabled(td, false);
+		if (td->pmu_if == TEGRA_DFLL_PMU_PWM)
+			dfll_pwm_set_output_enabled(td, false);
+		else
+			dfll_i2c_set_output_enabled(td, false);
 		return 0;
 
 	case DFLL_OPEN_LOOP:
@@ -1171,15 +1352,17 @@ static int attr_registers_show(struct seq_file *s, void *data)
 		seq_printf(s, "[0x%02x] = 0x%08x\n", offs,
 			   dfll_i2c_readl(td, offs));
 
-	seq_puts(s, "\nINTEGRATED I2C CONTROLLER REGISTERS:\n");
-	offs = DFLL_I2C_CLK_DIVISOR;
-	seq_printf(s, "[0x%02x] = 0x%08x\n", offs,
-		   __raw_readl(td->i2c_controller_base + offs));
-
-	seq_puts(s, "\nLUT:\n");
-	for (offs = 0; offs <  4 * MAX_DFLL_VOLTAGES; offs += 4)
+	if (td->pmu_if == TEGRA_DFLL_PMU_I2C) {
+		seq_puts(s, "\nINTEGRATED I2C CONTROLLER REGISTERS:\n");
+		offs = DFLL_I2C_CLK_DIVISOR;
 		seq_printf(s, "[0x%02x] = 0x%08x\n", offs,
-			   __raw_readl(td->lut_base + offs));
+			   __raw_readl(td->i2c_controller_base + offs));
+
+		seq_puts(s, "\nLUT:\n");
+		for (offs = 0; offs <  4 * MAX_DFLL_VOLTAGES; offs += 4)
+			seq_printf(s, "[0x%02x] = 0x%08x\n", offs,
+				   __raw_readl(td->lut_base + offs));
+	}
 
 	return 0;
 }
@@ -1349,15 +1532,21 @@ static int dfll_init(struct tegra_dfll *td)
  */
 static int find_vdd_map_entry_exact(struct tegra_dfll *td, int uV)
 {
-	int i, n_voltages, reg_uV;
+	int i, n_voltages, reg_uV,reg_volt_id, align_step;
+
+	if (WARN_ON(td->pmu_if == TEGRA_DFLL_PMU_PWM))
+		return -EINVAL;
 
+	align_step = uV / td->soc->alignment.step_uv;
 	n_voltages = regulator_count_voltages(td->vdd_reg);
 	for (i = 0; i < n_voltages; i++) {
 		reg_uV = regulator_list_voltage(td->vdd_reg, i);
 		if (reg_uV < 0)
 			break;
 
-		if (uV == reg_uV)
+		reg_volt_id = reg_uV / td->soc->alignment.step_uv;
+
+		if (align_step == reg_volt_id)
 			return i;
 	}
 
@@ -1371,15 +1560,21 @@ static int find_vdd_map_entry_exact(struct tegra_dfll *td, int uV)
  * */
 static int find_vdd_map_entry_min(struct tegra_dfll *td, int uV)
 {
-	int i, n_voltages, reg_uV;
+	int i, n_voltages, reg_uV, reg_volt_id, align_step;
 
+	if (WARN_ON(td->pmu_if == TEGRA_DFLL_PMU_PWM))
+		return -EINVAL;
+
+	align_step = uV / td->soc->alignment.step_uv;
 	n_voltages = regulator_count_voltages(td->vdd_reg);
 	for (i = 0; i < n_voltages; i++) {
 		reg_uV = regulator_list_voltage(td->vdd_reg, i);
 		if (reg_uV < 0)
 			break;
 
-		if (uV <= reg_uV)
+		reg_volt_id = reg_uV / td->soc->alignment.step_uv;
+
+		if (align_step <= reg_volt_id)
 			return i;
 	}
 
@@ -1387,9 +1582,61 @@ static int find_vdd_map_entry_min(struct tegra_dfll *td, int uV)
 	return -EINVAL;
 }
 
+/*
+ * dfll_build_pwm_lut - build the PWM regulator lookup table
+ * @td: DFLL instance
+ * @v_max: Vmax from OPP table
+ *
+ * Look-up table in h/w is ignored when PWM is used as DFLL interface to PMIC.
+ * In this case closed loop output is controlling duty cycle directly. The s/w
+ * look-up that maps PWM duty cycle to voltage is still built by this function.
+ */
+static int dfll_build_pwm_lut(struct tegra_dfll *td, unsigned long v_max)
+{
+	int i;
+	unsigned long rate, reg_volt;
+	u8 lut_bottom = MAX_DFLL_VOLTAGES;
+	int v_min = td->soc->cvb->min_millivolts * 1000;
+
+	for (i = 0; i < MAX_DFLL_VOLTAGES; i++) {
+		reg_volt = td->lut_uv[i];
+
+		/* since opp voltage is exact mv */
+		reg_volt = (reg_volt / 1000) * 1000;
+		if (reg_volt > v_max)
+			break;
+
+		td->lut[i] = i;
+		if ((lut_bottom == MAX_DFLL_VOLTAGES) && (reg_volt >= v_min))
+			lut_bottom = i;
+	}
+
+	/* determine voltage boundaries */
+	td->lut_size = i;
+	if ((lut_bottom == MAX_DFLL_VOLTAGES) ||
+	    (lut_bottom + 1 >= td->lut_size)) {
+		dev_err(td->dev, "no voltage above DFLL minimum %d mV\n",
+			td->soc->cvb->min_millivolts);
+		return -EINVAL;
+	}
+	td->lut_bottom = lut_bottom;
+
+	/* determine rate boundaries */
+	rate = get_dvco_rate_below(td, td->lut_bottom);
+	if (!rate) {
+		dev_err(td->dev, "no opp below DFLL minimum voltage %d mV\n",
+			td->soc->cvb->min_millivolts);
+		return -EINVAL;
+	}
+	td->dvco_rate_min = rate;
+
+	return 0;
+}
+
 /**
  * dfll_build_i2c_lut - build the I2C voltage register lookup table
  * @td: DFLL instance
+ * @v_max: Vmax from OPP table
  *
  * The DFLL hardware has 33 bytes of look-up table RAM that must be filled with
  * PMIC voltage register values that span the entire DFLL operating range.
@@ -1397,33 +1644,24 @@ static int find_vdd_map_entry_min(struct tegra_dfll *td, int uV)
  * the soc-specific platform driver (td->soc->opp_dev) and the PMIC
  * register-to-voltage mapping queried from the regulator framework.
  *
- * On success, fills in td->i2c_lut and returns 0, or -err on failure.
+ * On success, fills in td->lut and returns 0, or -err on failure.
  */
-static int dfll_build_i2c_lut(struct tegra_dfll *td)
+static int dfll_build_i2c_lut(struct tegra_dfll *td, unsigned long v_max)
 {
+	unsigned long rate, v, v_opp;
 	int ret = -EINVAL;
-	int j, v, v_max, v_opp;
-	int selector;
-	unsigned long rate;
-	struct dev_pm_opp *opp;
-	int lut;
-
-	rate = ULONG_MAX;
-	opp = dev_pm_opp_find_freq_floor(td->soc->dev, &rate);
-	if (IS_ERR(opp)) {
-		dev_err(td->dev, "couldn't get vmax opp, empty opp table?\n");
-		goto out;
-	}
-	v_max = dev_pm_opp_get_voltage(opp);
-	dev_pm_opp_put(opp);
+	int j, selector, lut;
 
 	v = td->soc->cvb->min_millivolts * 1000;
 	lut = find_vdd_map_entry_exact(td, v);
 	if (lut < 0)
 		goto out;
-	td->i2c_lut[0] = lut;
+	td->lut[0] = lut;
+	td->lut_bottom = 0;
 
 	for (j = 1, rate = 0; ; rate++) {
+		struct dev_pm_opp *opp;
+
 		opp = dev_pm_opp_find_freq_ceil(td->soc->dev, &rate);
 		if (IS_ERR(opp))
 			break;
@@ -1435,39 +1673,64 @@ static int dfll_build_i2c_lut(struct tegra_dfll *td)
 		dev_pm_opp_put(opp);
 
 		for (;;) {
-			v += max(1, (v_max - v) / (MAX_DFLL_VOLTAGES - j));
+			v += max(1UL, (v_max - v) / (MAX_DFLL_VOLTAGES - j));
 			if (v >= v_opp)
 				break;
 
 			selector = find_vdd_map_entry_min(td, v);
 			if (selector < 0)
 				goto out;
-			if (selector != td->i2c_lut[j - 1])
-				td->i2c_lut[j++] = selector;
+			if (selector != td->lut[j - 1])
+				td->lut[j++] = selector;
 		}
 
 		v = (j == MAX_DFLL_VOLTAGES - 1) ? v_max : v_opp;
 		selector = find_vdd_map_entry_exact(td, v);
 		if (selector < 0)
 			goto out;
-		if (selector != td->i2c_lut[j - 1])
-			td->i2c_lut[j++] = selector;
+		if (selector != td->lut[j - 1])
+			td->lut[j++] = selector;
 
 		if (v >= v_max)
 			break;
 	}
-	td->i2c_lut_size = j;
+	td->lut_size = j;
 
 	if (!td->dvco_rate_min)
 		dev_err(td->dev, "no opp above DFLL minimum voltage %d mV\n",
 			td->soc->cvb->min_millivolts);
-	else
+	else {
 		ret = 0;
+		for (j = 0; j < td->lut_size; j++)
+			td->lut_uv[j] =
+				regulator_list_voltage(td->vdd_reg,
+						       td->lut[j]);
+	}
 
 out:
 	return ret;
 }
 
+static int dfll_build_lut(struct tegra_dfll *td)
+{
+	unsigned long rate, v_max;
+	struct dev_pm_opp *opp;
+
+	rate = ULONG_MAX;
+	opp = dev_pm_opp_find_freq_floor(td->soc->dev, &rate);
+	if (IS_ERR(opp)) {
+		dev_err(td->dev, "couldn't get vmax opp, empty opp table?\n");
+		return -EINVAL;
+	}
+	v_max = dev_pm_opp_get_voltage(opp);
+	dev_pm_opp_put(opp);
+
+	if (td->pmu_if == TEGRA_DFLL_PMU_PWM)
+		return dfll_build_pwm_lut(td, v_max);
+	else
+		return dfll_build_i2c_lut(td, v_max);
+}
+
 /**
  * read_dt_param - helper function for reading required parameters from the DT
  * @td: DFLL instance
@@ -1526,11 +1789,56 @@ static int dfll_fetch_i2c_params(struct tegra_dfll *td)
 	}
 	td->i2c_reg = vsel_reg;
 
-	ret = dfll_build_i2c_lut(td);
-	if (ret) {
-		dev_err(td->dev, "couldn't build I2C LUT\n");
+	return 0;
+}
+
+static int dfll_fetch_pwm_params(struct tegra_dfll *td)
+{
+	int ret, i;
+	u32 pwm_period;
+
+	if (!td->soc->alignment.step_uv || !td->soc->alignment.offset_uv) {
+		dev_err(td->dev,
+			"Missing step or alignment info for PWM regulator");
+		return -EINVAL;
+	}
+	for (i = 0; i < MAX_DFLL_VOLTAGES; i++)
+		td->lut_uv[i] = td->soc->alignment.offset_uv +
+				i * td->soc->alignment.step_uv;
+
+	ret = read_dt_param(td, "nvidia,pwm-tristate-microvolts",
+			    &td->reg_init_uV);
+	if (!ret) {
+		dev_err(td->dev, "couldn't get initialized voltage\n");
+		return ret;
+	}
+
+	ret = read_dt_param(td, "nvidia,pwm-period-nanoseconds", &pwm_period);
+	if (!ret) {
+		dev_err(td->dev, "couldn't get PWM period\n");
 		return ret;
 	}
+	td->pwm_rate = (NSEC_PER_SEC / pwm_period) * (MAX_DFLL_VOLTAGES - 1);
+
+	td->pwm_pin = devm_pinctrl_get(td->dev);
+	if (IS_ERR(td->pwm_pin)) {
+		dev_err(td->dev, "DT: missing pinctrl device\n");
+		return PTR_ERR(td->pwm_pin);
+	}
+
+	td->pwm_enable_state = pinctrl_lookup_state(td->pwm_pin,
+						    "dvfs_pwm_enable");
+	if (IS_ERR(td->pwm_enable_state)) {
+		dev_err(td->dev, "DT: missing pwm enabled state\n");
+		return PTR_ERR(td->pwm_enable_state);
+	}
+
+	td->pwm_disable_state = pinctrl_lookup_state(td->pwm_pin,
+						     "dvfs_pwm_disable");
+	if (IS_ERR(td->pwm_disable_state)) {
+		dev_err(td->dev, "DT: missing pwm disabled state\n");
+		return PTR_ERR(td->pwm_disable_state);
+	}
 
 	return 0;
 }
@@ -1597,16 +1905,6 @@ int tegra_dfll_register(struct platform_device *pdev,
 
 	td->soc = soc;
 
-	td->vdd_reg = devm_regulator_get(td->dev, "vdd-cpu");
-	if (IS_ERR(td->vdd_reg)) {
-		ret = PTR_ERR(td->vdd_reg);
-		if (ret != -EPROBE_DEFER)
-			dev_err(td->dev, "couldn't get vdd_cpu regulator: %d\n",
-				ret);
-
-		return ret;
-	}
-
 	td->dvco_rst = devm_reset_control_get(td->dev, "dvco");
 	if (IS_ERR(td->dvco_rst)) {
 		dev_err(td->dev, "couldn't get dvco reset\n");
@@ -1619,10 +1917,27 @@ int tegra_dfll_register(struct platform_device *pdev,
 		return ret;
 	}
 
-	ret = dfll_fetch_i2c_params(td);
+	if (of_property_read_bool(td->dev->of_node, "nvidia,pwm-to-pmic")) {
+		td->pmu_if = TEGRA_DFLL_PMU_PWM;
+		ret = dfll_fetch_pwm_params(td);
+	} else  {
+		td->vdd_reg = devm_regulator_get(td->dev, "vdd-cpu");
+		if (IS_ERR(td->vdd_reg)) {
+			dev_err(td->dev, "couldn't get vdd_cpu regulator\n");
+			return PTR_ERR(td->vdd_reg);
+		}
+		td->pmu_if = TEGRA_DFLL_PMU_I2C;
+		ret = dfll_fetch_i2c_params(td);
+	}
 	if (ret)
 		return ret;
 
+	ret = dfll_build_lut(td);
+	if (ret) {
+		dev_err(td->dev, "couldn't build LUT\n");
+		return ret;
+	}
+
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!mem) {
 		dev_err(td->dev, "no control register resource\n");

drivers/clk/tegra/clk-dfll.h

 /*
  * clk-dfll.h - prototypes and macros for the Tegra DFLL clocksource driver
- * Copyright (C) 2013 NVIDIA Corporation.  All rights reserved.
+ * Copyright (C) 2013-2019 NVIDIA Corporation.  All rights reserved.
  *
  * Aleksandr Frid <afrid@nvidia.com>
  * Paul Walmsley <pwalmsley@nvidia.com>
@@ -22,11 +22,14 @@
 #include <linux/reset.h>
 #include <linux/types.h>
 
+#include "cvb.h"
+
 /**
  * struct tegra_dfll_soc_data - SoC-specific hooks/integration for the DFLL driver
  * @dev: struct device * that holds the OPP table for the DFLL
  * @max_freq: maximum frequency supported on this SoC
  * @cvb: CPU frequency table for this SoC
+ * @alignment: parameters of the regulator step and offset
  * @init_clock_trimmers: callback to initialize clock trimmers
  * @set_clock_trimmers_high: callback to tune clock trimmers for high voltage
  * @set_clock_trimmers_low: callback to tune clock trimmers for low voltage
@@ -35,6 +38,7 @@ struct tegra_dfll_soc_data {
 	struct device *dev;
 	unsigned long max_freq;
 	const struct cvb_table *cvb;
+	struct rail_alignment alignment;
 
 	void (*init_clock_trimmers)(void);
 	void (*set_clock_trimmers_high)(void);

drivers/clk/tegra/clk-tegra124-dfll-fcpu.c

 /*
  * Tegra124 DFLL FCPU clock source driver
  *
- * Copyright (C) 2012-2014 NVIDIA Corporation.  All rights reserved.
+ * Copyright (C) 2012-2019 NVIDIA Corporation.  All rights reserved.
  *
  * Aleksandr Frid <afrid@nvidia.com>
  * Paul Walmsley <pwalmsley@nvidia.com>
@@ -21,15 +21,24 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
 #include <soc/tegra/fuse.h>
 
 #include "clk.h"
 #include "clk-dfll.h"
 #include "cvb.h"
 
+struct dfll_fcpu_data {
+	const unsigned long *cpu_max_freq_table;
+	unsigned int cpu_max_freq_table_size;
+	const struct cvb_table *cpu_cvb_tables;
+	unsigned int cpu_cvb_tables_size;
+};
+
 /* Maximum CPU frequency, indexed by CPU speedo id */
-static const unsigned long cpu_max_freq_table[] = {
+static const unsigned long tegra124_cpu_max_freq_table[] = {
 	[0] = 2014500000UL,
 	[1] = 2320500000UL,
 	[2] = 2116500000UL,
@@ -42,9 +51,6 @@ static const struct cvb_table tegra124_cpu_cvb_tables[] = {
 		.process_id = -1,
 		.min_millivolts = 900,
 		.max_millivolts = 1260,
-		.alignment = {
-			.step_uv = 10000, /* 10mV */
-		},
 		.speedo_scale = 100,
 		.voltage_scale = 1000,
 		.entries = {
@@ -82,16 +88,493 @@ static const struct cvb_table tegra124_cpu_cvb_tables[] = {
 	},
 };
 
