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path: root/drivers/reset
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2017-07-19regulator: Convert to using %pOF instead of full_nameRob Herring1-2/+2
Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-07-19reset: make (de)assert report success for self-deasserting reset driversPhilipp Zabel1-6/+25
By now there are drivers using shared reset controls and (de)assert calls on platforms with self-deasserting reset lines and thus reset drivers that do not implement .assert() and .deassert(). As long as the initial state of the reset line is deasserted, there is no reason for a reset_control_assert call to return an error for shared reset controls, or for a reset_control_deassert call to return an error for either shared or exclusive reset controls: after a call to reset_control_deassert the reset line is guaranteed to be deasserted, and after a call to reset_control_assert it is valid for the reset line to stay deasserted for shared reset controls. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2017-07-19reset: Add APIs to manage array of resetsVivek Gautam1-1/+210
Many devices may want to request a bunch of resets and control them. So it's better to manage them as an array. Add APIs to _get() an array of reset_control, reusing the _assert(), _deassert(), and _reset() APIs for single reset controls. Since reset controls already may control multiple reset lines with a single hardware bit, from the user perspective, reset control arrays are not at all different from single reset controls. Note that these APIs don't guarantee that the reset lines managed in the array are handled in any particular order. Cc: Felipe Balbi <balbi@kernel.org> Cc: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org> [p.zabel@pengutronix.de: changed API to hide reset control arrays behind struct reset_control] Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-07-19reset: zx2967: constify zx2967_reset_ops.Arvind Yadav1-1/+1
File size before: text data bss dec hex filename 794 232 0 1026 402 drivers/reset/reset-zx2967.o File size After adding 'const': text data bss dec hex filename 842 184 0 1026 402 drivers/reset/reset-zx2967.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Reviewed-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-07-05Merge tag 'armsoc-drivers' of ↵Linus Torvalds6-14/+415
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Arnd Bergmann: "New SoC specific drivers: - NVIDIA Tegra PM Domain support for newer SoCs (Tegra186 and later) based on the "BPMP" firmware - Clocksource and system controller drivers for the newly added Action Semi platforms (both arm and arm64). Reset subsystem, merged through arm-soc by tradition: - New drivers for Altera Stratix10, TI Keystone and Cortina Gemini SoCs - Various subsystem-wide cleanups Updates for existing SoC-specific drivers - TI GPMC (General Purpose Memory Controller) - Mediatek "scpsys" system controller support for MT6797 - Broadcom "brcmstb_gisb" bus arbitrer - ARM SCPI firmware - Renesas "SYSC" system controller One more driver update was submitted for the Freescale/NXP DPAA data path acceleration that has previously been used on PowerPC chips. I ended up postponing the merge until some API questions for its unusual MMIO access are resolved" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (35 commits) clocksource: owl: Add S900 support clocksource: Add Owl timer soc: renesas: rcar-sysc: Use GENPD_FLAG_ALWAYS_ON firmware: tegra: Fix locking bugs in BPMP soc/tegra: flowctrl: Fix error handling soc/tegra: bpmp: Implement generic PM domains soc/tegra: bpmp: Update ABI header PM / Domains: Allow overriding the ->xlate() callback soc: brcmstb: enable drivers for ARM64 and BMIPS soc: renesas: Rework Kconfig and Makefile logic reset: Add the TI SCI reset driver dt-bindings: reset: Add TI SCI reset binding reset: use kref for reference counting soc: qcom: smsm: Improve error handling, quiesce probe deferral cpufreq: scpi: use new scpi_ops functions to remove duplicate code firmware: arm_scpi: add support to populate OPPs and get transition latency dt-bindings: reset: Add reset manager offsets for Stratix10 memory: omap-gpmc: add error message if bank-width property is absent memory: omap-gpmc: make dts snippet include semicolon reset: Add a Gemini reset controller ...
