- 30 11月, 2016 2 次提交
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由 Arnd Bergmann 提交于
A recent patch added a new function that is now unused whenever CONFIG_OF is disabled: drivers/misc/sram.c:342:12: error: 'atmel_securam_wait' defined but not used [-Werror=unused-function] There is actually no reason for the #ifdef, because the driver currently cannot be used in a meaningful way without CONFIG_OF, and there is no compile-time dependency. Removing that #ifdef and the respective of_match_ptr() avoids the warning and simplifies the driver slightly. Fixes: 2ae2e288 ("misc: sram: add Atmel securam support") Reviewed-by: NVladimir Zapolskiy <vz@mleia.com> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Arnd Bergmann 提交于
Merge tag 'davinci-for-v4.10/drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers Pull "DaVinci driver updates for v4.10 (part 2)" from Sekhar Nori: Fixes for drivers already queued to prevent section mismatch warnings introduced by them. * tag 'davinci-for-v4.10/drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: memory: da8xx-ddrctl: drop the call to of_flat_dt_get_machine_name() bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name()
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- 26 11月, 2016 2 次提交
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由 Thierry Reding 提交于
Allow disabling PSCI support (mostly for testing purposes) by setting the status property to "disabled". This makes the node behave in much the same way as proper device nodes. Signed-off-by: NThierry Reding <treding@nvidia.com> Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Kevin Brodsky 提交于
On arm and arm64, PSCI is one of the possible firmware interfaces used for power management. This includes both turning CPUs on and off, and suspending them (entering idle states). This patch adds a PSCI checker module that enables basic testing of PSCI operations during startup. There are two main tests: CPU hotplugging and suspending. In the hotplug tests, the hotplug API is used to turn off and on again all CPUs in the system, and then all CPUs in each cluster, checking the consistency of the return codes. In the suspend tests, a high-priority thread is created on each core and uses low-level cpuidle functionalities to enter suspend, in all the possible states and multiple times. This should allow a maximum number of CPUs to enter the same sleep state at the same or slightly different time. In essence, the suspend tests use a principle similar to that of the intel_powerclamp driver (drivers/thermal/intel_powerclamp.c), but the threads are only kept for the duration of the test (they are already gone when userspace is started) and it does not require to stop/start the tick. While in theory power management PSCI functions (CPU_{ON,OFF,SUSPEND}) could be directly called, this proved too difficult as it would imply the duplication of all the logic used by the kernel to allow for a clean shutdown/bringup/suspend of the CPU (the deepest sleep states implying potentially the shutdown of the CPU). Note that this file cannot be compiled as a loadable module, since it uses a number of non-exported identifiers (essentially for PSCI-specific checks and direct use of cpuidle) and relies on the absence of userspace to avoid races when calling hotplug and cpuidle functions. For now at least, CONFIG_PSCI_CHECKER is mutually exclusive with CONFIG_TORTURE_TEST, because torture tests may also use hotplug and cause false positives in the hotplug tests. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kevin Hilman <khilman@kernel.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: James Morse <james.morse@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Acked-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> [torture test config] Signed-off-by: NKevin Brodsky <kevin.brodsky@arm.com> [lpieralisi: added cpuidle locking, reworded commit log/kconfig entry] Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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- 23 11月, 2016 2 次提交
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由 Bartosz Golaszewski 提交于
In order to avoid a section mismatch drop the call to of_flat_dt_get_machine_name() when printing the error message. Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: NSekhar Nori <nsekhar@ti.com>
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由 Bartosz Golaszewski 提交于
In order to avoid a section mismatch drop the call to of_flat_dt_get_machine_name() when printing the error message. While we're at it: fix a typo. Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: NSekhar Nori <nsekhar@ti.com>
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- 19 11月, 2016 7 次提交
