Merge branch 'topic/xilinx' into for-linus

Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt

+Xilinx AXI VDMA engine, it does transfers between memory and video devices.
+It can be configured to have one channel or two channels. If configured
+as two channels, one is to transmit to the video device and another is
+to receive from the video device.
+
 Xilinx AXI DMA engine, it does transfers between memory and AXI4 stream
 target devices. It can be configured to have one channel or two channels.
 If configured as two channels, one is to transmit to the device and another
 is to receive from the device.
 
+Xilinx AXI CDMA engine, it does transfers between memory-mapped source
+address and a memory-mapped destination address.
+
 Required properties:
-- compatible: Should be "xlnx,axi-dma-1.00.a"
+- compatible: Should be "xlnx,axi-vdma-1.00.a" or "xlnx,axi-dma-1.00.a" or
+	      "xlnx,axi-cdma-1.00.a""
 - #dma-cells: Should be <1>, see "dmas" property below
-- reg: Should contain DMA registers location and length.
+- reg: Should contain VDMA registers location and length.
+- xlnx,addrwidth: Should be the vdma addressing size in bits(ex: 32 bits).
+- dma-ranges: Should be as the following <dma_addr cpu_addr max_len>.
 - dma-channel child node: Should have at least one channel and can have up to
 	two channels per device. This node specifies the properties of each
 	DMA channel (see child node properties below).
+- clocks: Input clock specifier. Refer to common clock bindings.
+- clock-names: List of input clocks
+	For VDMA:
+	Required elements: "s_axi_lite_aclk"
+	Optional elements: "m_axi_mm2s_aclk" "m_axi_s2mm_aclk",
+			   "m_axis_mm2s_aclk", "s_axis_s2mm_aclk"
+	For CDMA:
+	Required elements: "s_axi_lite_aclk", "m_axi_aclk"
+	FOR AXIDMA:
+	Required elements: "s_axi_lite_aclk"
+	Optional elements: "m_axi_mm2s_aclk", "m_axi_s2mm_aclk",
+			   "m_axi_sg_aclk"
+
+Required properties for VDMA:
+- xlnx,num-fstores: Should be the number of framebuffers as configured in h/w.
 
 Optional properties:
-- xlnx,include-sg: Tells whether configured for Scatter-mode in
+- xlnx,include-sg: Tells configured for Scatter-mode in
 	the hardware.
+Optional properties for AXI DMA:
+- xlnx,mcdma: Tells whether configured for multi-channel mode in the hardware.
+Optional properties for VDMA:
+- xlnx,flush-fsync: Tells which channel to Flush on Frame sync.
+	It takes following values:
+	{1}, flush both channels
+	{2}, flush mm2s channel
+	{3}, flush s2mm channel
 
 Required child node properties:
-- compatible: It should be either "xlnx,axi-dma-mm2s-channel" or
+- compatible:
+	For VDMA: It should be either "xlnx,axi-vdma-mm2s-channel" or
+	"xlnx,axi-vdma-s2mm-channel".
+	For CDMA: It should be "xlnx,axi-cdma-channel".
+	For AXIDMA: It should be either "xlnx,axi-dma-mm2s-channel" or
 	"xlnx,axi-dma-s2mm-channel".
-- interrupts: Should contain per channel DMA interrupts.
+- interrupts: Should contain per channel VDMA interrupts.
 - xlnx,datawidth: Should contain the stream data width, take values
 	{32,64...1024}.
 
-Option child node properties:
-- xlnx,include-dre: Tells whether hardware is configured for Data
+Optional child node properties:
+- xlnx,include-dre: Tells hardware is configured for Data
 	Realignment Engine.
+Optional child node properties for VDMA:
+- xlnx,genlock-mode: Tells Genlock synchronization is
+	enabled/disabled in hardware.
+Optional child node properties for AXI DMA:
+-dma-channels: Number of dma channels in child node.
 
 Example:
 ++++++++
 
-axi_dma_0: axidma@40400000 {
-	compatible = "xlnx,axi-dma-1.00.a";
+axi_vdma_0: axivdma@40030000 {
+	compatible = "xlnx,axi-vdma-1.00.a";
 	#dma_cells = <1>;
-	reg = < 0x40400000 0x10000 >;
-	dma-channel@40400000 {
-		compatible = "xlnx,axi-dma-mm2s-channel";
-		interrupts = < 0 59 4 >;
+	reg = < 0x40030000 0x10000 >;
+	dma-ranges = <0x00000000 0x00000000 0x40000000>;
+	xlnx,num-fstores = <0x8>;
+	xlnx,flush-fsync = <0x1>;
+	xlnx,addrwidth = <0x20>;
+	clocks = <&clk 0>, <&clk 1>, <&clk 2>, <&clk 3>, <&clk 4>;
+	clock-names = "s_axi_lite_aclk", "m_axi_mm2s_aclk", "m_axi_s2mm_aclk",
+		      "m_axis_mm2s_aclk", "s_axis_s2mm_aclk";
+	dma-channel@40030000 {
+		compatible = "xlnx,axi-vdma-mm2s-channel";
+		interrupts = < 0 54 4 >;
 		xlnx,datawidth = <0x40>;
 	} ;
-	dma-channel@40400030 {
-		compatible = "xlnx,axi-dma-s2mm-channel";
-		interrupts = < 0 58 4 >;
+	dma-channel@40030030 {
+		compatible = "xlnx,axi-vdma-s2mm-channel";
+		interrupts = < 0 53 4 >;
 		xlnx,datawidth = <0x40>;
 	} ;
 } ;
@@ -49,7 +99,7 @@ axi_dma_0: axidma@40400000 {
 * DMA client
 