2017-06-06reset: Add the TI SCI reset driverAndrew F. Davis3-0/+278
Some TI Keystone family of SoCs contain a system controller (like the Power Management Micro Controller (PMMC) on 66AK2G SoCs) that manage the low-level device control (like clocks, resets etc) for the various hardware modules present on the SoC. These device control operations are provided to the host processor OS through a communication protocol called the TI System Control Interface (TI SCI) protocol. This patch adds a reset driver that communicates to the system controller over the TI SCI protocol for performing reset management of various devices present on the SoC. Various reset functionalities are achieved by the means of different TI SCI device operations provided by the TI SCI framework. Signed-off-by: Andrew F. Davis <afd@ti.com> [s-anna@ti.com: documentation changes, revised commit message] Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> [p.zabel@pengutronix.de: const struct reset_control_ops] Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-06-06reset: use kref for reference countingPhilipp Zabel1-8/+15
Use kref for reference counting and enjoy the advantages of refcount_t. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-05-24reset: hi6220: Set module license so that it can be loadedJeremy Linton1-0/+2
The hi6220_reset driver can be built as a standalone module yet it cannot be loaded because it depends on GPL exported symbols. Lets set the module license so that the module loads, and things like the on-board kirin drm starts working. Signed-off-by: Jeremy Linton <lintonrjeremy@gmail.com> Reviewed-by: Xinliang Liu <xinliang.liu@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-05-24reset: Add a Gemini reset controllerLinus Walleij3-0/+118
The Cortina Systems Gemini reset controller is a simple 32bit register with self-deasserting reset lines. It is accessed using regmap over syscon. Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-05-24reset: ti_syscon: Rename TI_SYSCON_RESET to RESET_TI_SYSCONSuman Anna2-2/+2
Rename the current Kconfig name used for the TI SYSCON Reset driver from TI_SYSCON_RESET to RESET_TI_SYSCON to match the convention used for all the reset drivers present at the base reset folder. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-05-15reset: sti: Use devm_kcalloc() in syscfg_reset_controller_register()Markus Elfring1-4/+2
* A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "devm_kcalloc". * Replace the specification of a data structure by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. * Delete the local variable "size" which became unnecessary with this refactoring. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-05-09Merge tag 'armsoc-drivers' of ↵Linus Torvalds11-62/+373
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Olof Johansson: "Driver updates for ARM SoCs: Reset subsystem, merged through arm-soc by tradition: - Make bool drivers explicitly non-modular - New support for i.MX7 and Arria10 reset controllers PATA driver for Palmchip BK371 (acked by Tejun) Power domain drivers for i.MX (GPC, GPCv2) - Moved out of mach-imx for GPC - Bunch of tweaks, fixes, etc PMC support for Tegra186 SoC detection support for Renesas RZ/G1H and RZ/G1N Move Tegra flow controller driver from mach directory to drivers/soc - (Power management / CPU power driver) Misc smaller tweaks for other platforms" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits) soc: pm-domain: Fix the mangled urls soc: renesas: rcar-sysc: Add support for R-Car H3 ES2.0 soc: renesas: rcar-sysc: Add support for fixing up power area tables soc: renesas: Register SoC device early soc: imx: gpc: add workaround for i.MX6QP to the GPC PD driver dt-bindings: imx-gpc: add i.MX6 QuadPlus compatible soc: imx: gpc: add defines for domain index soc: imx: Add GPCv2 power gating driver dt-bindings: Add GPCv2 power gating driver ARM/clk: move the ICST library to drivers/clk ARM: plat-versatile: remove stale clock header ARM: keystone: Drop PM domain support for k2g soc: ti: Add ti_sci_pm_domains driver dt-bindings: Add TI SCI PM Domains PM / Domains: Do not check if simple providers have phandle cells PM / Domains: Add generic data pointer to genpd data struct soc/tegra: Add initial flowctrl support for Tegra132/210 soc/tegra: flowctrl: Add basic platform driver soc/tegra: Move Tegra flowctrl driver ARM: tegra: Remove unnecessary inclusion of flowctrl header ...