+static const unsigned long tegra210_cpu_max_freq_table[] = {
+	[0] = 1912500000UL,
+	[1] = 1912500000UL,
+	[2] = 2218500000UL,
+	[3] = 1785000000UL,
+	[4] = 1632000000UL,
+	[5] = 1912500000UL,
+	[6] = 2014500000UL,
+	[7] = 1734000000UL,
+	[8] = 1683000000UL,
+	[9] = 1555500000UL,
+	[10] = 1504500000UL,
+};
+
+#define CPU_CVB_TABLE \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{ 1007452, -23865, 370 } }, \
+		{  306000000UL,	{ 1052709, -24875, 370 } }, \
+		{  408000000UL,	{ 1099069, -25895, 370 } }, \
+		{  510000000UL,	{ 1146534, -26905, 370 } }, \
+		{  612000000UL,	{ 1195102, -27915, 370 } }, \
+		{  714000000UL,	{ 1244773, -28925, 370 } }, \
+		{  816000000UL,	{ 1295549, -29935, 370 } }, \
+		{  918000000UL,	{ 1347428, -30955, 370 } }, \
+		{ 1020000000UL,	{ 1400411, -31965, 370 } }, \
+		{ 1122000000UL,	{ 1454497, -32975, 370 } }, \
+		{ 1224000000UL,	{ 1509687, -33985, 370 } }, \
+		{ 1326000000UL,	{ 1565981, -35005, 370 } }, \
+		{ 1428000000UL,	{ 1623379, -36015, 370 } }, \
+		{ 1530000000UL,	{ 1681880, -37025, 370 } }, \
+		{ 1632000000UL,	{ 1741485, -38035, 370 } }, \
+		{ 1734000000UL,	{ 1802194, -39055, 370 } }, \
+		{ 1836000000UL,	{ 1864006, -40065, 370 } }, \
+		{ 1912500000UL,	{ 1910780, -40815, 370 } }, \
+		{ 2014500000UL,	{ 1227000,      0,   0 } }, \
+		{ 2218500000UL,	{ 1227000,      0,   0 } }, \
+		{          0UL,	{       0,      0,   0 } }, \
+	}
+
+#define CPU_CVB_TABLE_XA \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{ 1250024, -39785, 565 } }, \
+		{  306000000UL,	{ 1297556, -41145, 565 } }, \
+		{  408000000UL,	{ 1346718, -42505, 565 } }, \
+		{  510000000UL,	{ 1397511, -43855, 565 } }, \
+		{  612000000UL,	{ 1449933, -45215, 565 } }, \
+		{  714000000UL,	{ 1503986, -46575, 565 } }, \
+		{  816000000UL,	{ 1559669, -47935, 565 } }, \
+		{  918000000UL,	{ 1616982, -49295, 565 } }, \
+		{ 1020000000UL,	{ 1675926, -50645, 565 } }, \
+		{ 1122000000UL,	{ 1736500, -52005, 565 } }, \
+		{ 1224000000UL,	{ 1798704, -53365, 565 } }, \
+		{ 1326000000UL,	{ 1862538, -54725, 565 } }, \
+		{ 1428000000UL,	{ 1928003, -56085, 565 } }, \
+		{ 1530000000UL,	{ 1995097, -57435, 565 } }, \
+		{ 1606500000UL,	{ 2046149, -58445, 565 } }, \
+		{ 1632000000UL,	{ 2063822, -58795, 565 } }, \
+		{          0UL,	{       0,      0,   0 } }, \
+	}
+
+#define CPU_CVB_TABLE_EUCM1 \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{  734429, 0, 0 } }, \
+		{  306000000UL,	{  768191, 0, 0 } }, \
+		{  408000000UL,	{  801953, 0, 0 } }, \
+		{  510000000UL,	{  835715, 0, 0 } }, \
+		{  612000000UL,	{  869477, 0, 0 } }, \
+		{  714000000UL,	{  903239, 0, 0 } }, \
+		{  816000000UL,	{  937001, 0, 0 } }, \
+		{  918000000UL,	{  970763, 0, 0 } }, \
+		{ 1020000000UL,	{ 1004525, 0, 0 } }, \
+		{ 1122000000UL,	{ 1038287, 0, 0 } }, \
+		{ 1224000000UL,	{ 1072049, 0, 0 } }, \
+		{ 1326000000UL,	{ 1105811, 0, 0 } }, \
+		{ 1428000000UL,	{ 1130000, 0, 0 } }, \
+		{ 1555500000UL,	{ 1130000, 0, 0 } }, \
+		{ 1632000000UL,	{ 1170000, 0, 0 } }, \
+		{ 1734000000UL,	{ 1227500, 0, 0 } }, \
+		{          0UL,	{       0, 0, 0 } }, \
+	}
+
+#define CPU_CVB_TABLE_EUCM2 \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{  742283, 0, 0 } }, \
+		{  306000000UL,	{  776249, 0, 0 } }, \
+		{  408000000UL,	{  810215, 0, 0 } }, \
+		{  510000000UL,	{  844181, 0, 0 } }, \
+		{  612000000UL,	{  878147, 0, 0 } }, \
+		{  714000000UL,	{  912113, 0, 0 } }, \
+		{  816000000UL,	{  946079, 0, 0 } }, \
+		{  918000000UL,	{  980045, 0, 0 } }, \
+		{ 1020000000UL,	{ 1014011, 0, 0 } }, \
+		{ 1122000000UL,	{ 1047977, 0, 0 } }, \
+		{ 1224000000UL,	{ 1081943, 0, 0 } }, \
+		{ 1326000000UL,	{ 1090000, 0, 0 } }, \
+		{ 1479000000UL,	{ 1090000, 0, 0 } }, \
+		{ 1555500000UL,	{ 1162000, 0, 0 } }, \
+		{ 1683000000UL,	{ 1195000, 0, 0 } }, \
+		{          0UL,	{       0, 0, 0 } }, \
+	}
+
+#define CPU_CVB_TABLE_EUCM2_JOINT_RAIL \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{  742283, 0, 0 } }, \
+		{  306000000UL,	{  776249, 0, 0 } }, \
+		{  408000000UL,	{  810215, 0, 0 } }, \
+		{  510000000UL,	{  844181, 0, 0 } }, \
+		{  612000000UL,	{  878147, 0, 0 } }, \
+		{  714000000UL,	{  912113, 0, 0 } }, \
+		{  816000000UL,	{  946079, 0, 0 } }, \
+		{  918000000UL,	{  980045, 0, 0 } }, \
+		{ 1020000000UL,	{ 1014011, 0, 0 } }, \
+		{ 1122000000UL,	{ 1047977, 0, 0 } }, \
+		{ 1224000000UL,	{ 1081943, 0, 0 } }, \
+		{ 1326000000UL,	{ 1090000, 0, 0 } }, \
+		{ 1479000000UL,	{ 1090000, 0, 0 } }, \
+		{ 1504500000UL,	{ 1120000, 0, 0 } }, \
+		{          0UL,	{       0, 0, 0 } }, \
+	}
+
+#define CPU_CVB_TABLE_ODN \
+	.speedo_scale = 100,	\
+	.voltage_scale = 1000,	\
+	.entries = {		\
+		{  204000000UL,	{  721094, 0, 0 } }, \
+		{  306000000UL,	{  754040, 0, 0 } }, \
+		{  408000000UL,	{  786986, 0, 0 } }, \
+		{  510000000UL,	{  819932, 0, 0 } }, \
+		{  612000000UL,	{  852878, 0, 0 } }, \
+		{  714000000UL,	{  885824, 0, 0 } }, \
+		{  816000000UL,	{  918770, 0, 0 } }, \
+		{  918000000UL,	{  915716, 0, 0 } }, \
+		{ 1020000000UL,	{  984662, 0, 0 } }, \
+		{ 1122000000UL,	{ 1017608, 0, 0 } }, \
+		{ 1224000000UL,	{ 1050554, 0, 0 } }, \
+		{ 1326000000UL,	{ 1083500, 0, 0 } }, \
+		{ 1428000000UL,	{ 1116446, 0, 0 } }, \
+		{ 1581000000UL,	{ 1130000, 0, 0 } }, \
+		{ 1683000000UL,	{ 1168000, 0, 0 } }, \
+		{ 1785000000UL,	{ 1227500, 0, 0 } }, \
+		{          0UL,	{       0, 0, 0 } }, \
+	}
+
+static struct cvb_table tegra210_cpu_cvb_tables[] = {
+	{
+		.speedo_id = 10,
+		.process_id = 0,
+		.min_millivolts = 840,
+		.max_millivolts = 1120,
+		CPU_CVB_TABLE_EUCM2_JOINT_RAIL,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 10,
+		.process_id = 1,
+		.min_millivolts = 840,
+		.max_millivolts = 1120,
+		CPU_CVB_TABLE_EUCM2_JOINT_RAIL,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 9,
+		.process_id = 0,
+		.min_millivolts = 900,
+		.max_millivolts = 1162,
+		CPU_CVB_TABLE_EUCM2,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 9,
+		.process_id = 1,
+		.min_millivolts = 900,
+		.max_millivolts = 1162,
+		CPU_CVB_TABLE_EUCM2,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 8,
+		.process_id = 0,
+		.min_millivolts = 900,
+		.max_millivolts = 1195,
+		CPU_CVB_TABLE_EUCM2,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 8,
+		.process_id = 1,
+		.min_millivolts = 900,
+		.max_millivolts = 1195,
+		CPU_CVB_TABLE_EUCM2,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 7,
+		.process_id = 0,
+		.min_millivolts = 841,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE_EUCM1,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 7,
+		.process_id = 1,
+		.min_millivolts = 841,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE_EUCM1,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 6,
+		.process_id = 0,
+		.min_millivolts = 870,
+		.max_millivolts = 1150,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 6,
+		.process_id = 1,
+		.min_millivolts = 870,
+		.max_millivolts = 1150,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x25501d0,
+		}
+	},
+	{
+		.speedo_id = 5,
+		.process_id = 0,
+		.min_millivolts = 818,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 5,
+		.process_id = 1,
+		.min_millivolts = 818,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x25501d0,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 4,
+		.process_id = -1,
+		.min_millivolts = 918,
+		.max_millivolts = 1113,
+		CPU_CVB_TABLE_XA,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x17711BD,
+		}
+	},
+	{
+		.speedo_id = 3,
+		.process_id = 0,
+		.min_millivolts = 825,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE_ODN,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 3,
+		.process_id = 1,
+		.min_millivolts = 825,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE_ODN,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x25501d0,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 2,
+		.process_id = 0,
+		.min_millivolts = 870,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x20091d9,
+		}
+	},
+	{
+		.speedo_id = 2,
+		.process_id = 1,
+		.min_millivolts = 870,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune1 = 0x25501d0,
+		}
+	},
+	{
+		.speedo_id = 1,
+		.process_id = 0,
+		.min_millivolts = 837,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 1,
+		.process_id = 1,
+		.min_millivolts = 837,
+		.max_millivolts = 1227,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x25501d0,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 0,
+		.process_id = 0,
+		.min_millivolts = 850,
+		.max_millivolts = 1170,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x20091d9,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+	{
+		.speedo_id = 0,
+		.process_id = 1,
+		.min_millivolts = 850,
+		.max_millivolts = 1170,
+		CPU_CVB_TABLE,
+		.cpu_dfll_data = {
+			.tune0_low = 0xffead0ff,
+			.tune0_high = 0xffead0ff,
+			.tune1 = 0x25501d0,
+			.tune_high_min_millivolts = 864,
+		}
+	},
+};
+
+static const struct dfll_fcpu_data tegra124_dfll_fcpu_data = {
+	.cpu_max_freq_table = tegra124_cpu_max_freq_table,
+	.cpu_max_freq_table_size = ARRAY_SIZE(tegra124_cpu_max_freq_table),
+	.cpu_cvb_tables = tegra124_cpu_cvb_tables,
+	.cpu_cvb_tables_size = ARRAY_SIZE(tegra124_cpu_cvb_tables)
+};
+
+static const struct dfll_fcpu_data tegra210_dfll_fcpu_data = {
+	.cpu_max_freq_table = tegra210_cpu_max_freq_table,
+	.cpu_max_freq_table_size = ARRAY_SIZE(tegra210_cpu_max_freq_table),
+	.cpu_cvb_tables = tegra210_cpu_cvb_tables,
+	.cpu_cvb_tables_size = ARRAY_SIZE(tegra210_cpu_cvb_tables),
+};
+
+static const struct of_device_id tegra124_dfll_fcpu_of_match[] = {
+	{
+		.compatible = "nvidia,tegra124-dfll",
+		.data = &tegra124_dfll_fcpu_data,
+	},
+	{
+		.compatible = "nvidia,tegra210-dfll",
+		.data = &tegra210_dfll_fcpu_data
+	},
+	{ },
+};
+
+static void get_alignment_from_dt(struct device *dev,
+				  struct rail_alignment *align)
+{
+	if (of_property_read_u32(dev->of_node,
+				 "nvidia,pwm-voltage-step-microvolts",
+				 &align->step_uv))
+		align->step_uv = 0;
+
+	if (of_property_read_u32(dev->of_node,
+				 "nvidia,pwm-min-microvolts",
+				 &align->offset_uv))
+		align->offset_uv = 0;
+}
+
+static int get_alignment_from_regulator(struct device *dev,
+					 struct rail_alignment *align)
+{
+	struct regulator *reg = devm_regulator_get(dev, "vdd-cpu");
+
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
+
+	align->offset_uv = regulator_list_voltage(reg, 0);
+	align->step_uv = regulator_get_linear_step(reg);
+
+	devm_regulator_put(reg);
+
+	return 0;
+}
+
 static int tegra124_dfll_fcpu_probe(struct platform_device *pdev)
 {
 	int process_id, speedo_id, speedo_value, err;
 	struct tegra_dfll_soc_data *soc;
+	const struct dfll_fcpu_data *fcpu_data;
+	struct rail_alignment align;
+
+	fcpu_data = of_device_get_match_data(&pdev->dev);
+	if (!fcpu_data)
+		return -ENODEV;
 
 	process_id = tegra_sku_info.cpu_process_id;
 	speedo_id = tegra_sku_info.cpu_speedo_id;
 	speedo_value = tegra_sku_info.cpu_speedo_value;
 
-	if (speedo_id >= ARRAY_SIZE(cpu_max_freq_table)) {
+	if (speedo_id >= fcpu_data->cpu_max_freq_table_size) {
 		dev_err(&pdev->dev, "unknown max CPU freq for speedo_id=%d\n",
 			speedo_id);
 		return -ENODEV;
@@ -107,12 +590,22 @@ static int tegra124_dfll_fcpu_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	soc->max_freq = cpu_max_freq_table[speedo_id];
+	if (of_property_read_bool(pdev->dev.of_node, "nvidia,pwm-to-pmic")) {
+		get_alignment_from_dt(&pdev->dev, &align);
+	} else {
+		err = get_alignment_from_regulator(&pdev->dev, &align);
+		if (err)
+			return err;
+	}
+
+	soc->max_freq = fcpu_data->cpu_max_freq_table[speedo_id];
+
+	soc->cvb = tegra_cvb_add_opp_table(soc->dev, fcpu_data->cpu_cvb_tables,
+					   fcpu_data->cpu_cvb_tables_size,
+					   &align, process_id, speedo_id,
+					   speedo_value, soc->max_freq);
+	soc->alignment = align;
 
-	soc->cvb = tegra_cvb_add_opp_table(soc->dev, tegra124_cpu_cvb_tables,
-					   ARRAY_SIZE(tegra124_cpu_cvb_tables),
-					   process_id, speedo_id, speedo_value,
-					   soc->max_freq);
 	if (IS_ERR(soc->cvb)) {
 		dev_err(&pdev->dev, "couldn't add OPP table: %ld\n",
 			PTR_ERR(soc->cvb));
@@ -144,11 +637,6 @@ static int tegra124_dfll_fcpu_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct of_device_id tegra124_dfll_fcpu_of_match[] = {
-	{ .compatible = "nvidia,tegra124-dfll", },
-	{ },
-};
-
 static const struct dev_pm_ops tegra124_dfll_pm_ops = {
 	SET_RUNTIME_PM_OPS(tegra_dfll_runtime_suspend,
 			   tegra_dfll_runtime_resume, NULL)

drivers/clk/tegra/cvb.c

 /*
  * Utility functions for parsing Tegra CVB voltage tables
  *
- * Copyright (C) 2012-2014 NVIDIA Corporation.  All rights reserved.
+ * Copyright (C) 2012-2019 NVIDIA Corporation.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -62,9 +62,9 @@ static int round_voltage(int mv, const struct rail_alignment *align, int up)
 }
 
 static int build_opp_table(struct device *dev, const struct cvb_table *table,
+			   struct rail_alignment *align,
 			   int speedo_value, unsigned long max_freq)
 {
-	const struct rail_alignment *align = &table->alignment;
 	int i, ret, dfll_mv, min_mv, max_mv;
 
 	min_mv = round_voltage(table->min_millivolts, align, UP);
@@ -109,8 +109,9 @@ static int build_opp_table(struct device *dev, const struct cvb_table *table,
  */
 const struct cvb_table *
 tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *tables,
-			size_t count, int process_id, int speedo_id,
-			int speedo_value, unsigned long max_freq)
+			size_t count, struct rail_alignment *align,
+			int process_id, int speedo_id, int speedo_value,
+			unsigned long max_freq)
 {
 	size_t i;
 	int ret;
@@ -124,7 +125,8 @@ tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *tables,
 		if (table->process_id != -1 && table->process_id != process_id)
 			continue;
 