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由 Olof Johansson 提交于
Merge tag 'tegra-for-4.10-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers soc: tegra: Core SoC changes for v4.10-rc1 This contains mostly cleanup and new feature work on the power management controller as well as the addition of a Kconfig symbol for the new Tegra186 (Parker) SoC generation. * tag 'tegra-for-4.10-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: soc/tegra: pmc: Use consistent naming for PM domains soc/tegra: pmc: Remove genpd when adding provider fails soc/tegra: pmc: Check return code for pm_genpd_init() soc/tegra: pmc: Clean-up I/O rail error messages soc/tegra: pmc: Simplify IO rail bit handling soc/tegra: pmc: Guard against uninitialised PMC clock soc/tegra: pmc: Add I/O pad voltage support soc/tegra: pmc: Use consistent ordering of bit definitions soc/tegra: pmc: Correct type of variable for tegra_pmc_readl() soc/tegra: pmc: Use BIT macro for register field definition Signed-off-by: NOlof Johansson <olof@lixom.net>
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由 Olof Johansson 提交于
Merge tag 'tegra-for-4.10-bus' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers bus: Add Tegra GMI support This provides a driver to enable the use of the Generic Memory Interface found on Tegra SoCs that can host various types of high-speed devices. * tag 'tegra-for-4.10-bus' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: bus: Add support for Tegra Generic Memory Interface dt/bindings: Add bindings for Tegra GMI controller Signed-off-by: NOlof Johansson <olof@lixom.net>
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由 Olof Johansson 提交于
Merge tag 'tegra-for-4.10-reset' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers reset: Add Tegra BPMP reset driver This contains a patch which implements a reset driver using the services provided by the BPMP firmware (via the MRQ_RESET request). * tag 'tegra-for-4.10-reset' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: reset: Add Tegra BPMP reset driver Signed-off-by: NOlof Johansson <olof@lixom.net>
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由 Olof Johansson 提交于
Merge tag 'tegra-for-4.10-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers firmware: Add Tegra IVC and BPMP support IVC is an inter-processor communication protocol that uses shared memory to exchange data between processors. The BPMP driver makes use of this to communicate with the Boot and Power Management Processor (BPMP) and uses an additional hardware synchronization primitive from the HSP block to signal availability of new data (doorbell). Firmware running on the BPMP implements a number of services such as the control of clocks and resets within the system, or the ability to ungate or gate power partitions. * tag 'tegra-for-4.10-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: dt-bindings: firmware: Allow child nodes inside the Tegra BPMP dt-bindings: Add power domains to Tegra BPMP firmware firmware: tegra: Add BPMP support firmware: tegra: Add IVC library dt-bindings: firmware: Add bindings for Tegra BPMP Signed-off-by: NOlof Johansson <olof@lixom.net>
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由 Olof Johansson 提交于
Merge tag 'tegra-for-4.10-mailbox' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers mailbox: Add Tegra HSP driver This contains the device tree bindings and a driver for the Tegra HSP, a hardware block that provides hardware synchronization primitives and is the foundation for inter-processor communication between CPU and BPMP. * tag 'tegra-for-4.10-mailbox' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: mailbox: tegra-hsp: Use after free in tegra_hsp_remove_doorbells() mailbox: Add Tegra HSP driver dt-bindings: mailbox: Add Tegra HSP binding soc/tegra: Add Tegra186 support Signed-off-by: NOlof Johansson <olof@lixom.net>
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git://git.pengutronix.de/git/pza/linux由 Olof Johansson 提交于
Reset controller changes for v4.10 - remove obsolete STiH41[56] platform support - add Oxford Semiconductor OX820 support - add reset index include files for OX810SE and OX820 - make drivers with boolean Kconfig options explicitly non-modular - allow shared pulsed resets via reset_control_reset, which in this case means that the reset must have been triggered once, but possibly earlier, after the function returns, and is never triggered again for the lifetime of the reset control * tag 'reset-for-4.10' of git://git.pengutronix.de/git/pza/linux: reset: allow using reset_control_reset with shared reset reset: lpc18xx: make it explicitly non-modular reset: zynq: make it explicitly non-modular reset: sunxi: make it explicitly non-modular reset: socfpga: make it explicitly non-modular reset: berlin: make it explicitly non-modular dt-bindings: reset: oxnas: Update for OX820 dt-bindings: reset: oxnas: Add include file with reset indexes reset: oxnas: Add OX820 support reset: sti: softreset: Remove obsolete platforms from dt binding doc. reset: sti: Remove STiH415/6 reset support Signed-off-by: NOlof Johansson <olof@lixom.net>