 Required properties:
-- dmas: a list of <[DMA device phandle] [Channel ID]> pairs,
+- dmas: a list of <[Video DMA device phandle] [Channel ID]> pairs,
 	where Channel ID is '0' for write/tx and '1' for read/rx
 	channel.
 - dma-names: a list of DMA channel names, one per "dmas" entry
@@ -57,9 +107,9 @@ Required properties:
 Example:
 ++++++++
 
-dmatest_0: dmatest@0 {
-	compatible ="xlnx,axi-dma-test-1.00.a";
-	dmas = <&axi_dma_0 0
-		&axi_dma_0 1>;
-	dma-names = "dma0", "dma1";
+vdmatest_0: vdmatest@0 {
+	compatible ="xlnx,axi-vdma-test-1.00.a";
+	dmas = <&axi_vdma_0 0
+		&axi_vdma_0 1>;
+	dma-names = "vdma0", "vdma1";
 } ;

Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt

-Xilinx AXI VDMA engine, it does transfers between memory and video devices.
-It can be configured to have one channel or two channels. If configured
-as two channels, one is to transmit to the video device and another is
-to receive from the video device.
-
-Xilinx AXI DMA engine, it does transfers between memory and AXI4 stream
-target devices. It can be configured to have one channel or two channels.
-If configured as two channels, one is to transmit to the device and another
-is to receive from the device.
-
-Xilinx AXI CDMA engine, it does transfers between memory-mapped source
-address and a memory-mapped destination address.
-
-Required properties:
-- compatible: Should be "xlnx,axi-vdma-1.00.a" or "xlnx,axi-dma-1.00.a" or
-	      "xlnx,axi-cdma-1.00.a""
-- #dma-cells: Should be <1>, see "dmas" property below
-- reg: Should contain VDMA registers location and length.
-- xlnx,addrwidth: Should be the vdma addressing size in bits(ex: 32 bits).
-- dma-ranges: Should be as the following <dma_addr cpu_addr max_len>.
-- dma-channel child node: Should have at least one channel and can have up to
-	two channels per device. This node specifies the properties of each
-	DMA channel (see child node properties below).
-- clocks: Input clock specifier. Refer to common clock bindings.
-- clock-names: List of input clocks
-	For VDMA:
-	Required elements: "s_axi_lite_aclk"
-	Optional elements: "m_axi_mm2s_aclk" "m_axi_s2mm_aclk",
-			   "m_axis_mm2s_aclk", "s_axis_s2mm_aclk"
-	For CDMA:
-	Required elements: "s_axi_lite_aclk", "m_axi_aclk"
-	FOR AXIDMA:
-	Required elements: "s_axi_lite_aclk"
-	Optional elements: "m_axi_mm2s_aclk", "m_axi_s2mm_aclk",
-			   "m_axi_sg_aclk"
-
-Required properties for VDMA:
-- xlnx,num-fstores: Should be the number of framebuffers as configured in h/w.
-
-Optional properties:
-- xlnx,include-sg: Tells configured for Scatter-mode in
-	the hardware.
-Optional properties for VDMA:
-- xlnx,flush-fsync: Tells which channel to Flush on Frame sync.
-	It takes following values:
-	{1}, flush both channels
-	{2}, flush mm2s channel
-	{3}, flush s2mm channel
-
-Required child node properties:
-- compatible: It should be either "xlnx,axi-vdma-mm2s-channel" or
-	"xlnx,axi-vdma-s2mm-channel".
-- interrupts: Should contain per channel VDMA interrupts.
-- xlnx,datawidth: Should contain the stream data width, take values
-	{32,64...1024}.
-
-Optional child node properties:
-- xlnx,include-dre: Tells hardware is configured for Data
-	Realignment Engine.
-Optional child node properties for VDMA:
-- xlnx,genlock-mode: Tells Genlock synchronization is
-	enabled/disabled in hardware.
-
-Example:
-++++++++
-
-axi_vdma_0: axivdma@40030000 {
-	compatible = "xlnx,axi-vdma-1.00.a";
-	#dma_cells = <1>;
-	reg = < 0x40030000 0x10000 >;
-	dma-ranges = <0x00000000 0x00000000 0x40000000>;
-	xlnx,num-fstores = <0x8>;
-	xlnx,flush-fsync = <0x1>;
-	xlnx,addrwidth = <0x20>;
-	clocks = <&clk 0>, <&clk 1>, <&clk 2>, <&clk 3>, <&clk 4>;
-	clock-names = "s_axi_lite_aclk", "m_axi_mm2s_aclk", "m_axi_s2mm_aclk",
-		      "m_axis_mm2s_aclk", "s_axis_s2mm_aclk";
-	dma-channel@40030000 {
-		compatible = "xlnx,axi-vdma-mm2s-channel";
-		interrupts = < 0 54 4 >;
-		xlnx,datawidth = <0x40>;
-	} ;
-	dma-channel@40030030 {
-		compatible = "xlnx,axi-vdma-s2mm-channel";
-		interrupts = < 0 53 4 >;
-		xlnx,datawidth = <0x40>;
-	} ;
-} ;
-
-
-* DMA client
-
-Required properties:
-- dmas: a list of <[Video DMA device phandle] [Channel ID]> pairs,
-	where Channel ID is '0' for write/tx and '1' for read/rx
-	channel.
-- dma-names: a list of DMA channel names, one per "dmas" entry
-
-Example:
-++++++++
-
-vdmatest_0: vdmatest@0 {
-	compatible ="xlnx,axi-vdma-test-1.00.a";
-	dmas = <&axi_vdma_0 0
-		&axi_vdma_0 1>;
-	dma-names = "vdma0", "vdma1";
-} ;