-		ret = build_opp_table(dev, table, speedo_value, max_freq);
+		ret = build_opp_table(dev, table, align, speedo_value,
+				      max_freq);
 		return ret ? ERR_PTR(ret) : table;
 	}
 

drivers/clk/tegra/cvb.h

@@ -41,6 +41,7 @@ struct cvb_cpu_dfll_data {
 	u32 tune0_low;
 	u32 tune0_high;
 	u32 tune1;
+	unsigned int tune_high_min_millivolts;
 };
 
 struct cvb_table {
@@ -49,7 +50,6 @@ struct cvb_table {
 
 	int min_millivolts;
 	int max_millivolts;
-	struct rail_alignment alignment;
 
 	int speedo_scale;
 	int voltage_scale;
@@ -59,8 +59,9 @@ struct cvb_table {
 
 const struct cvb_table *
 tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *cvb_tables,
-			size_t count, int process_id, int speedo_id,
-			int speedo_value, unsigned long max_freq);
+			size_t count, struct rail_alignment *align,
+			int process_id, int speedo_id, int speedo_value,
+			unsigned long max_freq);
 void tegra_cvb_remove_opp_table(struct device *dev,
 				const struct cvb_table *table,
 				unsigned long max_freq);

drivers/cpufreq/Kconfig.arm

@@ -272,8 +272,8 @@ config ARM_TEGRA20_CPUFREQ
 	  This adds the CPUFreq driver support for Tegra20 SOCs.
 
 config ARM_TEGRA124_CPUFREQ
-	tristate "Tegra124 CPUFreq support"
-	depends on ARCH_TEGRA && CPUFREQ_DT && REGULATOR
+	bool "Tegra124 CPUFreq support"
+	depends on ARCH_TEGRA && CPUFREQ_DT
 	default y
 	help
 	  This adds the CPUFreq driver support for Tegra124 SOCs.

drivers/cpufreq/cpufreq-dt-platdev.c

@@ -119,6 +119,7 @@ static const struct of_device_id blacklist[] __initconst = {
 	{ .compatible = "mediatek,mt8176", },
 
 	{ .compatible = "nvidia,tegra124", },
+	{ .compatible = "nvidia,tegra210", },
 
 	{ .compatible = "qcom,apq8096", },
 	{ .compatible = "qcom,msm8996", },

drivers/cpufreq/tegra124-cpufreq.c

@@ -22,11 +22,9 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>
-#include <linux/regulator/consumer.h>
 #include <linux/types.h>
 
 struct tegra124_cpufreq_priv {
-	struct regulator *vdd_cpu_reg;
 	struct clk *cpu_clk;
 	struct clk *pllp_clk;
 	struct clk *pllx_clk;
@@ -60,14 +58,6 @@ static int tegra124_cpu_switch_to_dfll(struct tegra124_cpufreq_priv *priv)
 	return ret;
 }
 
-static void tegra124_cpu_switch_to_pllx(struct tegra124_cpufreq_priv *priv)
-{
-	clk_set_parent(priv->cpu_clk, priv->pllp_clk);
-	clk_disable_unprepare(priv->dfll_clk);
-	regulator_sync_voltage(priv->vdd_cpu_reg);
-	clk_set_parent(priv->cpu_clk, priv->pllx_clk);
-}
-
 static int tegra124_cpufreq_probe(struct platform_device *pdev)
 {
 	struct tegra124_cpufreq_priv *priv;
@@ -88,16 +78,10 @@ static int tegra124_cpufreq_probe(struct platform_device *pdev)
 	if (!np)
 		return -ENODEV;
 
-	priv->vdd_cpu_reg = regulator_get(cpu_dev, "vdd-cpu");
-	if (IS_ERR(priv->vdd_cpu_reg)) {
-		ret = PTR_ERR(priv->vdd_cpu_reg);
-		goto out_put_np;
-	}
-
 	priv->cpu_clk = of_clk_get_by_name(np, "cpu_g");
 	if (IS_ERR(priv->cpu_clk)) {
 		ret = PTR_ERR(priv->cpu_clk);
-		goto out_put_vdd_cpu_reg;
+		goto out_put_np;
 	}
 
 	priv->dfll_clk = of_clk_get_by_name(np, "dfll");
@@ -129,15 +113,13 @@ static int tegra124_cpufreq_probe(struct platform_device *pdev)
 		platform_device_register_full(&cpufreq_dt_devinfo);
 	if (IS_ERR(priv->cpufreq_dt_pdev)) {
 		ret = PTR_ERR(priv->cpufreq_dt_pdev);
-		goto out_switch_to_pllx;
+		goto out_put_pllp_clk;
 	}
 
 	platform_set_drvdata(pdev, priv);
 
 	return 0;
 
-out_switch_to_pllx:
-	tegra124_cpu_switch_to_pllx(priv);
 out_put_pllp_clk:
 	clk_put(priv->pllp_clk);
 out_put_pllx_clk:
@@ -146,34 +128,15 @@ static int tegra124_cpufreq_probe(struct platform_device *pdev)
 	clk_put(priv->dfll_clk);
 out_put_cpu_clk:
 	clk_put(priv->cpu_clk);
-out_put_vdd_cpu_reg:
-	regulator_put(priv->vdd_cpu_reg);
 out_put_np:
 	of_node_put(np);
 
 	return ret;
 }
 
-static int tegra124_cpufreq_remove(struct platform_device *pdev)
-{
-	struct tegra124_cpufreq_priv *priv = platform_get_drvdata(pdev);
-
-	platform_device_unregister(priv->cpufreq_dt_pdev);
-	tegra124_cpu_switch_to_pllx(priv);
-
-	clk_put(priv->pllp_clk);
-	clk_put(priv->pllx_clk);
-	clk_put(priv->dfll_clk);
-	clk_put(priv->cpu_clk);
-	regulator_put(priv->vdd_cpu_reg);
-
-	return 0;
-}
-
 static struct platform_driver tegra124_cpufreq_platdrv = {
 	.driver.name	= "cpufreq-tegra124",
 	.probe		= tegra124_cpufreq_probe,
-	.remove		= tegra124_cpufreq_remove,
 };
 
 static int __init tegra_cpufreq_init(void)
@@ -181,7 +144,8 @@ static int __init tegra_cpufreq_init(void)
 	int ret;
 	struct platform_device *pdev;
 
-	if (!of_machine_is_compatible("nvidia,tegra124"))
+	if (!(of_machine_is_compatible("nvidia,tegra124") ||
+		of_machine_is_compatible("nvidia,tegra210")))
 		return -ENODEV;
 
 	/*

drivers/firmware/imx/misc.c

@@ -18,6 +18,14 @@ struct imx_sc_msg_req_misc_set_ctrl {
 	u16 resource;
 } __packed;
 
+struct imx_sc_msg_req_cpu_start {
+	struct imx_sc_rpc_msg hdr;
+	u32 address_hi;
+	u32 address_lo;
+	u16 resource;
+	u8 enable;
+} __packed;
+
 struct imx_sc_msg_req_misc_get_ctrl {
 	struct imx_sc_rpc_msg hdr;
 	u32 ctrl;
@@ -97,3 +105,33 @@ int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource,
 	return 0;
 }
 EXPORT_SYMBOL(imx_sc_misc_get_control);
+
+/*
+ * This function starts/stops a CPU identified by @resource
+ *
+ * @param[in]     ipc         IPC handle
+ * @param[in]     resource    resource the control is associated with
+ * @param[in]     enable      true for start, false for stop
+ * @param[in]     phys_addr   initial instruction address to be executed
+ *
+ * @return Returns 0 for success and < 0 for errors.
+ */
+int imx_sc_pm_cpu_start(struct imx_sc_ipc *ipc, u32 resource,
+			bool enable, u64 phys_addr)
+{
+	struct imx_sc_msg_req_cpu_start msg;
+	struct imx_sc_rpc_msg *hdr = &msg.hdr;
+
+	hdr->ver = IMX_SC_RPC_VERSION;
+	hdr->svc = IMX_SC_RPC_SVC_PM;
+	hdr->func = IMX_SC_PM_FUNC_CPU_START;
+	hdr->size = 4;
+
+	msg.address_hi = phys_addr >> 32;
+	msg.address_lo = phys_addr;
+	msg.resource = resource;
+	msg.enable = enable;
+
+	return imx_scu_call_rpc(ipc, &msg, true);
+}
+EXPORT_SYMBOL(imx_sc_pm_cpu_start);

drivers/firmware/imx/scu-pd.c

@@ -322,6 +322,7 @@ static int imx_sc_pd_probe(struct platform_device *pdev)
 
 static const struct of_device_id imx_sc_pd_match[] = {
 	{ .compatible = "fsl,imx8qxp-scu-pd", &imx8qxp_scu_pd},
+	{ .compatible = "fsl,scu-pd", &imx8qxp_scu_pd},
 	{ /* sentinel */ }
 };
 

drivers/firmware/raspberrypi.c

@@ -238,6 +238,16 @@ static int rpi_firmware_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static void rpi_firmware_shutdown(struct platform_device *pdev)
+{
+	struct rpi_firmware *fw = platform_get_drvdata(pdev);
+
+	if (!fw)
+		return;
+
+	rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_REBOOT, NULL, 0);
+}
+
 static int rpi_firmware_remove(struct platform_device *pdev)
 {
 	struct rpi_firmware *fw = platform_get_drvdata(pdev);
@@ -278,6 +288,7 @@ static struct platform_driver rpi_firmware_driver = {
 		.of_match_table = rpi_firmware_of_match,
 	},
 	.probe		= rpi_firmware_probe,
+	.shutdown	= rpi_firmware_shutdown,
 	.remove		= rpi_firmware_remove,
 };
 module_platform_driver(rpi_firmware_driver);

drivers/firmware/tegra/Makefile

 tegra-bpmp-y			= bpmp.o
+tegra-bpmp-$(CONFIG_ARCH_TEGRA_210_SOC)	+= bpmp-tegra210.o
+tegra-bpmp-$(CONFIG_ARCH_TEGRA_186_SOC)	+= bpmp-tegra186.o
+tegra-bpmp-$(CONFIG_ARCH_TEGRA_194_SOC)	+= bpmp-tegra186.o
 tegra-bpmp-$(CONFIG_DEBUG_FS)	+= bpmp-debugfs.o
 obj-$(CONFIG_TEGRA_BPMP)	+= tegra-bpmp.o
 obj-$(CONFIG_TEGRA_IVC)		+= ivc.o

drivers/firmware/tegra/bpmp-private.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.
+ */
+
+#ifndef __FIRMWARE_TEGRA_BPMP_PRIVATE_H
+#define __FIRMWARE_TEGRA_BPMP_PRIVATE_H
+
+#include <soc/tegra/bpmp.h>
+
+struct tegra_bpmp_ops {
+	int (*init)(struct tegra_bpmp *bpmp);
+	void (*deinit)(struct tegra_bpmp *bpmp);
+	bool (*is_response_ready)(struct tegra_bpmp_channel *channel);
+	bool (*is_request_ready)(struct tegra_bpmp_channel *channel);
+	int (*ack_response)(struct tegra_bpmp_channel *channel);
+	int (*ack_request)(struct tegra_bpmp_channel *channel);
+	bool (*is_response_channel_free)(struct tegra_bpmp_channel *channel);
+	bool (*is_request_channel_free)(struct tegra_bpmp_channel *channel);
+	int (*post_response)(struct tegra_bpmp_channel *channel);
+	int (*post_request)(struct tegra_bpmp_channel *channel);
+	int (*ring_doorbell)(struct tegra_bpmp *bpmp);
+	int (*resume)(struct tegra_bpmp *bpmp);
+};
+
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC) || \
+    IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
+extern const struct tegra_bpmp_ops tegra186_bpmp_ops;
+#endif
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
+extern const struct tegra_bpmp_ops tegra210_bpmp_ops;
+#endif
+
+#endif