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由 Olof Johansson 提交于
Merge tag 'at91-ab-4.10-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into next/drivers Drivers for 4.10: - few fixes for the memory drivers - minimal security module driver - support for the Secure SRAM * tag 'at91-ab-4.10-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: misc: sram: add Atmel securam support misc: sram: document new compatible ARM: at91: add secumod register definitions Documentation: dt: atmel-at91: Document secumod bindings memory: atmel-sdramc: use builtin_platform_driver to simplify the code memory: atmel-ebi: fix return value check in at91_ebi_dev_disable() Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 18 11月, 2016 14 次提交
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由 Thierry Reding 提交于
This driver uses the services provided by the BPMP firmware driver to implement a reset driver based on the MRQ_RESET request. Acked-by: NPhilipp Zabel <p.zabel@pengutronix.de> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Thierry Reding 提交于
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由 Stephen Warren 提交于
The BPMP implements some services which must be represented by separate nodes. For example, it can provide access to certain I2C controllers, and the I2C bindings represent each I2C controller as a device tree node. Update the binding to describe how the BPMP supports this. Signed-off-by: NStephen Warren <swarren@nvidia.com> Acked-by: NRob Herring <robh@kernel.org> Acked-by: NJon Hunter <jonathanh@nvidia.com> [treding@nvidia.com: renamed bpmp-i2c to i2c as per Rob] Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Stephen Warren 提交于
The Tegra186 BPMP is also a provider of power domains. Enhance the device tree binding to describe this. Signed-off-by: NStephen Warren <swarren@nvidia.com> Acked-by: NRob Herring <robh@kernel.org> Acked-by: NJon Hunter <jonathanh@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Thierry Reding 提交于
The Boot and Power Management Processor (BPMP) is a co-processor found on Tegra SoCs. It is designed to handle the early stages of the boot process and offload power management tasks (such as clocks, resets, powergates, ...) as well as system control services. Compared to the ARM SCPI, the services provided by BPMP are message- based rather than method-based. The BPMP firmware driver provides the services to transmit data to and receive data from the BPMP. Users can also register a Message ReQuest (MRQ), for which a service routine will be run when a corresponding event is received from the firmware. A set of messages, called the BPMP ABI, are specified for a number of different services provided by the BPMP (such as clocks or resets). Based on work by Sivaram Nair <sivaramn@nvidia.com> and Joseph Lo <josephl@nvidia.com>. Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Thierry Reding 提交于
The Inter-VM communication (IVC) is a communication protocol which is designed for interprocessor communication (IPC) or the communication between the hypervisor and the virtual machine with a guest OS. Message channels are used to communicate between processors. They are backed by DRAM or SRAM, so care must be taken to maintain coherence of data. The IVC library maintains memory-based descriptors for the transmission and reception channels as well as the data coherence of the counter and payload. Clients, such as the driver for the BPMP firmware, can use the library to exchange messages with remote processors. Based on work by Peter Newman <pnewman@nvidia.com> and Joseph Lo <josephl@nvidia.com>. Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Joseph Lo 提交于
The Boot and Power Management Processor (BPMP) is a co-processor found in Tegra SoCs. It is designed to handle the early stages of the boot process as well as to offload power management tasks (such as clocks, resets, powergates, ...). The binding document defines the resources that are used by the BPMP firmware, which implements the interprocessor communication (IPC) between the CPU and the BPMP. Signed-off-by: NJoseph Lo <josephl@nvidia.com> Acked-by: NStephen Warren <swarren@nvidia.com> Acked-by: NRob Herring <robh@kernel.org> Acked-by: NJon Hunter <jonathanh@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Thierry Reding 提交于