Documentation/devicetree/bindings/dma/xilinx/zynqmp_dma.txt

+Xilinx ZynqMP DMA engine, it does support memory to memory transfers,
+memory to device and device to memory transfers. It also has flow
+control and rate control support for slave/peripheral dma access.
+
+Required properties:
+- compatible		: Should be "xlnx,zynqmp-dma-1.0"
+- reg			: Memory map for gdma/adma module access.
+- interrupt-parent	: Interrupt controller the interrupt is routed through
+- interrupts		: Should contain DMA channel interrupt.
+- xlnx,bus-width	: Axi buswidth in bits. Should contain 128 or 64
+- clock-names		: List of input clocks "clk_main", "clk_apb"
+			  (see clock bindings for details)
+
+Optional properties:
+- dma-coherent		: Present if dma operations are coherent.
+
+Example:
+++++++++
+fpd_dma_chan1: dma@fd500000 {
+	compatible = "xlnx,zynqmp-dma-1.0";
+	reg = <0x0 0xFD500000 0x1000>;
+	interrupt-parent = <&gic>;
+	interrupts = <0 117 4>;
+	clock-names = "clk_main", "clk_apb";
+	xlnx,bus-width = <128>;
+	dma-coherent;
+};

drivers/dma/Kconfig

@@ -533,19 +533,31 @@ config XGENE_DMA
 	help
 	  Enable support for the APM X-Gene SoC DMA engine.
 
-config XILINX_VDMA
-	tristate "Xilinx AXI VDMA Engine"
+config XILINX_DMA
+	tristate "Xilinx AXI DMAS Engine"
 	depends on (ARCH_ZYNQ || MICROBLAZE || ARM64)
 	select DMA_ENGINE
 	help
 	  Enable support for Xilinx AXI VDMA Soft IP.
 
-	  This engine provides high-bandwidth direct memory access
+	  AXI VDMA engine provides high-bandwidth direct memory access
 	  between memory and AXI4-Stream video type target
 	  peripherals including peripherals which support AXI4-
 	  Stream Video Protocol.  It has two stream interfaces/
 	  channels, Memory Mapped to Stream (MM2S) and Stream to
 	  Memory Mapped (S2MM) for the data transfers.
+	  AXI CDMA engine provides high-bandwidth direct memory access
+	  between a memory-mapped source address and a memory-mapped
+	  destination address.
+	  AXI DMA engine provides high-bandwidth one dimensional direct
+	  memory access between memory and AXI4-Stream target peripherals.
+
+config XILINX_ZYNQMP_DMA
+	tristate "Xilinx ZynqMP DMA Engine"
+	depends on (ARCH_ZYNQ || MICROBLAZE || ARM64)
+	select DMA_ENGINE
+	help
+	  Enable support for Xilinx ZynqMP DMA controller.
 
 config ZX_DMA
 	tristate "ZTE ZX296702 DMA support"

drivers/dma/xilinx/Makefile

-obj-$(CONFIG_XILINX_VDMA) += xilinx_vdma.o
+obj-$(CONFIG_XILINX_DMA) += xilinx_dma.o
+obj-$(CONFIG_XILINX_ZYNQMP_DMA) += zynqmp_dma.o