drivers/firmware/tegra/bpmp-tegra186.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.
+ */
+
+#include <linux/genalloc.h>
+#include <linux/mailbox_client.h>
+#include <linux/platform_device.h>
+
+#include <soc/tegra/bpmp.h>
+#include <soc/tegra/bpmp-abi.h>
+#include <soc/tegra/ivc.h>
+
+#include "bpmp-private.h"
+
+struct tegra186_bpmp {
+	struct tegra_bpmp *parent;
+
+	struct {
+		struct gen_pool *pool;
+		dma_addr_t phys;
+		void *virt;
+	} tx, rx;
+
+	struct {
+		struct mbox_client client;
+		struct mbox_chan *channel;
+	} mbox;
+};
+
+static inline struct tegra_bpmp *
+mbox_client_to_bpmp(struct mbox_client *client)
+{
+	struct tegra186_bpmp *priv;
+
+	priv = container_of(client, struct tegra186_bpmp, mbox.client);
+
+	return priv->parent;
+}
+
+static bool tegra186_bpmp_is_message_ready(struct tegra_bpmp_channel *channel)
+{
+	void *frame;
+
+	frame = tegra_ivc_read_get_next_frame(channel->ivc);
+	if (IS_ERR(frame)) {
+		channel->ib = NULL;
+		return false;
+	}
+
+	channel->ib = frame;
+
+	return true;
+}
+
+static bool tegra186_bpmp_is_channel_free(struct tegra_bpmp_channel *channel)
+{
+	void *frame;
+
+	frame = tegra_ivc_write_get_next_frame(channel->ivc);
+	if (IS_ERR(frame)) {
+		channel->ob = NULL;
+		return false;
+	}
+
+	channel->ob = frame;
+
+	return true;
+}
+
+static int tegra186_bpmp_ack_message(struct tegra_bpmp_channel *channel)
+{
+	return tegra_ivc_read_advance(channel->ivc);
+}
+
+static int tegra186_bpmp_post_message(struct tegra_bpmp_channel *channel)
+{
+	return tegra_ivc_write_advance(channel->ivc);
+}
+
+static int tegra186_bpmp_ring_doorbell(struct tegra_bpmp *bpmp)
+{
+	struct tegra186_bpmp *priv = bpmp->priv;
+	int err;
+
+	err = mbox_send_message(priv->mbox.channel, NULL);
+	if (err < 0)
+		return err;
+
+	mbox_client_txdone(priv->mbox.channel, 0);
+
+	return 0;
+}
+
+static void tegra186_bpmp_ivc_notify(struct tegra_ivc *ivc, void *data)
+{
+	struct tegra_bpmp *bpmp = data;
+	struct tegra186_bpmp *priv = bpmp->priv;
+
+	if (WARN_ON(priv->mbox.channel == NULL))
+		return;
+
+	tegra186_bpmp_ring_doorbell(bpmp);
+}
+
+static int tegra186_bpmp_channel_init(struct tegra_bpmp_channel *channel,
+				      struct tegra_bpmp *bpmp,
+				      unsigned int index)
+{
+	struct tegra186_bpmp *priv = bpmp->priv;
+	size_t message_size, queue_size;
+	unsigned int offset;
+	int err;
+
+	channel->ivc = devm_kzalloc(bpmp->dev, sizeof(*channel->ivc),
+				    GFP_KERNEL);
+	if (!channel->ivc)
+		return -ENOMEM;
+
+	message_size = tegra_ivc_align(MSG_MIN_SZ);
+	queue_size = tegra_ivc_total_queue_size(message_size);
+	offset = queue_size * index;
+
+	err = tegra_ivc_init(channel->ivc, NULL,
+			     priv->rx.virt + offset, priv->rx.phys + offset,
+			     priv->tx.virt + offset, priv->tx.phys + offset,
+			     1, message_size, tegra186_bpmp_ivc_notify,
+			     bpmp);
+	if (err < 0) {
+		dev_err(bpmp->dev, "failed to setup IVC for channel %u: %d\n",
+			index, err);
+		return err;
+	}
+
+	init_completion(&channel->completion);
+	channel->bpmp = bpmp;
+
+	return 0;
+}
+
+static void tegra186_bpmp_channel_reset(struct tegra_bpmp_channel *channel)
+{
+	/* reset the channel state */
+	tegra_ivc_reset(channel->ivc);
+
+	/* sync the channel state with BPMP */
+	while (tegra_ivc_notified(channel->ivc))
+		;
+}
+
+static void tegra186_bpmp_channel_cleanup(struct tegra_bpmp_channel *channel)
+{
+	tegra_ivc_cleanup(channel->ivc);
+}
+
+static void mbox_handle_rx(struct mbox_client *client, void *data)
+{
+	struct tegra_bpmp *bpmp = mbox_client_to_bpmp(client);
+
+	tegra_bpmp_handle_rx(bpmp);
+}
+
+static int tegra186_bpmp_init(struct tegra_bpmp *bpmp)
+{
+	struct tegra186_bpmp *priv;
+	unsigned int i;
+	int err;
+
+	priv = devm_kzalloc(bpmp->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	bpmp->priv = priv;
+	priv->parent = bpmp;
+
+	priv->tx.pool = of_gen_pool_get(bpmp->dev->of_node, "shmem", 0);
+	if (!priv->tx.pool) {
+		dev_err(bpmp->dev, "TX shmem pool not found\n");
+		return -ENOMEM;
+	}
+
+	priv->tx.virt = gen_pool_dma_alloc(priv->tx.pool, 4096, &priv->tx.phys);
+	if (!priv->tx.virt) {
+		dev_err(bpmp->dev, "failed to allocate from TX pool\n");
+		return -ENOMEM;
+	}
+
+	priv->rx.pool = of_gen_pool_get(bpmp->dev->of_node, "shmem", 1);
+	if (!priv->rx.pool) {
+		dev_err(bpmp->dev, "RX shmem pool not found\n");
+		err = -ENOMEM;
+		goto free_tx;
+	}
+
+	priv->rx.virt = gen_pool_dma_alloc(priv->rx.pool, 4096, &priv->rx.phys);
+	if (!priv->rx.virt) {
+		dev_err(bpmp->dev, "failed to allocate from RX pool\n");
+		err = -ENOMEM;
+		goto free_tx;
+	}
+
+	err = tegra186_bpmp_channel_init(bpmp->tx_channel, bpmp,
+					 bpmp->soc->channels.cpu_tx.offset);
+	if (err < 0)
+		goto free_rx;
+
+	err = tegra186_bpmp_channel_init(bpmp->rx_channel, bpmp,
+					 bpmp->soc->channels.cpu_rx.offset);
+	if (err < 0)
+		goto cleanup_tx_channel;
+
+	for (i = 0; i < bpmp->threaded.count; i++) {
+		unsigned int index = bpmp->soc->channels.thread.offset + i;
+
+		err = tegra186_bpmp_channel_init(&bpmp->threaded_channels[i],
+						 bpmp, index);
+		if (err < 0)
+			goto cleanup_channels;
+	}
+
+	/* mbox registration */
+	priv->mbox.client.dev = bpmp->dev;
+	priv->mbox.client.rx_callback = mbox_handle_rx;
+	priv->mbox.client.tx_block = false;
+	priv->mbox.client.knows_txdone = false;
+
+	priv->mbox.channel = mbox_request_channel(&priv->mbox.client, 0);
+	if (IS_ERR(priv->mbox.channel)) {
+		err = PTR_ERR(priv->mbox.channel);
+		dev_err(bpmp->dev, "failed to get HSP mailbox: %d\n", err);
+		goto cleanup_channels;
+	}
+
+	tegra186_bpmp_channel_reset(bpmp->tx_channel);
+	tegra186_bpmp_channel_reset(bpmp->rx_channel);
+
+	for (i = 0; i < bpmp->threaded.count; i++)
+		tegra186_bpmp_channel_reset(&bpmp->threaded_channels[i]);
+
+	return 0;
+
+cleanup_channels:
+	for (i = 0; i < bpmp->threaded.count; i++) {
+		if (!bpmp->threaded_channels[i].bpmp)
+			continue;
+
+		tegra186_bpmp_channel_cleanup(&bpmp->threaded_channels[i]);
+	}
+
+	tegra186_bpmp_channel_cleanup(bpmp->rx_channel);
+cleanup_tx_channel:
+	tegra186_bpmp_channel_cleanup(bpmp->tx_channel);
+free_rx:
+	gen_pool_free(priv->rx.pool, (unsigned long)priv->rx.virt, 4096);
+free_tx:
+	gen_pool_free(priv->tx.pool, (unsigned long)priv->tx.virt, 4096);
+
+	return err;
+}
+
+static void tegra186_bpmp_deinit(struct tegra_bpmp *bpmp)
+{
+	struct tegra186_bpmp *priv = bpmp->priv;
+	unsigned int i;
+
+	mbox_free_channel(priv->mbox.channel);
+
+	for (i = 0; i < bpmp->threaded.count; i++)
+		tegra186_bpmp_channel_cleanup(&bpmp->threaded_channels[i]);
+
+	tegra186_bpmp_channel_cleanup(bpmp->rx_channel);
+	tegra186_bpmp_channel_cleanup(bpmp->tx_channel);
+
+	gen_pool_free(priv->rx.pool, (unsigned long)priv->rx.virt, 4096);
+	gen_pool_free(priv->tx.pool, (unsigned long)priv->tx.virt, 4096);
+}
+
+static int tegra186_bpmp_resume(struct tegra_bpmp *bpmp)
+{
+	unsigned int i;
+
+	/* reset message channels */
+	tegra186_bpmp_channel_reset(bpmp->tx_channel);
+	tegra186_bpmp_channel_reset(bpmp->rx_channel);
+
+	for (i = 0; i < bpmp->threaded.count; i++)
+		tegra186_bpmp_channel_reset(&bpmp->threaded_channels[i]);
+
+	return 0;
+}
+
+const struct tegra_bpmp_ops tegra186_bpmp_ops = {
+	.init = tegra186_bpmp_init,
+	.deinit = tegra186_bpmp_deinit,
+	.is_response_ready = tegra186_bpmp_is_message_ready,
+	.is_request_ready = tegra186_bpmp_is_message_ready,
+	.ack_response = tegra186_bpmp_ack_message,
+	.ack_request = tegra186_bpmp_ack_message,
+	.is_response_channel_free = tegra186_bpmp_is_channel_free,
+	.is_request_channel_free = tegra186_bpmp_is_channel_free,
+	.post_response = tegra186_bpmp_post_message,
+	.post_request = tegra186_bpmp_post_message,
+	.ring_doorbell = tegra186_bpmp_ring_doorbell,
+	.resume = tegra186_bpmp_resume,
+};

drivers/firmware/tegra/bpmp-tegra210.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include <soc/tegra/bpmp.h>
+
+#include "bpmp-private.h"
+
+#define TRIGGER_OFFSET		0x000
+#define RESULT_OFFSET(id)	(0xc00 + id * 4)
+#define TRIGGER_ID_SHIFT	16
+#define TRIGGER_CMD_GET		4
+
+#define STA_OFFSET		0
+#define SET_OFFSET		4
+#define CLR_OFFSET		8
+
+#define CH_MASK(ch)	(0x3 << ((ch) * 2))
+#define SL_SIGL(ch)	(0x0 << ((ch) * 2))
+#define SL_QUED(ch)	(0x1 << ((ch) * 2))
+#define MA_FREE(ch)	(0x2 << ((ch) * 2))
+#define MA_ACKD(ch)	(0x3 << ((ch) * 2))
+
+struct tegra210_bpmp {
+	void __iomem *atomics;
+	void __iomem *arb_sema;
+	struct irq_data *tx_irq_data;
+};
+
+static u32 bpmp_channel_status(struct tegra_bpmp *bpmp, unsigned int index)
+{
+	struct tegra210_bpmp *priv = bpmp->priv;
+
+	return __raw_readl(priv->arb_sema + STA_OFFSET) & CH_MASK(index);
+}
+
+static bool tegra210_bpmp_is_response_ready(struct tegra_bpmp_channel *channel)
+{
+	unsigned int index = channel->index;
+
+	return bpmp_channel_status(channel->bpmp, index) == MA_ACKD(index);
+}
+
+static bool tegra210_bpmp_is_request_ready(struct tegra_bpmp_channel *channel)
+{
+	unsigned int index = channel->index;
+
+	return bpmp_channel_status(channel->bpmp, index) == SL_SIGL(index);
+}
+
+static bool
+tegra210_bpmp_is_request_channel_free(struct tegra_bpmp_channel *channel)
+{
+	unsigned int index = channel->index;
+
+	return bpmp_channel_status(channel->bpmp, index) == MA_FREE(index);
+}
+
+static bool
+tegra210_bpmp_is_response_channel_free(struct tegra_bpmp_channel *channel)
+{
+	unsigned int index = channel->index;
+
+	return bpmp_channel_status(channel->bpmp, index) == SL_QUED(index);
+}
+
+static int tegra210_bpmp_post_request(struct tegra_bpmp_channel *channel)
+{
+	struct tegra210_bpmp *priv = channel->bpmp->priv;
+
+	__raw_writel(CH_MASK(channel->index), priv->arb_sema + CLR_OFFSET);
+
+	return 0;
+}
+
+static int tegra210_bpmp_post_response(struct tegra_bpmp_channel *channel)
+{
+	struct tegra210_bpmp *priv = channel->bpmp->priv;
+
+	__raw_writel(MA_ACKD(channel->index), priv->arb_sema + SET_OFFSET);
+
+	return 0;
+}
+
+static int tegra210_bpmp_ack_response(struct tegra_bpmp_channel *channel)
+{
+	struct tegra210_bpmp *priv = channel->bpmp->priv;
+
+	__raw_writel(MA_ACKD(channel->index) ^ MA_FREE(channel->index),
+		     priv->arb_sema + CLR_OFFSET);
+
+	return 0;
+}
+
+static int tegra210_bpmp_ack_request(struct tegra_bpmp_channel *channel)
+{
+	struct tegra210_bpmp *priv = channel->bpmp->priv;
+
+	__raw_writel(SL_QUED(channel->index), priv->arb_sema + SET_OFFSET);
+
+	return 0;
+}
+
+static int tegra210_bpmp_ring_doorbell(struct tegra_bpmp *bpmp)
+{
+	struct tegra210_bpmp *priv = bpmp->priv;
+	struct irq_data *irq_data = priv->tx_irq_data;
+
+	/*
+	 * Tegra Legacy Interrupt Controller (LIC) is used to notify BPMP of
+	 * available messages
+	 */
+	if (irq_data->chip->irq_retrigger)
+		return irq_data->chip->irq_retrigger(irq_data);
+
+	return -EINVAL;
+}
+
+static irqreturn_t rx_irq(int irq, void *data)
+{
+	struct tegra_bpmp *bpmp = data;
+
+	tegra_bpmp_handle_rx(bpmp);
+
+	return IRQ_HANDLED;
+}
+
+static int tegra210_bpmp_channel_init(struct tegra_bpmp_channel *channel,
+				      struct tegra_bpmp *bpmp,
+				      unsigned int index)
+{
+	struct tegra210_bpmp *priv = bpmp->priv;
+	u32 address;
+	void *p;
+
+	/* Retrieve channel base address from BPMP */
+	writel(index << TRIGGER_ID_SHIFT | TRIGGER_CMD_GET,
+	       priv->atomics + TRIGGER_OFFSET);
+	address = readl(priv->atomics + RESULT_OFFSET(index));
+
+	p = devm_ioremap(bpmp->dev, address, 0x80);
+	if (!p)
+		return -ENOMEM;
+
+	channel->ib = p;
+	channel->ob = p;
+	channel->index = index;
+	init_completion(&channel->completion);
+	channel->bpmp = bpmp;
+
+	return 0;
+}
+
+static int tegra210_bpmp_init(struct tegra_bpmp *bpmp)
+{
+	struct platform_device *pdev = to_platform_device(bpmp->dev);
+	struct tegra210_bpmp *priv;
+	struct resource *res;
+	unsigned int i;
+	int err;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	bpmp->priv = priv;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	priv->atomics = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->atomics))
+		return PTR_ERR(priv->atomics);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	priv->arb_sema = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->arb_sema))
+		return PTR_ERR(priv->arb_sema);
+
+	err = tegra210_bpmp_channel_init(bpmp->tx_channel, bpmp,
+					 bpmp->soc->channels.cpu_tx.offset);
+	if (err < 0)
+		return err;
+
+	err = tegra210_bpmp_channel_init(bpmp->rx_channel, bpmp,
+					 bpmp->soc->channels.cpu_rx.offset);
+	if (err < 0)
+		return err;
+
+	for (i = 0; i < bpmp->threaded.count; i++) {
+		unsigned int index = bpmp->soc->channels.thread.offset + i;
+
+		err = tegra210_bpmp_channel_init(&bpmp->threaded_channels[i],
+						 bpmp, index);
+		if (err < 0)
+			return err;
+	}
+
+	err = platform_get_irq_byname(pdev, "tx");
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to get TX IRQ: %d\n", err);
+		return err;
+	}
+
+	priv->tx_irq_data = irq_get_irq_data(err);
+	if (!priv->tx_irq_data) {
+		dev_err(&pdev->dev, "failed to get IRQ data for TX IRQ\n");
+		return err;
+	}
+
+	err = platform_get_irq_byname(pdev, "rx");
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to get rx IRQ: %d\n", err);
+		return err;
+	}
+
+	err = devm_request_irq(&pdev->dev, err, rx_irq,
+			       IRQF_NO_SUSPEND, dev_name(&pdev->dev), bpmp);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+const struct tegra_bpmp_ops tegra210_bpmp_ops = {
+	.init = tegra210_bpmp_init,
+	.is_response_ready = tegra210_bpmp_is_response_ready,
+	.is_request_ready = tegra210_bpmp_is_request_ready,
+	.ack_response = tegra210_bpmp_ack_response,
+	.ack_request = tegra210_bpmp_ack_request,
+	.is_response_channel_free = tegra210_bpmp_is_response_channel_free,
+	.is_request_channel_free = tegra210_bpmp_is_request_channel_free,
+	.post_response = tegra210_bpmp_post_response,
+	.post_request = tegra210_bpmp_post_request,
+	.ring_doorbell = tegra210_bpmp_ring_doorbell,
+};

drivers/firmware/tegra/bpmp.c

@@ -26,6 +26,8 @@
 #include <soc/tegra/bpmp-abi.h>
 #include <soc/tegra/ivc.h>
 
+#include "bpmp-private.h"
+
 #define MSG_ACK		BIT(0)
 #define MSG_RING	BIT(1)
 #define TAG_SZ		32
@@ -36,6 +38,14 @@ mbox_client_to_bpmp(struct mbox_client *client)
 	return container_of(client, struct tegra_bpmp, mbox.client);
 }
 
+static inline const struct tegra_bpmp_ops *
+channel_to_ops(struct tegra_bpmp_channel *channel)
+{
+	struct tegra_bpmp *bpmp = channel->bpmp;
+
+	return bpmp->soc->ops;
+}
+
 struct tegra_bpmp *tegra_bpmp_get(struct device *dev)
 {
 	struct platform_device *pdev;
@@ -96,22 +106,21 @@ static bool tegra_bpmp_message_valid(const struct tegra_bpmp_message *msg)
 	       (msg->rx.size == 0 || msg->rx.data);
 }
 
-static bool tegra_bpmp_master_acked(struct tegra_bpmp_channel *channel)
+static bool tegra_bpmp_is_response_ready(struct tegra_bpmp_channel *channel)
 {
-	void *frame;
+	const struct tegra_bpmp_ops *ops = channel_to_ops(channel);
 
-	frame = tegra_ivc_read_get_next_frame(channel->ivc);
-	if (IS_ERR(frame)) {
-		channel->ib = NULL;
-		return false;
-	}
+	return ops->is_response_ready(channel);
+}
 
-	channel->ib = frame;
+static bool tegra_bpmp_is_request_ready(struct tegra_bpmp_channel *channel)
+{
+	const struct tegra_bpmp_ops *ops = channel_to_ops(channel);
 
-	return true;
+	return ops->is_request_ready(channel);
 }
 
-static int tegra_bpmp_wait_ack(struct tegra_bpmp_channel *channel)
+static int tegra_bpmp_wait_response(struct tegra_bpmp_channel *channel)
 {
 	unsigned long timeout = channel->bpmp->soc->channels.cpu_tx.timeout;
 	ktime_t end;
@@ -119,29 +128,45 @@ static int tegra_bpmp_wait_ack(struct tegra_bpmp_channel *channel)
 	end = ktime_add_us(ktime_get(), timeout);
 
 	do {
-		if (tegra_bpmp_master_acked(channel))
+		if (tegra_bpmp_is_response_ready(channel))
 			return 0;
 	} while (ktime_before(ktime_get(), end));
 
 	return -ETIMEDOUT;
 }
 
-static bool tegra_bpmp_master_free(struct tegra_bpmp_channel *channel)
+static int tegra_bpmp_ack_response(struct tegra_bpmp_channel *channel)
 {
-	void *frame;
+	const struct tegra_bpmp_ops *ops = channel_to_ops(channel);
 
-	frame = tegra_ivc_write_get_next_frame(channel->ivc);
-	if (IS_ERR(frame)) {
-		channel->ob = NULL;
-		return false;
-	}
+	return ops->ack_response(channel);
+}
 
-	channel->ob = frame;
+static int tegra_bpmp_ack_request(struct tegra_bpmp_channel *channel)
+{
+	const struct tegra_bpmp_ops *ops = channel_to_ops(channel);
 