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由 Dan Carpenter 提交于
We have to use the _safe version of list_for_each() because we're freeing the pointer as we go along. (This might not show up testing depending on what config options you have enabled). Fixes: 0fe88461 ("mailbox: Add Tegra HSP driver") Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Thierry Reding 提交于
This driver exposes a mailbox interface for interprocessor communication using the Hardware Synchronization Primitives (HSP) module's doorbell mechanism. There are multiple HSP instances and they provide additional features such as shared mailboxes, shared and arbitrated semaphores. A driver for a remote processor can use the mailbox client provided by the HSP driver and build an IPC protocol on top of this synchronization mechanism. Based on work by Joseph Lo <josephl@nvidia.com>. Acked-by: NJassi Brar <jaswinder.singh@linaro.org> Signed-off-by: NThierry Reding <treding@nvidia.com>
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https://github.com/mbgg/linux-mediatek由 Olof Johansson 提交于
- prepare mtk-scpsys to for multi soc support - add support for mt2701 to mtk-scpsys * tag 'v4.9-next-soc' of https://github.com/mbgg/linux-mediatek: soc: mediatek: Add MT2701 scpsys driver soc: mediatek: Refine scpsys to support multiple platform Signed-off-by: NOlof Johansson <olof@lixom.net>
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由 Olof Johansson 提交于
Merge tag 'davinci-for-v4.10/drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers This pull request adds two new drivers for better support for LCD found on DaVinci DA8xx devices. They allow configuration of memory interface and bus priorities on the SoC to allow sufficient bandwidth for the LCD and prevent underruns. The DT bindings have been reviewed by Rob and patches have been reviewed by Kevin. * tag 'davinci-for-v4.10/drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: bus: davinci: add support for da8xx bus master priority control memory: davinci: add support for da8xx DDR2/mDDR controller Signed-off-by: NOlof Johansson <olof@lixom.net>
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由 Olof Johansson 提交于
Merge tag 'qcom-drivers-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/drivers Qualcomm ARM Based Driver Updates for v4.10 * Fixup QCOM SCM to use devm_reset_controller_register * Add QCOM pinctrl to Qualcomm MAINTAINERS entry * Add PM8994 regulator definitions * Add stub for WCNSS_CTRL API * tag 'qcom-drivers-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux: firmware: qcom: scm: Use devm_reset_controller_register() MAINTAINERS: add drivers/pinctrl/qcom to ARM/QUALCOMM SUPPORT pinctrl: pm8994: add pad voltage regulator defines soc: qcom: wcnss_ctrl: Stub wcnss_ctrl API Signed-off-by: NOlof Johansson <olof@lixom.net>
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由 Olof Johansson 提交于
Merge tag 'v4.10-rockchip-drivers1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/drivers Changes to the power-domain driver including counter presets now being set by firmware on the rk3399, avoiding infite loops when powering on/off a domain and actually returning an error if power-domain addition fails. The last part requires usage of the (new in 4.9-rc1) pm_genpd_remove functionality as well. * tag 'v4.10-rockchip-drivers1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: soc: rockchip: power-domain: Handle errors from of_genpd_add_provider_onecell soc: rockchip: power-domain: use pm_genpd_remove in error cleanup soc: rockchip: power-domain: avoid infinite loop soc: rockchip: power-domain: Don't (incorrectly) set rk3399 up/down counts Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 16 11月, 2016 2 次提交
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由 Mirza Krak 提交于
The Generic Memory Interface bus can be used to connect high-speed devices such as NOR flash, FPGAs, DSPs... Signed-off-by: NMirza Krak <mirza.krak@gmail.com> Tested-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com> Tested-on: Colibri T20/T30 on EvalBoard V3.x and GMI-Memory Board Acked-by: NJon Hunter <jonathanh@nvidia.com> [treding@nvidia.com: symmetry and coding style OCD] Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Mirza Krak 提交于
Document the devicetree bindings for the Generic Memory Interface (GMI) bus driver found on Tegra SOCs. Signed-off-by: NMirza Krak <mirza.krak@gmail.com> Tested-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com> Tested-on: Colibri T20/T30 on EvalBoard V3.x and GMI-Memory Board Acked-by: NRob Herring <robh@kernel.org> Signed-off-by: NThierry Reding <treding@nvidia.com>
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- 15 11月, 2016 11 次提交