2017-04-04reset: add exported __reset_control_get, return NULL if optionalPhilipp Zabel1-6/+16
Rename the internal __reset_control_get/put functions to __reset_control_get/put_internal and add an exported __reset_control_get equivalent to __of_reset_control_get that takes a struct device parameter. This avoids the confusing call to __of_reset_control_get in the non-DT case and fixes the devm_reset_control_get_optional function to return NULL if RESET_CONTROLLER is enabled but dev->of_node == NULL. Fixes: bb475230b8e5 ("reset: make optional functions really optional") Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-28reset: uniphier: add NAND and eMMC reset controlMasahiro Yamada1-0/+17
Add reset lines for the Denali NAND controller on all UniPhier SoCs, for the Cadence eMMC controller on LD11/LD20 SoCs. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-15reset: sunxi: fix for 64-bit compilationAndre Przywara1-8/+10
The Allwinner reset controller has 32-bit registers, so translating the reset cell number into a register and bit offset should not use any architecture dependent data size. Otherwise this breaks for 64-bit architectures like arm64. Fix this by making it clear that it's the hardware register width which matters here in the calculation. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-15reset: Add Altera Arria10 SR Reset ControllerThor Thayer3-0/+146
This patch adds the reset controller functionality for Peripheral PHYs to the Arria10 System Resource Chip. Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-15reset: Add i.MX7 SRC reset driverAndrey Smirnov3-0/+167
Add reset controller driver exposing various reset faculties, implemented by System Reset Controller IP block. Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-08reset-socfpga: Fix nr_resets propertyRojhalat Ibrahim1-6/+7
The SoC-FPGA reset controller driver defines NR_BANKS as 4 and uses that define for two unrelated purposes. It is used 1. as an increment for reset line banks which are 32-bit registers with 4-byte aligned addresses. 2. as the total number of reset line banks which together with the number of resets per bank (32) limits the total number of useable resets to 128 and the highest useable reset ID to 127. This is clearly wrong as there are resets with higher IDs than 127 defined in include/dt-bindings/reset/altr,rst-mgr.h and altr,rst-mgr-a10.h. The patch introduces a new define BANK_INCREMENT for calculating the register addresses as before and increases NR_BANKS to 8 for useable reset IDs up to 255. Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-08reset: uniphier: fix non static symbol warningsWei Yongjun1-10/+10
Fixes the following sparse warnings: drivers/reset/reset-uniphier.c:68:34: warning: symbol 'uniphier_sld3_sys_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:73:34: warning: symbol 'uniphier_pro4_sys_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:81:34: warning: symbol 'uniphier_pro5_sys_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:89:34: warning: symbol 'uniphier_pxs2_sys_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:103:34: warning: symbol 'uniphier_ld11_sys_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:108:34: warning: symbol 'uniphier_ld20_sys_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:137:34: warning: symbol 'uniphier_sld3_mio_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:157:34: warning: symbol 'uniphier_pro5_sd_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:174:34: warning: symbol 'uniphier_ld4_peri_reset_data' was not declared. Should it be static? drivers/reset/reset-uniphier.c:187:34: warning: symbol 'uniphier_pro4_peri_reset_data' was not declared. Should it be static? Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-08reset: pistachio: make it explicitly non-modularPaul Gortmaker1-7/+2
The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_PISTACHIO drivers/reset/Kconfig: bool "Pistachio Reset Driver" if COMPILE_TEST ...meaning that it currently is not being built as a module by anyone. Lets remove the couple traces of modular infrastructure use, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Damien Horsley <Damien.Horsley@imgtec.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-08reset: ath79: make it explicitly non-modularPaul Gortmaker1-19/+8