-	return true;
+	return ops->ack_request(channel);
 }
 
-static int tegra_bpmp_wait_master_free(struct tegra_bpmp_channel *channel)
+static bool
+tegra_bpmp_is_request_channel_free(struct tegra_bpmp_channel *channel)
+{
+	const struct tegra_bpmp_ops *ops = channel_to_ops(channel);
+
+	return ops->is_request_channel_free(channel);
+}
+
+static bool
+tegra_bpmp_is_response_channel_free(struct tegra_bpmp_channel *channel)
+{
+	const struct tegra_bpmp_ops *ops = channel_to_ops(channel);
+
+	return ops->is_response_channel_free(channel);
+}
+
+static int
+tegra_bpmp_wait_request_channel_free(struct tegra_bpmp_channel *channel)
 {
 	unsigned long timeout = channel->bpmp->soc->channels.cpu_tx.timeout;
 	ktime_t start, now;
@@ -149,7 +174,7 @@ static int tegra_bpmp_wait_master_free(struct tegra_bpmp_channel *channel)
 	start = ns_to_ktime(local_clock());
 
 	do {
-		if (tegra_bpmp_master_free(channel))
+		if (tegra_bpmp_is_request_channel_free(channel))
 			return 0;
 
 		now = ns_to_ktime(local_clock());
@@ -158,6 +183,25 @@ static int tegra_bpmp_wait_master_free(struct tegra_bpmp_channel *channel)
 	return -ETIMEDOUT;
 }
 
+static int tegra_bpmp_post_request(struct tegra_bpmp_channel *channel)
+{
+	const struct tegra_bpmp_ops *ops = channel_to_ops(channel);
+
+	return ops->post_request(channel);
+}
+
+static int tegra_bpmp_post_response(struct tegra_bpmp_channel *channel)
+{
+	const struct tegra_bpmp_ops *ops = channel_to_ops(channel);
+
+	return ops->post_response(channel);
+}
+
+static int tegra_bpmp_ring_doorbell(struct tegra_bpmp *bpmp)
+{
+	return bpmp->soc->ops->ring_doorbell(bpmp);
+}
+
 static ssize_t __tegra_bpmp_channel_read(struct tegra_bpmp_channel *channel,
 					 void *data, size_t size, int *ret)
 {
@@ -166,7 +210,7 @@ static ssize_t __tegra_bpmp_channel_read(struct tegra_bpmp_channel *channel,
 	if (data && size > 0)
 		memcpy(data, channel->ib->data, size);
 
-	err = tegra_ivc_read_advance(channel->ivc);
+	err = tegra_bpmp_ack_response(channel);
 	if (err < 0)
 		return err;
 
@@ -210,7 +254,7 @@ static ssize_t __tegra_bpmp_channel_write(struct tegra_bpmp_channel *channel,
 	if (data && size > 0)
 		memcpy(channel->ob->data, data, size);
 
-	return tegra_ivc_write_advance(channel->ivc);
+	return tegra_bpmp_post_request(channel);
 }
 
 static struct tegra_bpmp_channel *
@@ -238,7 +282,7 @@ tegra_bpmp_write_threaded(struct tegra_bpmp *bpmp, unsigned int mrq,
 
 	channel = &bpmp->threaded_channels[index];
 
-	if (!tegra_bpmp_master_free(channel)) {
+	if (!tegra_bpmp_is_request_channel_free(channel)) {
 		err = -EBUSY;
 		goto unlock;
 	}
@@ -270,7 +314,7 @@ static ssize_t tegra_bpmp_channel_write(struct tegra_bpmp_channel *channel,
 {
 	int err;
 
-	err = tegra_bpmp_wait_master_free(channel);
+	err = tegra_bpmp_wait_request_channel_free(channel);
 	if (err < 0)
 		return err;
 
@@ -302,13 +346,11 @@ int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,
 
 	spin_unlock(&bpmp->atomic_tx_lock);
 
-	err = mbox_send_message(bpmp->mbox.channel, NULL);
+	err = tegra_bpmp_ring_doorbell(bpmp);
 	if (err < 0)
 		return err;
 
-	mbox_client_txdone(bpmp->mbox.channel, 0);
-
-	err = tegra_bpmp_wait_ack(channel);
+	err = tegra_bpmp_wait_response(channel);
 	if (err < 0)
 		return err;
 
@@ -335,12 +377,10 @@ int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,
 	if (IS_ERR(channel))
 		return PTR_ERR(channel);
 
-	err = mbox_send_message(bpmp->mbox.channel, NULL);
+	err = tegra_bpmp_ring_doorbell(bpmp);
 	if (err < 0)
 		return err;
 
-	mbox_client_txdone(bpmp->mbox.channel, 0);
-
 	timeout = usecs_to_jiffies(bpmp->soc->channels.thread.timeout);
 
 	err = wait_for_completion_timeout(&channel->completion, timeout);
@@ -369,38 +409,34 @@ void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code,
 {
 	unsigned long flags = channel->ib->flags;
 	struct tegra_bpmp *bpmp = channel->bpmp;
-	struct tegra_bpmp_mb_data *frame;
 	int err;
 
 	if (WARN_ON(size > MSG_DATA_MIN_SZ))
 		return;
 
-	err = tegra_ivc_read_advance(channel->ivc);
+	err = tegra_bpmp_ack_request(channel);
 	if (WARN_ON(err < 0))
 		return;
 
 	if ((flags & MSG_ACK) == 0)
 		return;
 
-	frame = tegra_ivc_write_get_next_frame(channel->ivc);
-	if (WARN_ON(IS_ERR(frame)))
+	if (WARN_ON(!tegra_bpmp_is_response_channel_free(channel)))
 		return;
 
-	frame->code = code;
+	channel->ob->code = code;
 
 	if (data && size > 0)
-		memcpy(frame->data, data, size);
+		memcpy(channel->ob->data, data, size);
 
-	err = tegra_ivc_write_advance(channel->ivc);
+	err = tegra_bpmp_post_response(channel);
 	if (WARN_ON(err < 0))
 		return;
 
 	if (flags & MSG_RING) {
-		err = mbox_send_message(bpmp->mbox.channel, NULL);
+		err = tegra_bpmp_ring_doorbell(bpmp);
 		if (WARN_ON(err < 0))
 			return;
-
-		mbox_client_txdone(bpmp->mbox.channel, 0);
 	}
 }
 EXPORT_SYMBOL_GPL(tegra_bpmp_mrq_return);
@@ -627,9 +663,8 @@ static void tegra_bpmp_channel_signal(struct tegra_bpmp_channel *channel)
 	complete(&channel->completion);
 }
 
-static void tegra_bpmp_handle_rx(struct mbox_client *client, void *data)
+void tegra_bpmp_handle_rx(struct tegra_bpmp *bpmp)
 {
-	struct tegra_bpmp *bpmp = mbox_client_to_bpmp(client);
 	struct tegra_bpmp_channel *channel;
 	unsigned int i, count;
 	unsigned long *busy;
@@ -638,7 +673,7 @@ static void tegra_bpmp_handle_rx(struct mbox_client *client, void *data)
 	count = bpmp->soc->channels.thread.count;
 	busy = bpmp->threaded.busy;
 
-	if (tegra_bpmp_master_acked(channel))
+	if (tegra_bpmp_is_request_ready(channel))
 		tegra_bpmp_handle_mrq(bpmp, channel->ib->code, channel);
 
 	spin_lock(&bpmp->lock);
@@ -648,7 +683,7 @@ static void tegra_bpmp_handle_rx(struct mbox_client *client, void *data)
 
 		channel = &bpmp->threaded_channels[i];
 
-		if (tegra_bpmp_master_acked(channel)) {
+		if (tegra_bpmp_is_response_ready(channel)) {
 			tegra_bpmp_channel_signal(channel);
 			clear_bit(i, busy);
 		}
@@ -657,74 +692,9 @@ static void tegra_bpmp_handle_rx(struct mbox_client *client, void *data)
 	spin_unlock(&bpmp->lock);
 }
 
-static void tegra_bpmp_ivc_notify(struct tegra_ivc *ivc, void *data)
-{
-	struct tegra_bpmp *bpmp = data;
-	int err;
-
-	if (WARN_ON(bpmp->mbox.channel == NULL))
-		return;
-
-	err = mbox_send_message(bpmp->mbox.channel, NULL);
-	if (err < 0)
-		return;
-
-	mbox_client_txdone(bpmp->mbox.channel, 0);
-}
-
-static int tegra_bpmp_channel_init(struct tegra_bpmp_channel *channel,
-				   struct tegra_bpmp *bpmp,
-				   unsigned int index)
-{
-	size_t message_size, queue_size;
-	unsigned int offset;
-	int err;
-
-	channel->ivc = devm_kzalloc(bpmp->dev, sizeof(*channel->ivc),
-				    GFP_KERNEL);
-	if (!channel->ivc)
-		return -ENOMEM;
-
-	message_size = tegra_ivc_align(MSG_MIN_SZ);
-	queue_size = tegra_ivc_total_queue_size(message_size);
-	offset = queue_size * index;
-
-	err = tegra_ivc_init(channel->ivc, NULL,
-			     bpmp->rx.virt + offset, bpmp->rx.phys + offset,
-			     bpmp->tx.virt + offset, bpmp->tx.phys + offset,
-			     1, message_size, tegra_bpmp_ivc_notify,
-			     bpmp);
-	if (err < 0) {
-		dev_err(bpmp->dev, "failed to setup IVC for channel %u: %d\n",
-			index, err);
-		return err;
-	}
-
-	init_completion(&channel->completion);
-	channel->bpmp = bpmp;
-
-	return 0;
-}
-
-static void tegra_bpmp_channel_reset(struct tegra_bpmp_channel *channel)
-{
-	/* reset the channel state */
-	tegra_ivc_reset(channel->ivc);
-
-	/* sync the channel state with BPMP */
-	while (tegra_ivc_notified(channel->ivc))
-		;
-}
-
-static void tegra_bpmp_channel_cleanup(struct tegra_bpmp_channel *channel)
-{
-	tegra_ivc_cleanup(channel->ivc);
-}
-
 static int tegra_bpmp_probe(struct platform_device *pdev)
 {
 	struct tegra_bpmp *bpmp;
-	unsigned int i;
 	char tag[TAG_SZ];
 	size_t size;
 	int err;
@@ -736,32 +706,6 @@ static int tegra_bpmp_probe(struct platform_device *pdev)
 	bpmp->soc = of_device_get_match_data(&pdev->dev);
 	bpmp->dev = &pdev->dev;
 
-	bpmp->tx.pool = of_gen_pool_get(pdev->dev.of_node, "shmem", 0);
-	if (!bpmp->tx.pool) {
-		dev_err(&pdev->dev, "TX shmem pool not found\n");
-		return -ENOMEM;
-	}
-
-	bpmp->tx.virt = gen_pool_dma_alloc(bpmp->tx.pool, 4096, &bpmp->tx.phys);
-	if (!bpmp->tx.virt) {
-		dev_err(&pdev->dev, "failed to allocate from TX pool\n");
-		return -ENOMEM;
-	}
-
-	bpmp->rx.pool = of_gen_pool_get(pdev->dev.of_node, "shmem", 1);
-	if (!bpmp->rx.pool) {
-		dev_err(&pdev->dev, "RX shmem pool not found\n");
-		err = -ENOMEM;
-		goto free_tx;
-	}
-
-	bpmp->rx.virt = gen_pool_dma_alloc(bpmp->rx.pool, 4096, &bpmp->rx.phys);
-	if (!bpmp->rx.virt) {
-		dev_err(&pdev->dev, "failed to allocate from RX pool\n");
-		err = -ENOMEM;
-		goto free_tx;
-	}
-
 	INIT_LIST_HEAD(&bpmp->mrqs);
 	spin_lock_init(&bpmp->lock);
 
@@ -771,81 +715,38 @@ static int tegra_bpmp_probe(struct platform_device *pdev)
 	size = BITS_TO_LONGS(bpmp->threaded.count) * sizeof(long);
 
 	bpmp->threaded.allocated = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
-	if (!bpmp->threaded.allocated) {
-		err = -ENOMEM;
-		goto free_rx;
-	}
+	if (!bpmp->threaded.allocated)
+		return -ENOMEM;
 
 	bpmp->threaded.busy = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
-	if (!bpmp->threaded.busy) {
-		err = -ENOMEM;
-		goto free_rx;
-	}
+	if (!bpmp->threaded.busy)
+		return -ENOMEM;
 
 	spin_lock_init(&bpmp->atomic_tx_lock);
 	bpmp->tx_channel = devm_kzalloc(&pdev->dev, sizeof(*bpmp->tx_channel),
 					GFP_KERNEL);
-	if (!bpmp->tx_channel) {
-		err = -ENOMEM;
-		goto free_rx;
-	}
+	if (!bpmp->tx_channel)
+		return -ENOMEM;
 
 	bpmp->rx_channel = devm_kzalloc(&pdev->dev, sizeof(*bpmp->rx_channel),
 	                                GFP_KERNEL);
-	if (!bpmp->rx_channel) {
-		err = -ENOMEM;
-		goto free_rx;
-	}
+	if (!bpmp->rx_channel)
+		return -ENOMEM;
 
 	bpmp->threaded_channels = devm_kcalloc(&pdev->dev, bpmp->threaded.count,
 					       sizeof(*bpmp->threaded_channels),
 					       GFP_KERNEL);
-	if (!bpmp->threaded_channels) {
-		err = -ENOMEM;
-		goto free_rx;
-	}
-
-	err = tegra_bpmp_channel_init(bpmp->tx_channel, bpmp,
-				      bpmp->soc->channels.cpu_tx.offset);
-	if (err < 0)
-		goto free_rx;
+	if (!bpmp->threaded_channels)
+		return -ENOMEM;
 
-	err = tegra_bpmp_channel_init(bpmp->rx_channel, bpmp,
-				      bpmp->soc->channels.cpu_rx.offset);
+	err = bpmp->soc->ops->init(bpmp);
 	if (err < 0)
-		goto cleanup_tx_channel;
-
-	for (i = 0; i < bpmp->threaded.count; i++) {
-		err = tegra_bpmp_channel_init(
-			&bpmp->threaded_channels[i], bpmp,
-			bpmp->soc->channels.thread.offset + i);
-		if (err < 0)
-			goto cleanup_threaded_channels;
-	}
-
-	/* mbox registration */
-	bpmp->mbox.client.dev = &pdev->dev;
-	bpmp->mbox.client.rx_callback = tegra_bpmp_handle_rx;
-	bpmp->mbox.client.tx_block = false;
-	bpmp->mbox.client.knows_txdone = false;
-
-	bpmp->mbox.channel = mbox_request_channel(&bpmp->mbox.client, 0);
-	if (IS_ERR(bpmp->mbox.channel)) {
-		err = PTR_ERR(bpmp->mbox.channel);
-		dev_err(&pdev->dev, "failed to get HSP mailbox: %d\n", err);
-		goto cleanup_threaded_channels;
-	}
-
-	/* reset message channels */
-	tegra_bpmp_channel_reset(bpmp->tx_channel);
-	tegra_bpmp_channel_reset(bpmp->rx_channel);
-	for (i = 0; i < bpmp->threaded.count; i++)
-		tegra_bpmp_channel_reset(&bpmp->threaded_channels[i]);
+		return err;
 
 	err = tegra_bpmp_request_mrq(bpmp, MRQ_PING,
 				     tegra_bpmp_mrq_handle_ping, bpmp);
 	if (err < 0)
-		goto free_mbox;
+		goto deinit;
 
 	err = tegra_bpmp_ping(bpmp);
 	if (err < 0) {
@@ -867,17 +768,23 @@ static int tegra_bpmp_probe(struct platform_device *pdev)
 	if (err < 0)
 		goto free_mrq;
 
-	err = tegra_bpmp_init_clocks(bpmp);
-	if (err < 0)
-		goto free_mrq;
+	if (of_find_property(pdev->dev.of_node, "#clock-cells", NULL)) {
+		err = tegra_bpmp_init_clocks(bpmp);
+		if (err < 0)
+			goto free_mrq;
+	}
 
-	err = tegra_bpmp_init_resets(bpmp);
-	if (err < 0)
-		goto free_mrq;
+	if (of_find_property(pdev->dev.of_node, "#reset-cells", NULL)) {
+		err = tegra_bpmp_init_resets(bpmp);
+		if (err < 0)
+			goto free_mrq;
+	}
 
-	err = tegra_bpmp_init_powergates(bpmp);
-	if (err < 0)
-		goto free_mrq;
+	if (of_find_property(pdev->dev.of_node, "#power-domain-cells", NULL)) {
+		err = tegra_bpmp_init_powergates(bpmp);
+		if (err < 0)
+			goto free_mrq;
+	}
 
 	err = tegra_bpmp_init_debugfs(bpmp);
 	if (err < 0)
@@ -887,41 +794,27 @@ static int tegra_bpmp_probe(struct platform_device *pdev)
 
 free_mrq:
 	tegra_bpmp_free_mrq(bpmp, MRQ_PING, bpmp);
-free_mbox:
-	mbox_free_channel(bpmp->mbox.channel);
-cleanup_threaded_channels:
-	for (i = 0; i < bpmp->threaded.count; i++) {
-		if (bpmp->threaded_channels[i].bpmp)
-			tegra_bpmp_channel_cleanup(&bpmp->threaded_channels[i]);
-	}
+deinit:
+	if (bpmp->soc->ops->deinit)
+		bpmp->soc->ops->deinit(bpmp);
 