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由 Joseph Lo 提交于
Add DT binding for the Hardware Synchronization Primitives (HSP). The HSP is designed for the processors to share resources and communicate with one another. A set of hardware synchronization primitives for interprocessor communication (IPC) is provided. IPC protocols can use use these hardware synchronization primitives when operating between processors in an AMP configuration. Signed-off-by: NJoseph Lo <josephl@nvidia.com> Acked-by: NStephen Warren <swarren@nvidia.com> Acked-by: NRob Herring <robh@kernel.org> Acked-by: NJon Hunter <jonathanh@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Thierry Reding 提交于
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由 Thierry Reding 提交于
The various error messages refer to the PM domains as "power domain", "genpd" and "PM domain". That's confusing, so convert all error messages to use the most prominent: "PM domain". Acked-by: NJon Hunter <jonathanh@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Jon Hunter 提交于
Commit 3fe57710 ("PM / Domains: Add support for removing PM domains") add support for removing PM domains. Update the Tegra PMC driver to remove PM domains if we fail to add a provider for the PM domain. Please note that the code under 'power_on_cleanup' label does not really belong in the clean-up error path for tegra_powergate_add(). To keep the error path simple, remove this label and move the associated code to where it needs to be invoked. Signed-off-by: NJon Hunter <jonathanh@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Jon Hunter 提交于
Commit 7eb231c3 ("PM / Domains: Convert pm_genpd_init() to return an error code") updated pm_genpd_init() to return an error code. Update the Tegra PMC driver to check the return value from pm_genpd_init() and handle any errors returned. Signed-off-by: NJon Hunter <jonathanh@nvidia.com> [treding@nvidia.com: use pr_err() instead of dev_err()] Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Thierry Reding 提交于
Use pr_err() instead of dev_err() when the pmc->dev field has not been initialized yet and add a few missing error messages as well as remove duplicate ones. Based on work by Jon Hunter <jonathanh@nvidia.com>. Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Jon Hunter 提交于
The function tegra_io_rail_prepare() converts the IO rail ID into a bit position that is used to check the status and control the IO rail in the PMC registers. However, rather than converting to a bit position it is more useful to convert to a bit-mask because this is what is actually used. By doing so the BIT() marco only needs to be used once and we can use the IO_DPD_REQ_CODE_MASK when checking for erroneous rail IDs. Signed-off-by: NJon Hunter <jonathanh@nvidia.com> [treding@nvidia.com: rebase and rename bit -> mask] Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Jon Hunter 提交于
It is possible for the public functions, tegra_io_rail_power_on/off() to be called before the PMC device has been probed. If this happens then the pmc->clk member will not be initialised and the call to clk_get_rate() in tegra_io_rail_prepare() will return zero and lead to a divide-by-zero exception. The function clk_get_rate() will return zero if a NULl clk pointer is passed. Therefore, rather that checking if pmc->clk is initialised, fix this by checking the return value for clk_get_rate() to make sure it is not zero. Signed-off-by: NJon Hunter <jonathanh@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Laxman Dewangan 提交于
I/O pins on Tegra SoCs are grouped into so-called I/O pads. Each such pad can be used to control the common voltage signal level and power state of the pins in the given pad. I/O pads can be powered down even if the system is active, which can save power from that I/O interface. For SoC generations prior to Tegra124 the I/O pad voltage is automatically detected and hence the system software doesn't need to configure it. However, starting with Tegra210 the detection logic has been removed, so explicit control of the I/O pad voltage by system software is required. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Thierry Reding 提交于
Bit definitions are sorted in decreasing order by offset. Apply the same ordering to all definitions. Signed-off-by: NThierry Reding <treding@nvidia.com>
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由 Laxman Dewangan 提交于
The function tegra_pmc_readl() returns the u32 type data and hence change the data type of variable where this data is stored to u32 type. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Reviewed-by: NJon Hunter <jonathanh@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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