-	tegra_bpmp_channel_cleanup(bpmp->rx_channel);
-cleanup_tx_channel:
-	tegra_bpmp_channel_cleanup(bpmp->tx_channel);
-free_rx:
-	gen_pool_free(bpmp->rx.pool, (unsigned long)bpmp->rx.virt, 4096);
-free_tx:
-	gen_pool_free(bpmp->tx.pool, (unsigned long)bpmp->tx.virt, 4096);
 	return err;
 }
 
 static int __maybe_unused tegra_bpmp_resume(struct device *dev)
 {
 	struct tegra_bpmp *bpmp = dev_get_drvdata(dev);
-	unsigned int i;
-
-	/* reset message channels */
-	tegra_bpmp_channel_reset(bpmp->tx_channel);
-	tegra_bpmp_channel_reset(bpmp->rx_channel);
-
-	for (i = 0; i < bpmp->threaded.count; i++)
-		tegra_bpmp_channel_reset(&bpmp->threaded_channels[i]);
 
-	return 0;
+	if (bpmp->soc->ops->resume)
+		return bpmp->soc->ops->resume(bpmp);
+	else
+		return 0;
 }
 
 static SIMPLE_DEV_PM_OPS(tegra_bpmp_pm_ops, NULL, tegra_bpmp_resume);
 
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC) || \
+    IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
 static const struct tegra_bpmp_soc tegra186_soc = {
 	.channels = {
 		.cpu_tx = {
@@ -938,11 +831,42 @@ static const struct tegra_bpmp_soc tegra186_soc = {
 			.timeout = 0,
 		},
 	},
+	.ops = &tegra186_bpmp_ops,
 	.num_resets = 193,
 };
+#endif
+
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
+static const struct tegra_bpmp_soc tegra210_soc = {
+	.channels = {
+		.cpu_tx = {
+			.offset = 0,
+			.count = 1,
+			.timeout = 60 * USEC_PER_SEC,
+		},
+		.thread = {
+			.offset = 4,
+			.count = 1,
+			.timeout = 600 * USEC_PER_SEC,
+		},
+		.cpu_rx = {
+			.offset = 8,
+			.count = 1,
+			.timeout = 0,
+		},
+	},
+	.ops = &tegra210_bpmp_ops,
+};
+#endif
 
 static const struct of_device_id tegra_bpmp_match[] = {
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC) || \
+    IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
 	{ .compatible = "nvidia,tegra186-bpmp", .data = &tegra186_soc },
+#endif
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
+	{ .compatible = "nvidia,tegra210-bpmp", .data = &tegra210_soc },
+#endif
 	{ }
 };
 

drivers/firmware/ti_sci.c

@@ -146,25 +146,8 @@ static int ti_sci_debug_show(struct seq_file *s, void *unused)
 	return 0;
 }
 
-/**
- * ti_sci_debug_open() - debug file open
- * @inode:	inode pointer
- * @file:	file pointer
- *
- * Return: result of single_open
- */
-static int ti_sci_debug_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, ti_sci_debug_show, inode->i_private);
-}
-
-/* log file operations */
-static const struct file_operations ti_sci_debug_fops = {
-	.open = ti_sci_debug_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
+/* Provide the log file operations interface*/
+DEFINE_SHOW_ATTRIBUTE(ti_sci_debug);
 
 /**
  * ti_sci_debugfs_create() - Create log debug file

drivers/firmware/xilinx/Kconfig

@@ -6,6 +6,7 @@ menu "Zynq MPSoC Firmware Drivers"
 
 config ZYNQMP_FIRMWARE
 	bool "Enable Xilinx Zynq MPSoC firmware interface"
+	select MFD_CORE
 	help
 	  Firmware interface driver is used by different
 	  drivers to communicate with the firmware for

drivers/firmware/xilinx/zynqmp.c

@@ -14,6 +14,7 @@
 #include <linux/compiler.h>
 #include <linux/device.h>
 #include <linux/init.h>
+#include <linux/mfd/core.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
@@ -23,6 +24,12 @@
 #include <linux/firmware/xlnx-zynqmp.h>
 #include "zynqmp-debug.h"
 
+static const struct mfd_cell firmware_devs[] = {
+	{
+		.name = "zynqmp_power_controller",
+	},
+};
+
 /**
  * zynqmp_pm_ret_code() - Convert PMU-FW error codes to Linux error codes
  * @ret_status:		PMUFW return code
@@ -186,6 +193,29 @@ static int zynqmp_pm_get_api_version(u32 *version)
 	return ret;
 }
 
+/**
+ * zynqmp_pm_get_chipid - Get silicon ID registers
+ * @idcode:     IDCODE register
+ * @version:    version register
+ *
+ * Return:      Returns the status of the operation and the idcode and version
+ *              registers in @idcode and @version.
+ */
+static int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
+{
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	int ret;
+
+	if (!idcode || !version)
+		return -EINVAL;
+
+	ret = zynqmp_pm_invoke_fn(PM_GET_CHIPID, 0, 0, 0, 0, ret_payload);
+	*idcode = ret_payload[1];
+	*version = ret_payload[2];
+
+	return ret;
+}
+
 /**
  * zynqmp_pm_get_trustzone_version() - Get secure trustzone firmware version
  * @version:	Returned version value
@@ -469,8 +499,129 @@ static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
 				   arg1, arg2, out);
 }
 
+/**
+ * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
+ * @reset:		Reset to be configured
+ * @assert_flag:	Flag stating should reset be asserted (1) or
+ *			released (0)
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
+				  const enum zynqmp_pm_reset_action assert_flag)
+{
+	return zynqmp_pm_invoke_fn(PM_RESET_ASSERT, reset, assert_flag,
+				   0, 0, NULL);
+}
+
+/**
+ * zynqmp_pm_reset_get_status - Get status of the reset
+ * @reset:      Reset whose status should be returned
+ * @status:     Returned status
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
+				      u32 *status)
+{
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	int ret;
+
+	if (!status)
+		return -EINVAL;
+
+	ret = zynqmp_pm_invoke_fn(PM_RESET_GET_STATUS, reset, 0,
+				  0, 0, ret_payload);
+	*status = ret_payload[1];
+
+	return ret;
+}
+
+/**
+ * zynqmp_pm_init_finalize() - PM call to inform firmware that the caller
+ *			       master has initialized its own power management
+ *
+ * This API function is to be used for notify the power management controller
+ * about the completed power management initialization.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_init_finalize(void)
+{
+	return zynqmp_pm_invoke_fn(PM_PM_INIT_FINALIZE, 0, 0, 0, 0, NULL);
+}
+
+/**
+ * zynqmp_pm_set_suspend_mode()	- Set system suspend mode
+ * @mode:	Mode to set for system suspend
+ *
+ * This API function is used to set mode of system suspend.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_set_suspend_mode(u32 mode)
+{
+	return zynqmp_pm_invoke_fn(PM_SET_SUSPEND_MODE, mode, 0, 0, 0, NULL);
+}
+
+/**
+ * zynqmp_pm_request_node() - Request a node with specific capabilities
+ * @node:		Node ID of the slave
+ * @capabilities:	Requested capabilities of the slave
+ * @qos:		Quality of service (not supported)
+ * @ack:		Flag to specify whether acknowledge is requested
+ *
+ * This function is used by master to request particular node from firmware.
+ * Every master must request node before using it.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_request_node(const u32 node, const u32 capabilities,
+				  const u32 qos,
+				  const enum zynqmp_pm_request_ack ack)
+{
+	return zynqmp_pm_invoke_fn(PM_REQUEST_NODE, node, capabilities,
+				   qos, ack, NULL);
+}
+
+/**
+ * zynqmp_pm_release_node() - Release a node
+ * @node:	Node ID of the slave
+ *
+ * This function is used by master to inform firmware that master
+ * has released node. Once released, master must not use that node
+ * without re-request.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_release_node(const u32 node)
+{
+	return zynqmp_pm_invoke_fn(PM_RELEASE_NODE, node, 0, 0, 0, NULL);
+}
+
+/**
+ * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves
+ * @node:		Node ID of the slave
+ * @capabilities:	Requested capabilities of the slave
+ * @qos:		Quality of service (not supported)
+ * @ack:		Flag to specify whether acknowledge is requested
+ *
+ * This API function is to be used for slaves a PU already has requested
+ * to change its capabilities.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
+				     const u32 qos,
+				     const enum zynqmp_pm_request_ack ack)
+{
+	return zynqmp_pm_invoke_fn(PM_SET_REQUIREMENT, node, capabilities,
+				   qos, ack, NULL);
+}
+
 static const struct zynqmp_eemi_ops eemi_ops = {
 	.get_api_version = zynqmp_pm_get_api_version,
+	.get_chipid = zynqmp_pm_get_chipid,
 	.query_data = zynqmp_pm_query_data,
 	.clock_enable = zynqmp_pm_clock_enable,
 	.clock_disable = zynqmp_pm_clock_disable,
@@ -482,6 +633,13 @@ static const struct zynqmp_eemi_ops eemi_ops = {
 	.clock_setparent = zynqmp_pm_clock_setparent,
 	.clock_getparent = zynqmp_pm_clock_getparent,
 	.ioctl = zynqmp_pm_ioctl,
+	.reset_assert = zynqmp_pm_reset_assert,
+	.reset_get_status = zynqmp_pm_reset_get_status,
+	.init_finalize = zynqmp_pm_init_finalize,
+	.set_suspend_mode = zynqmp_pm_set_suspend_mode,
+	.request_node = zynqmp_pm_request_node,
+	.release_node = zynqmp_pm_release_node,
+	.set_requirement = zynqmp_pm_set_requirement,
 };
 
 /**
@@ -538,11 +696,19 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
 
 	zynqmp_pm_api_debugfs_init();
 
+	ret = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, firmware_devs,
+			      ARRAY_SIZE(firmware_devs), NULL, 0, NULL);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to add MFD devices %d\n", ret);
+		return ret;
+	}
+
 	return of_platform_populate(dev->of_node, NULL, NULL, dev);
 }
 
 static int zynqmp_firmware_remove(struct platform_device *pdev)
 {
+	mfd_remove_devices(&pdev->dev);
 	zynqmp_pm_api_debugfs_exit();
 
 	return 0;

drivers/mfd/Makefile

@@ -10,6 +10,7 @@ obj-$(CONFIG_MFD_88PM805)	+= 88pm805.o 88pm80x.o
 obj-$(CONFIG_MFD_ACT8945A)	+= act8945a.o
 obj-$(CONFIG_MFD_SM501)		+= sm501.o
 obj-$(CONFIG_MFD_ASIC3)		+= asic3.o tmio_core.o
+obj-$(CONFIG_ARCH_BCM2835)	+= bcm2835-pm.o
 obj-$(CONFIG_MFD_BCM590XX)	+= bcm590xx.o
 obj-$(CONFIG_MFD_BD9571MWV)	+= bd9571mwv.o
 cros_ec_core-objs		:= cros_ec.o

drivers/mfd/bcm2835-pm.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * PM MFD driver for Broadcom BCM2835
+ *
+ * This driver binds to the PM block and creates the MFD device for
+ * the WDT and power drivers.
+ */
+
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/mfd/bcm2835-pm.h>
+#include <linux/mfd/core.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include <linux/watchdog.h>
+
+static const struct mfd_cell bcm2835_pm_devs[] = {
+	{ .name = "bcm2835-wdt" },
+};
+
+static const struct mfd_cell bcm2835_power_devs[] = {
+	{ .name = "bcm2835-power" },
+};
+
+static int bcm2835_pm_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct device *dev = &pdev->dev;
+	struct bcm2835_pm *pm;
+	int ret;
+
+	pm = devm_kzalloc(dev, sizeof(*pm), GFP_KERNEL);
+	if (!pm)
+		return -ENOMEM;
+	platform_set_drvdata(pdev, pm);
+
+	pm->dev = dev;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	pm->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(pm->base))
+		return PTR_ERR(pm->base);
+
+	ret = devm_mfd_add_devices(dev, -1,
+				   bcm2835_pm_devs, ARRAY_SIZE(bcm2835_pm_devs),
+				   NULL, 0, NULL);
+	if (ret)
+		return ret;
+
+	/* We'll use the presence of the AXI ASB regs in the
+	 * bcm2835-pm binding as the key for whether we can reference
+	 * the full PM register range and support power domains.
+	 */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	if (res) {
+		pm->asb = devm_ioremap_resource(dev, res);
+		if (IS_ERR(pm->asb))
+			return PTR_ERR(pm->asb);
+
+		ret = devm_mfd_add_devices(dev, -1,
+					   bcm2835_power_devs,
+					   ARRAY_SIZE(bcm2835_power_devs),
+					   NULL, 0, NULL);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id bcm2835_pm_of_match[] = {
+	{ .compatible = "brcm,bcm2835-pm-wdt", },
+	{ .compatible = "brcm,bcm2835-pm", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match);
+
+static struct platform_driver bcm2835_pm_driver = {
+	.probe		= bcm2835_pm_probe,
+	.driver = {
+		.name =	"bcm2835-pm",
+		.of_match_table = bcm2835_pm_of_match,
+	},
+};
+module_platform_driver(bcm2835_pm_driver);
+
+MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
+MODULE_DESCRIPTION("Driver for Broadcom BCM2835 PM MFD");
+MODULE_LICENSE("GPL");

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c

@@ -2468,9 +2468,14 @@ static int setup_rx_flow(struct dpaa2_eth_priv *priv,
 	queue.destination.type = DPNI_DEST_DPCON;
 	queue.destination.priority = 1;
 	queue.user_context = (u64)(uintptr_t)fq;
+	queue.flc.stash_control = 1;
+	queue.flc.value &= 0xFFFFFFFFFFFFFFC0;
+	/* 01 01 00 - data, annotation, flow context */
+	queue.flc.value |= 0x14;
 	err = dpni_set_queue(priv->mc_io, 0, priv->mc_token,
 			     DPNI_QUEUE_RX, 0, fq->flowid,
-			     DPNI_QUEUE_OPT_USER_CTX | DPNI_QUEUE_OPT_DEST,
+			     DPNI_QUEUE_OPT_USER_CTX | DPNI_QUEUE_OPT_DEST |
+			     DPNI_QUEUE_OPT_FLC,
 			     &queue);
 	if (err) {
 		dev_err(dev, "dpni_set_queue(RX) failed\n");

drivers/nvmem/Kconfig

@@ -192,4 +192,14 @@ config SC27XX_EFUSE
 	  This driver can also be built as a module. If so, the module
 	  will be called nvmem-sc27xx-efuse.
 
+config NVMEM_ZYNQMP
+	bool "Xilinx ZYNQMP SoC nvmem firmware support"
+	depends on ARCH_ZYNQMP
+	help
+	  This is a driver to access hardware related data like
+	  soc revision, IDCODE... etc by using the firmware
+	  interface.
+
+	  If sure, say yes. If unsure, say no.
+
 endif

drivers/nvmem/Makefile

@@ -41,3 +41,5 @@ obj-$(CONFIG_RAVE_SP_EEPROM)	+= nvmem-rave-sp-eeprom.o
 nvmem-rave-sp-eeprom-y		:= rave-sp-eeprom.o
 obj-$(CONFIG_SC27XX_EFUSE)	+= nvmem-sc27xx-efuse.o
 nvmem-sc27xx-efuse-y		:= sc27xx-efuse.o
+obj-$(CONFIG_NVMEM_ZYNQMP)	+= nvmem_zynqmp_nvmem.o
+nvmem_zynqmp_nvmem-y		:= zynqmp_nvmem.o

drivers/nvmem/zynqmp_nvmem.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Xilinx, Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/nvmem-provider.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/firmware/xlnx-zynqmp.h>
+
+#define SILICON_REVISION_MASK 0xF
+
+struct zynqmp_nvmem_data {
+	struct device *dev;
+	struct nvmem_device *nvmem;
+};
+
+static int zynqmp_nvmem_read(void *context, unsigned int offset,
+			     void *val, size_t bytes)
+{
+	int ret;
+	int idcode, version;
+	struct zynqmp_nvmem_data *priv = context;
+
+	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
+
+	if (!eemi_ops || !eemi_ops->get_chipid)
+		return -ENXIO;
+
+	ret = eemi_ops->get_chipid(&idcode, &version);
+	if (ret < 0)
+		return ret;
+
+	dev_dbg(priv->dev, "Read chipid val %x %x\n", idcode, version);
+	*(int *)val = version & SILICON_REVISION_MASK;
+
+	return 0;
+}
+
+static struct nvmem_config econfig = {
+	.name = "zynqmp-nvmem",
+	.owner = THIS_MODULE,
+	.word_size = 1,
+	.size = 1,
+	.read_only = true,
+};
+
+static const struct of_device_id zynqmp_nvmem_match[] = {
+	{ .compatible = "xlnx,zynqmp-nvmem-fw", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, zynqmp_nvmem_match);
+
+static int zynqmp_nvmem_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct zynqmp_nvmem_data *priv;
+
+	priv = devm_kzalloc(dev, sizeof(struct zynqmp_nvmem_data), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->dev = dev;
+	econfig.dev = dev;
+	econfig.reg_read = zynqmp_nvmem_read;
+	econfig.priv = priv;
+
+	priv->nvmem = devm_nvmem_register(dev, &econfig);
+
+	return PTR_ERR_OR_ZERO(priv->nvmem);
+}
+
+static struct platform_driver zynqmp_nvmem_driver = {
+	.probe = zynqmp_nvmem_probe,
+	.driver = {
+		.name = "zynqmp-nvmem",
+		.of_match_table = zynqmp_nvmem_match,
+	},
+};
+
+module_platform_driver(zynqmp_nvmem_driver);
+
+MODULE_AUTHOR("Michal Simek <michal.simek@xilinx.com>, Nava kishore Manne <navam@xilinx.com>");
+MODULE_DESCRIPTION("ZynqMP NVMEM driver");
+MODULE_LICENSE("GPL");

drivers/opp/core.c

@@ -130,6 +130,24 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq);
 
+/**
+ * dev_pm_opp_get_level() - Gets the level corresponding to an available opp
+ * @opp:	opp for which level value has to be returned for
+ *
+ * Return: level read from device tree corresponding to the opp, else
+ * return 0.
+ */
+unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
+{
+	if (IS_ERR_OR_NULL(opp) || !opp->available) {
+		pr_err("%s: Invalid parameters\n", __func__);
+		return 0;
+	}
+
+	return opp->level;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_get_level);
+
 /**
  * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
  * @opp: opp for which turbo mode is being verified

drivers/opp/of.c

@@ -594,6 +594,8 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table,
 		new_opp->rate = (unsigned long)rate;
 	}
 
+	of_property_read_u32(np, "opp-level", &new_opp->level);
+
 	/* Check if the OPP supports hardware's hierarchy of versions or not */
 	if (!_opp_is_supported(dev, opp_table, np)) {
 		dev_dbg(dev, "OPP not supported by hardware: %llu\n", rate);

drivers/opp/opp.h

@@ -60,6 +60,7 @@ extern struct list_head opp_tables;
  * @suspend:	true if suspend OPP
  * @pstate: Device's power domain's performance state.
  * @rate:	Frequency in hertz
+ * @level:	Performance level
  * @supplies:	Power supplies voltage/current values
  * @clock_latency_ns: Latency (in nanoseconds) of switching to this OPP's
  *		frequency from any other OPP's frequency.
@@ -80,6 +81,7 @@ struct dev_pm_opp {
 	bool suspend;
 	unsigned int pstate;
 	unsigned long rate;
+	unsigned int level;
 
 	struct dev_pm_opp_supply *supplies;
 

drivers/reset/Kconfig

@@ -40,6 +40,14 @@ config RESET_BERLIN
 	help
 	  This enables the reset controller driver for Marvell Berlin SoCs.
 
+config RESET_BRCMSTB
+	tristate "Broadcom STB reset controller"
+	depends on ARCH_BRCMSTB || COMPILE_TEST
+	default ARCH_BRCMSTB
+	help
+	  This enables the reset controller driver for Broadcom STB SoCs using
+	  a SUN_TOP_CTRL_SW_INIT style controller.
+
 config RESET_HSDK
 	bool "Synopsys HSDK Reset Driver"
 	depends on HAS_IOMEM
@@ -48,9 +56,9 @@ config RESET_HSDK
 	  This enables the reset controller driver for HSDK board.
 
 config RESET_IMX7
-	bool "i.MX7 Reset Driver" if COMPILE_TEST
+	bool "i.MX7/8 Reset Driver" if COMPILE_TEST
 	depends on HAS_IOMEM
-	default SOC_IMX7D
+	default SOC_IMX7D || (ARM64 && ARCH_MXC)
 	select MFD_SYSCON
 	help
 	  This enables the reset controller driver for i.MX7 SoCs.

drivers/reset/Makefile

@@ -7,6 +7,7 @@ obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
 obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
 obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
 obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
+obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
 obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o
 obj-$(CONFIG_RESET_IMX7) += reset-imx7.o
 obj-$(CONFIG_RESET_LANTIQ) += reset-lantiq.o
@@ -26,4 +27,5 @@ obj-$(CONFIG_RESET_TI_SYSCON) += reset-ti-syscon.o
 obj-$(CONFIG_RESET_UNIPHIER) += reset-uniphier.o
 obj-$(CONFIG_RESET_UNIPHIER_GLUE) += reset-uniphier-glue.o
 obj-$(CONFIG_RESET_ZYNQ) += reset-zynq.o
+obj-$(CONFIG_ARCH_ZYNQMP) += reset-zynqmp.o
 

drivers/reset/reset-brcmstb.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Broadcom STB generic reset controller for SW_INIT style reset controller
+ *
+ * Author: Florian Fainelli <f.fainelli@gmail.com>
+ * Copyright (C) 2018 Broadcom
+ */
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/types.h>
+
+struct brcmstb_reset {
+	void __iomem *base;
+	struct reset_controller_dev rcdev;
+};
+
+#define SW_INIT_SET		0x00
+#define SW_INIT_CLEAR		0x04
+#define SW_INIT_STATUS		0x08
+
+#define SW_INIT_BIT(id)		BIT((id) & 0x1f)
+#define SW_INIT_BANK(id)	((id) >> 5)
+
+/* A full bank contains extra registers that we are not utilizing but still
+ * qualify as a single bank.
+ */
+#define SW_INIT_BANK_SIZE	0x18
+
+static inline
+struct brcmstb_reset *to_brcmstb(struct reset_controller_dev *rcdev)
+{
+	return container_of(rcdev, struct brcmstb_reset, rcdev);
+}
+
+static int brcmstb_reset_assert(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	unsigned int off = SW_INIT_BANK(id) * SW_INIT_BANK_SIZE;
+	struct brcmstb_reset *priv = to_brcmstb(rcdev);
+
+	writel_relaxed(SW_INIT_BIT(id), priv->base + off + SW_INIT_SET);
+
+	return 0;
+}
+
+static int brcmstb_reset_deassert(struct reset_controller_dev *rcdev,
+				  unsigned long id)
+{
+	unsigned int off = SW_INIT_BANK(id) * SW_INIT_BANK_SIZE;
+	struct brcmstb_reset *priv = to_brcmstb(rcdev);
+
+	writel_relaxed(SW_INIT_BIT(id), priv->base + off + SW_INIT_CLEAR);
+	/* Maximum reset delay after de-asserting a line and seeing block
+	 * operation is typically 14us for the worst case, build some slack
+	 * here.
+	 */
+	usleep_range(100, 200);
+
+	return 0;
+}
+
+static int brcmstb_reset_status(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	unsigned int off = SW_INIT_BANK(id) * SW_INIT_BANK_SIZE;
+	struct brcmstb_reset *priv = to_brcmstb(rcdev);
+
+	return readl_relaxed(priv->base + off + SW_INIT_STATUS) &
+			     SW_INIT_BIT(id);
+}
+
+static const struct reset_control_ops brcmstb_reset_ops = {
+	.assert	= brcmstb_reset_assert,
+	.deassert = brcmstb_reset_deassert,
+	.status = brcmstb_reset_status,
+};
+
+static int brcmstb_reset_probe(struct platform_device *pdev)
+{
+	struct device *kdev = &pdev->dev;
+	struct brcmstb_reset *priv;
+	struct resource *res;
+
+	priv = devm_kzalloc(kdev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!IS_ALIGNED(res->start, SW_INIT_BANK_SIZE) ||
+	    !IS_ALIGNED(resource_size(res), SW_INIT_BANK_SIZE)) {
+		dev_err(kdev, "incorrect register range\n");
+		return -EINVAL;
+	}
+
+	priv->base = devm_ioremap_resource(kdev, res);
+	if (IS_ERR(priv->base))
+		return PTR_ERR(priv->base);
+
+	dev_set_drvdata(kdev, priv);
+
+	priv->rcdev.owner = THIS_MODULE;
+	priv->rcdev.nr_resets = DIV_ROUND_DOWN_ULL(resource_size(res),
+						   SW_INIT_BANK_SIZE) * 32;
+	priv->rcdev.ops = &brcmstb_reset_ops;
+	priv->rcdev.of_node = kdev->of_node;
+	/* Use defaults: 1 cell and simple xlate function */
+
+	return devm_reset_controller_register(kdev, &priv->rcdev);
+}
+
+static const struct of_device_id brcmstb_reset_of_match[] = {
+	{ .compatible = "brcm,brcmstb-reset" },
+	{ /* sentinel */ }
+};
+
+static struct platform_driver brcmstb_reset_driver = {
+	.probe	= brcmstb_reset_probe,
+	.driver	= {
+		.name = "brcmstb-reset",
+		.of_match_table = brcmstb_reset_of_match,
+	},
+};
+module_platform_driver(brcmstb_reset_driver);
+
+MODULE_AUTHOR("Broadcom");
+MODULE_DESCRIPTION("Broadcom STB reset controller");
+MODULE_LICENSE("GPL");

drivers/reset/reset-imx7.c

@@ -17,14 +17,27 @@
 
 #include <linux/mfd/syscon.h>
 #include <linux/mod_devicetable.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/reset-controller.h>
 #include <linux/regmap.h>
 #include <dt-bindings/reset/imx7-reset.h>
+#include <dt-bindings/reset/imx8mq-reset.h>
+
+struct imx7_src_signal {
+	unsigned int offset, bit;
+};
+
+struct imx7_src_variant {
+	const struct imx7_src_signal *signals;
+	unsigned int signals_num;
+	struct reset_control_ops ops;
+};
 
 struct imx7_src {
 	struct reset_controller_dev rcdev;
 	struct regmap *regmap;
+	const struct imx7_src_signal *signals;
 };
 
 enum imx7_src_registers {
@@ -39,9 +52,14 @@ enum imx7_src_registers {
 	SRC_DDRC_RCR		= 0x1000,
 };
 
-struct imx7_src_signal {
-	unsigned int offset, bit;
-};
+static int imx7_reset_update(struct imx7_src *imx7src,
+			     unsigned long id, unsigned int value)
+{
+	const struct imx7_src_signal *signal = &imx7src->signals[id];
+
+	return regmap_update_bits(imx7src->regmap,
+				  signal->offset, signal->bit, value);
+}
 
 static const struct imx7_src_signal imx7_src_signals[IMX7_RESET_NUM] = {
 	[IMX7_RESET_A7_CORE_POR_RESET0] = { SRC_A7RCR0, BIT(0) },
@@ -81,8 +99,8 @@ static int imx7_reset_set(struct reset_controller_dev *rcdev,
 			  unsigned long id, bool assert)
 {
 	struct imx7_src *imx7src = to_imx7_src(rcdev);
-	const struct imx7_src_signal *signal = &imx7_src_signals[id];
-	unsigned int value = assert ? signal->bit : 0;
+	const unsigned int bit = imx7src->signals[id].bit;
+	unsigned int value = assert ? bit : 0;
 
 	switch (id) {
 	case IMX7_RESET_PCIEPHY:
@@ -95,12 +113,11 @@ static int imx7_reset_set(struct reset_controller_dev *rcdev,
 		break;
 
 	case IMX7_RESET_PCIE_CTRL_APPS_EN:
-		value = (assert) ? 0 : signal->bit;
+		value = assert ? 0 : bit;
 		break;
 	}
 
-	return regmap_update_bits(imx7src->regmap,
-				  signal->offset, signal->bit, value);
+	return imx7_reset_update(imx7src, id, value);
 }
 
 static int imx7_reset_assert(struct reset_controller_dev *rcdev,
@@ -115,9 +132,133 @@ static int imx7_reset_deassert(struct reset_controller_dev *rcdev,
 	return imx7_reset_set(rcdev, id, false);
 }
 
-static const struct reset_control_ops imx7_reset_ops = {
-	.assert		= imx7_reset_assert,
-	.deassert	= imx7_reset_deassert,
+static const struct imx7_src_variant variant_imx7 = {
+	.signals = imx7_src_signals,
+	.signals_num = ARRAY_SIZE(imx7_src_signals),
+	.ops = {
+		.assert   = imx7_reset_assert,
+		.deassert = imx7_reset_deassert,
+	},
+};
+
+enum imx8mq_src_registers {
+	SRC_A53RCR0		= 0x0004,
+	SRC_HDMI_RCR		= 0x0030,
+	SRC_DISP_RCR		= 0x0034,
+	SRC_GPU_RCR		= 0x0040,
+	SRC_VPU_RCR		= 0x0044,
+	SRC_PCIE2_RCR		= 0x0048,
+	SRC_MIPIPHY1_RCR	= 0x004c,
+	SRC_MIPIPHY2_RCR	= 0x0050,
+	SRC_DDRC2_RCR		= 0x1004,
+};
+
+static const struct imx7_src_signal imx8mq_src_signals[IMX8MQ_RESET_NUM] = {
+	[IMX8MQ_RESET_A53_CORE_POR_RESET0]	= { SRC_A53RCR0, BIT(0) },
+	[IMX8MQ_RESET_A53_CORE_POR_RESET1]	= { SRC_A53RCR0, BIT(1) },
+	[IMX8MQ_RESET_A53_CORE_POR_RESET2]	= { SRC_A53RCR0, BIT(2) },
+	[IMX8MQ_RESET_A53_CORE_POR_RESET3]	= { SRC_A53RCR0, BIT(3) },
+	[IMX8MQ_RESET_A53_CORE_RESET0]		= { SRC_A53RCR0, BIT(4) },
+	[IMX8MQ_RESET_A53_CORE_RESET1]		= { SRC_A53RCR0, BIT(5) },
+	[IMX8MQ_RESET_A53_CORE_RESET2]		= { SRC_A53RCR0, BIT(6) },
+	[IMX8MQ_RESET_A53_CORE_RESET3]		= { SRC_A53RCR0, BIT(7) },
+	[IMX8MQ_RESET_A53_DBG_RESET0]		= { SRC_A53RCR0, BIT(8) },
+	[IMX8MQ_RESET_A53_DBG_RESET1]		= { SRC_A53RCR0, BIT(9) },
+	[IMX8MQ_RESET_A53_DBG_RESET2]		= { SRC_A53RCR0, BIT(10) },
+	[IMX8MQ_RESET_A53_DBG_RESET3]		= { SRC_A53RCR0, BIT(11) },
+	[IMX8MQ_RESET_A53_ETM_RESET0]		= { SRC_A53RCR0, BIT(12) },
+	[IMX8MQ_RESET_A53_ETM_RESET1]		= { SRC_A53RCR0, BIT(13) },
+	[IMX8MQ_RESET_A53_ETM_RESET2]		= { SRC_A53RCR0, BIT(14) },
+	[IMX8MQ_RESET_A53_ETM_RESET3]		= { SRC_A53RCR0, BIT(15) },
+	[IMX8MQ_RESET_A53_SOC_DBG_RESET]	= { SRC_A53RCR0, BIT(20) },
+	[IMX8MQ_RESET_A53_L2RESET]		= { SRC_A53RCR0, BIT(21) },
+	[IMX8MQ_RESET_SW_NON_SCLR_M4C_RST]	= { SRC_M4RCR, BIT(0) },
+	[IMX8MQ_RESET_OTG1_PHY_RESET]		= { SRC_USBOPHY1_RCR, BIT(0) },
+	[IMX8MQ_RESET_OTG2_PHY_RESET]		= { SRC_USBOPHY2_RCR, BIT(0) },
+	[IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N]	= { SRC_MIPIPHY_RCR, BIT(1) },
+	[IMX8MQ_RESET_MIPI_DSI_RESET_N]		= { SRC_MIPIPHY_RCR, BIT(2) },
+	[IMX8MQ_RESET_MIPI_DIS_DPI_RESET_N]	= { SRC_MIPIPHY_RCR, BIT(3) },
+	[IMX8MQ_RESET_MIPI_DIS_ESC_RESET_N]	= { SRC_MIPIPHY_RCR, BIT(4) },
+	[IMX8MQ_RESET_MIPI_DIS_PCLK_RESET_N]	= { SRC_MIPIPHY_RCR, BIT(5) },
+	[IMX8MQ_RESET_PCIEPHY]			= { SRC_PCIEPHY_RCR,
+						    BIT(2) | BIT(1) },
+	[IMX8MQ_RESET_PCIEPHY_PERST]		= { SRC_PCIEPHY_RCR, BIT(3) },
+	[IMX8MQ_RESET_PCIE_CTRL_APPS_EN]	= { SRC_PCIEPHY_RCR, BIT(6) },
+	[IMX8MQ_RESET_PCIE_CTRL_APPS_TURNOFF]	= { SRC_PCIEPHY_RCR, BIT(11) },
+	[IMX8MQ_RESET_HDMI_PHY_APB_RESET]	= { SRC_HDMI_RCR, BIT(0) },
+	[IMX8MQ_RESET_DISP_RESET]		= { SRC_DISP_RCR, BIT(0) },
+	[IMX8MQ_RESET_GPU_RESET]		= { SRC_GPU_RCR, BIT(0) },
+	[IMX8MQ_RESET_VPU_RESET]		= { SRC_VPU_RCR, BIT(0) },
+	[IMX8MQ_RESET_PCIEPHY2]			= { SRC_PCIE2_RCR,
+						    BIT(2) | BIT(1) },
+	[IMX8MQ_RESET_PCIEPHY2_PERST]		= { SRC_PCIE2_RCR, BIT(3) },
+	[IMX8MQ_RESET_PCIE2_CTRL_APPS_EN]	= { SRC_PCIE2_RCR, BIT(6) },
+	[IMX8MQ_RESET_PCIE2_CTRL_APPS_TURNOFF]	= { SRC_PCIE2_RCR, BIT(11) },
+	[IMX8MQ_RESET_MIPI_CSI1_CORE_RESET]	= { SRC_MIPIPHY1_RCR, BIT(0) },
+	[IMX8MQ_RESET_MIPI_CSI1_PHY_REF_RESET]	= { SRC_MIPIPHY1_RCR, BIT(1) },
+	[IMX8MQ_RESET_MIPI_CSI1_ESC_RESET]	= { SRC_MIPIPHY1_RCR, BIT(2) },
+	[IMX8MQ_RESET_MIPI_CSI2_CORE_RESET]	= { SRC_MIPIPHY2_RCR, BIT(0) },
+	[IMX8MQ_RESET_MIPI_CSI2_PHY_REF_RESET]	= { SRC_MIPIPHY2_RCR, BIT(1) },
+	[IMX8MQ_RESET_MIPI_CSI2_ESC_RESET]	= { SRC_MIPIPHY2_RCR, BIT(2) },
+	[IMX8MQ_RESET_DDRC1_PRST]		= { SRC_DDRC_RCR, BIT(0) },
+	[IMX8MQ_RESET_DDRC1_CORE_RESET]		= { SRC_DDRC_RCR, BIT(1) },
+	[IMX8MQ_RESET_DDRC1_PHY_RESET]		= { SRC_DDRC_RCR, BIT(2) },
+	[IMX8MQ_RESET_DDRC2_PHY_RESET]		= { SRC_DDRC2_RCR, BIT(0) },
+	[IMX8MQ_RESET_DDRC2_CORE_RESET]		= { SRC_DDRC2_RCR, BIT(1) },
+	[IMX8MQ_RESET_DDRC2_PRST]		= { SRC_DDRC2_RCR, BIT(2) },
+};
+
+static int imx8mq_reset_set(struct reset_controller_dev *rcdev,
+			    unsigned long id, bool assert)
+{
+	struct imx7_src *imx7src = to_imx7_src(rcdev);
+	const unsigned int bit = imx7src->signals[id].bit;
+	unsigned int value = assert ? bit : 0;
+
+	switch (id) {
+	case IMX8MQ_RESET_PCIEPHY:
+	case IMX8MQ_RESET_PCIEPHY2: /* fallthrough */
+		/*
+		 * wait for more than 10us to release phy g_rst and
+		 * btnrst
+		 */
+		if (!assert)
+			udelay(10);
+		break;
+
+	case IMX8MQ_RESET_PCIE_CTRL_APPS_EN:
+	case IMX8MQ_RESET_PCIE2_CTRL_APPS_EN:	/* fallthrough */
+	case IMX8MQ_RESET_MIPI_DIS_PCLK_RESET_N:	/* fallthrough */
+	case IMX8MQ_RESET_MIPI_DIS_ESC_RESET_N:	/* fallthrough */
+	case IMX8MQ_RESET_MIPI_DIS_DPI_RESET_N:	/* fallthrough */
+	case IMX8MQ_RESET_MIPI_DSI_RESET_N:	/* fallthrough */
+	case IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N:	/* fallthrough */
+		value = assert ? 0 : bit;
+		break;
+	}
+
+	return imx7_reset_update(imx7src, id, value);
+}
+
+static int imx8mq_reset_assert(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	return imx8mq_reset_set(rcdev, id, true);
+}
+
+static int imx8mq_reset_deassert(struct reset_controller_dev *rcdev,
+				 unsigned long id)
+{
+	return imx8mq_reset_set(rcdev, id, false);
+}
+
+static const struct imx7_src_variant variant_imx8mq = {
+	.signals = imx8mq_src_signals,
+	.signals_num = ARRAY_SIZE(imx8mq_src_signals),
+	.ops = {
+		.assert   = imx8mq_reset_assert,
+		.deassert = imx8mq_reset_deassert,
+	},
 };
 
 static int imx7_reset_probe(struct platform_device *pdev)
@@ -125,11 +266,13 @@ static int imx7_reset_probe(struct platform_device *pdev)
 	struct imx7_src *imx7src;
 	struct device *dev = &pdev->dev;
 	struct regmap_config config = { .name = "src" };
+	const struct imx7_src_variant *variant = of_device_get_match_data(dev);
 
 	imx7src = devm_kzalloc(dev, sizeof(*imx7src), GFP_KERNEL);
 	if (!imx7src)
 		return -ENOMEM;
 
+	imx7src->signals = variant->signals;
 	imx7src->regmap = syscon_node_to_regmap(dev->of_node);
 	if (IS_ERR(imx7src->regmap)) {
 		dev_err(dev, "Unable to get imx7-src regmap");
@@ -138,15 +281,16 @@ static int imx7_reset_probe(struct platform_device *pdev)
 	regmap_attach_dev(dev, imx7src->regmap, &config);
 
 	imx7src->rcdev.owner     = THIS_MODULE;
-	imx7src->rcdev.nr_resets = IMX7_RESET_NUM;
-	imx7src->rcdev.ops       = &imx7_reset_ops;
+	imx7src->rcdev.nr_resets = variant->signals_num;
+	imx7src->rcdev.ops       = &variant->ops;
 	imx7src->rcdev.of_node   = dev->of_node;
 
 	return devm_reset_controller_register(dev, &imx7src->rcdev);
 }
 
 static const struct of_device_id imx7_reset_dt_ids[] = {
-	{ .compatible = "fsl,imx7d-src", },
+	{ .compatible = "fsl,imx7d-src", .data = &variant_imx7 },
+	{ .compatible = "fsl,imx8mq-src", .data = &variant_imx8mq },
 	{ /* sentinel */ },
 };
 

drivers/reset/reset-socfpga.c

@@ -11,6 +11,7 @@
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/reset-controller.h>
+#include <linux/reset/socfpga.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
@@ -18,7 +19,6 @@
 #include "reset-simple.h"
 
 #define SOCFPGA_NR_BANKS	8
-void __init socfpga_reset_init(void);
 
 static int a10_reset_init(struct device_node *np)
 {

drivers/reset/reset-sunxi.c

@@ -18,6 +18,7 @@
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/reset-controller.h>
+#include <linux/reset/sunxi.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>

drivers/reset/reset-zynqmp.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Xilinx, Inc.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/firmware/xlnx-zynqmp.h>
+
+#define ZYNQMP_NR_RESETS (ZYNQMP_PM_RESET_END - ZYNQMP_PM_RESET_START)
+#define ZYNQMP_RESET_ID ZYNQMP_PM_RESET_START
+
+struct zynqmp_reset_data {
+	struct reset_controller_dev rcdev;
+	const struct zynqmp_eemi_ops *eemi_ops;
+};
+
+static inline struct zynqmp_reset_data *
+to_zynqmp_reset_data(struct reset_controller_dev *rcdev)
+{
+	return container_of(rcdev, struct zynqmp_reset_data, rcdev);
+}
+
+static int zynqmp_reset_assert(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev);
+
+	return priv->eemi_ops->reset_assert(ZYNQMP_RESET_ID + id,
+					    PM_RESET_ACTION_ASSERT);
+}
+
+static int zynqmp_reset_deassert(struct reset_controller_dev *rcdev,
+				 unsigned long id)
+{
+	struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev);
+
+	return priv->eemi_ops->reset_assert(ZYNQMP_RESET_ID + id,
+					    PM_RESET_ACTION_RELEASE);
+}
+
+static int zynqmp_reset_status(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev);
+	int val, err;
+
+	err = priv->eemi_ops->reset_get_status(ZYNQMP_RESET_ID + id, &val);
+	if (err)
+		return err;
+
+	return val;
+}
+
+static int zynqmp_reset_reset(struct reset_controller_dev *rcdev,
+			      unsigned long id)
+{
+	struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev);
+
+	return priv->eemi_ops->reset_assert(ZYNQMP_RESET_ID + id,
+					    PM_RESET_ACTION_PULSE);
+}
+
+static struct reset_control_ops zynqmp_reset_ops = {
+	.reset = zynqmp_reset_reset,
+	.assert = zynqmp_reset_assert,
+	.deassert = zynqmp_reset_deassert,
+	.status = zynqmp_reset_status,
+};
+
+static int zynqmp_reset_probe(struct platform_device *pdev)
+{
+	struct zynqmp_reset_data *priv;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, priv);
+
+	priv->eemi_ops = zynqmp_pm_get_eemi_ops();
+	if (!priv->eemi_ops)
+		return -ENXIO;
+
+	priv->rcdev.ops = &zynqmp_reset_ops;
+	priv->rcdev.owner = THIS_MODULE;
+	priv->rcdev.of_node = pdev->dev.of_node;
+	priv->rcdev.nr_resets = ZYNQMP_NR_RESETS;
+
+	return devm_reset_controller_register(&pdev->dev, &priv->rcdev);
+}
+
+static const struct of_device_id zynqmp_reset_dt_ids[] = {
+	{ .compatible = "xlnx,zynqmp-reset", },
+	{ /* sentinel */ },
+};
+
+static struct platform_driver zynqmp_reset_driver = {
+	.probe	= zynqmp_reset_probe,
+	.driver = {
+		.name		= KBUILD_MODNAME,
+		.of_match_table	= zynqmp_reset_dt_ids,
+	},
+};
+
+static int __init zynqmp_reset_init(void)
+{
+	return platform_driver_register(&zynqmp_reset_driver);
+}
+
+arch_initcall(zynqmp_reset_init);

drivers/soc/amlogic/meson-canvas.c

@@ -51,16 +51,30 @@ struct meson_canvas *meson_canvas_get(struct device *dev)
 {
 	struct device_node *canvas_node;
 	struct platform_device *canvas_pdev;
+	struct meson_canvas *canvas;
 
 	canvas_node = of_parse_phandle(dev->of_node, "amlogic,canvas", 0);
 	if (!canvas_node)
 		return ERR_PTR(-ENODEV);
 
 	canvas_pdev = of_find_device_by_node(canvas_node);
-	if (!canvas_pdev)
+	if (!canvas_pdev) {
+		of_node_put(canvas_node);
 		return ERR_PTR(-EPROBE_DEFER);
+	}
+
+	of_node_put(canvas_node);
+
+	/*
+	 * If priv is NULL, it's probably because the canvas hasn't
+	 * properly initialized. Bail out with -EINVAL because, in the
+	 * current state, this driver probe cannot return -EPROBE_DEFER
+	 */
+	canvas = dev_get_drvdata(&canvas_pdev->dev);
+	if (!canvas)
+		return ERR_PTR(-EINVAL);
 
-	return dev_get_drvdata(&canvas_pdev->dev);
+	return canvas;
 }
 EXPORT_SYMBOL_GPL(meson_canvas_get);
 

drivers/soc/bcm/Kconfig

 menu "Broadcom SoC drivers"
 
+config BCM2835_POWER
+	bool "BCM2835 power domain driver"
+	depends on ARCH_BCM2835 || (COMPILE_TEST && OF)
+	default y if ARCH_BCM2835
+	select PM_GENERIC_DOMAINS if PM
+	select RESET_CONTROLLER
+	help
+	  This enables support for the BCM2835 power domains and reset
+	  controller.  Any usage of power domains by the Raspberry Pi
+	  firmware means that Linux usage of the same power domain
+	  must be accessed using the RASPBERRYPI_POWER driver
+
 config RASPBERRYPI_POWER
 	bool "Raspberry Pi power domain driver"
 	depends on ARCH_BCM2835 || (COMPILE_TEST && OF)

drivers/soc/bcm/Makefile

+obj-$(CONFIG_BCM2835_POWER)	+= bcm2835-power.o
 obj-$(CONFIG_RASPBERRYPI_POWER)	+= raspberrypi-power.o
 obj-$(CONFIG_SOC_BRCMSTB)	+= brcmstb/

drivers/soc/fsl/Kconfig

@@ -22,6 +22,7 @@ config FSL_GUTS
 config FSL_MC_DPIO
         tristate "QorIQ DPAA2 DPIO driver"
         depends on FSL_MC_BUS
+        select SOC_BUS
         help
 	  Driver for the DPAA2 DPIO object.  A DPIO provides queue and
 	  buffer management facilities for software to interact with

drivers/soc/fsl/dpio/dpio-cmd.h

@@ -26,6 +26,7 @@
 #define DPIO_CMDID_DISABLE				DPIO_CMD(0x003)
 #define DPIO_CMDID_GET_ATTR				DPIO_CMD(0x004)
 #define DPIO_CMDID_RESET				DPIO_CMD(0x005)
+#define DPIO_CMDID_SET_STASHING_DEST			DPIO_CMD(0x120)
 
 struct dpio_cmd_open {
 	__le32 dpio_id;
@@ -47,4 +48,8 @@ struct dpio_rsp_get_attr {
 	__le32 qbman_version;
 };
 
+struct dpio_stashing_dest {
+	u8 sdest;
+};
+
 #endif /* _FSL_DPIO_CMD_H */

drivers/soc/fsl/dpio/dpio-service.c

@@ -473,7 +473,7 @@ EXPORT_SYMBOL_GPL(dpaa2_io_service_enqueue_qd);
  * Return 0 for success, and negative error code for failure.
  */
 int dpaa2_io_service_release(struct dpaa2_io *d,
-			     u32 bpid,
+			     u16 bpid,
 			     const u64 *buffers,
 			     unsigned int num_buffers)
 {
@@ -502,7 +502,7 @@ EXPORT_SYMBOL_GPL(dpaa2_io_service_release);
  * Eg. if the buffer pool is empty, this will return zero.
  */
 int dpaa2_io_service_acquire(struct dpaa2_io *d,
-			     u32 bpid,
+			     u16 bpid,
 			     u64 *buffers,
 			     unsigned int num_buffers)
 {
@@ -630,6 +630,7 @@ struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last)
 		if (!(dpaa2_dq_flags(ret) & DPAA2_DQ_STAT_VALIDFRAME))
 			ret = NULL;
 	} else {
+		prefetch(&s->vaddr[s->idx]);
 		*is_last = 0;
 	}
 

drivers/soc/fsl/dpio/dpio.c

@@ -166,6 +166,22 @@ int dpio_get_attributes(struct fsl_mc_io *mc_io,
 	return 0;
 }
 
+int dpio_set_stashing_destination(struct fsl_mc_io *mc_io,
+				  u32 cmd_flags,
+				  u16 token,
+				  u8 sdest)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dpio_stashing_dest *dpio_cmd;
+
+	cmd.header = mc_encode_cmd_header(DPIO_CMDID_SET_STASHING_DEST,
+					  cmd_flags, token);
+	dpio_cmd = (struct dpio_stashing_dest *)cmd.params;
+	dpio_cmd->sdest = sdest;
+
+	return mc_send_command(mc_io, &cmd);
+}
+
 /**
  * dpio_get_api_version - Get Data Path I/O API version
  * @mc_io:	Pointer to MC portal's DPIO object

drivers/soc/fsl/dpio/dpio.h

@@ -75,6 +75,11 @@ int dpio_get_attributes(struct fsl_mc_io	*mc_io,
 			u16		token,
 			struct dpio_attr	*attr);
 
+int dpio_set_stashing_destination(struct fsl_mc_io *mc_io,
+				  u32 cmd_flags,
+				  u16 token,
+				  u8 dest);
+
 int dpio_get_api_version(struct fsl_mc_io *mc_io,
 			 u32 cmd_flags,
 			 u16 *major_ver,

drivers/soc/fsl/dpio/qbman-portal.c

@@ -169,9 +169,9 @@ struct qbman_swp *qbman_swp_init(const struct qbman_swp_desc *d)
 				3, /* RPM: Valid bit mode, RCR in array mode */
 				2, /* DCM: Discrete consumption ack mode */
 				3, /* EPM: Valid bit mode, EQCR in array mode */
-				0, /* mem stashing drop enable == FALSE */
+				1, /* mem stashing drop enable == TRUE */
 				1, /* mem stashing priority == TRUE */
-				0, /* mem stashing enable == FALSE */
+				1, /* mem stashing enable == TRUE */
 				1, /* dequeue stashing priority == TRUE */
 				0, /* dequeue stashing enable == FALSE */
 				0); /* EQCR_CI stashing priority == FALSE */
@@ -180,6 +180,7 @@ struct qbman_swp *qbman_swp_init(const struct qbman_swp_desc *d)
 	reg = qbman_read_register(p, QBMAN_CINH_SWP_CFG);
 	if (!reg) {
 		pr_err("qbman: the portal is not enabled!\n");
+		kfree(p);
 		return NULL;
 	}
 

drivers/soc/imx/Kconfig

@@ -2,7 +2,7 @@ menu "i.MX SoC drivers"
 
 config IMX_GPCV2_PM_DOMAINS
 	bool "i.MX GPCv2 PM domains"
-	depends on SOC_IMX7D || SOC_IMX8MQ || (COMPILE_TEST && OF)
+	depends on ARCH_MXC || (COMPILE_TEST && OF)
 	depends on PM
 	select PM_GENERIC_DOMAINS
 	default y if SOC_IMX7D