The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_ATH79 drivers/reset/Kconfig: bool "AR71xx Reset Driver" if COMPILE_TEST ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. We explicitly disallow a driver unbind, since that doesn't have a sensible use case anyway, and it allows us to drop the ".remove" code for non-modular drivers. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: Alban Bedel <albeu@free.fr> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Alban Bedel <albeu@free.fr> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-08reset: oxnas: make it explicitly non-modularPaul Gortmaker1-4/+2
The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_OXNAS drivers/reset/Kconfig: bool ...meaning that it currently is not being built as a module by anyone. Lets remove the couple traces of modular infrastructure use, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. Cc: linux-oxnas@lists.tuxfamily.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-03-08reset: meson: make it explicitly non-modularPaul Gortmaker1-8/+4
The Kconfig currently controlling compilation of this code is: arch/arm/mach-meson/Kconfig:menuconfig ARCH_MESON arch/arm/mach-meson/Kconfig: bool "Amlogic Meson SoCs" arch/arm64/Kconfig.platforms:config ARCH_MESON arch/arm64/Kconfig.platforms: bool "Amlogic Platforms" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: Carlo Caione <carlo@caione.org> Cc: Kevin Hilman <khilman@baylibre.com> Cc: linux-amlogic@lists.infradead.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-02-24Merge tag 'armsoc-drivers' of ↵Linus Torvalds9-16/+289
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Arnd Bergmann: "Driver updates for ARM SoCs. A handful of driver changes this time around. The larger changes are: - Reset drivers for hi3660 and zx2967 - AHCI driver for Davinci, acked by Tejun and brought in here due to platform dependencies - Cleanups of atmel-ebi (External Bus Interface) - Tweaks for Rockchip GRF (General Register File) usage (kitchensink misc register range on the SoCs) - PM domains changes for support of two new ZTE SoCs (zx296718 and zx2967)" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (53 commits) soc: samsung: pmu: Add register defines for pad retention control reset: make zx2967 explicitly non-modular reset: core: fix reset_control_put soc: samsung: pm_domains: Read domain name from the new label property soc: samsung: pm_domains: Remove message about failed memory allocation soc: samsung: pm_domains: Remove unused name field soc: samsung: pm_domains: Use full names in subdomains registration log sata: ahci-da850: un-hardcode the MPY bits sata: ahci-da850: add a workaround for controller instability sata: ahci: export ahci_do_hardreset() locally sata: ahci-da850: implement a workaround for the softreset quirk sata: ahci-da850: add device tree match table sata: ahci-da850: get the sata clock using a connection id soc: samsung: pmu: Remove duplicated define for ARM_L2_OPTION register memory: atmel-ebi: Enable the SMC clock if specified soc: samsung: pmu: Remove unused and duplicated defines memory: atmel-ebi: Properly handle multiple reference to the same CS memory: atmel-ebi: Fix the test to enable generic SMC logic soc: samsung: pm_domains: Add new Exynos5433 compatible soc: samsung: pmu: Add dummy support for Exynos5433 SoC ...
2017-02-17reset: fix shared reset triggered_count decrement on errorJerome Brunet1-1/+1
For a shared reset, when the reset is successful, the triggered_count is incremented when trying to call the reset callback, so that another device sharing the same reset line won't trigger it again. If the reset has not been triggered successfully, the trigger_count should be decremented. The code does the opposite, and decrements the trigger_count on success. As a consequence, another device sharing the reset will be able to trigger it again. Fixed be removing negation in from of the error code of the reset function. Fixes: 7da33a37b48f ("reset: allow using reset_control_reset with shared reset") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-02-02reset: make zx2967 explicitly non-modularPaul Gortmaker1-7/+0
The Kconfig currently controlling compilation of this code is: config RESET_ZX2967 bool "ZTE ZX2967 Reset Driver ...meaning that it currently is not being built as a module by anyone. Lets remove the couple traces of modular infrastructure use, so that when reading the driver there is no doubt it is builtin-only. Since builtin_platform_driver() was already in use, the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. We don't replace module.h with init.h since the file does not appear to use __init prefix anywhere. Cc: Jun Nie <jun.nie@linaro.org> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Reviewed-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-02-01reset: core: fix reset_control_putHeiner Kallweit1-1/+1
Commit "reset: make optional functions really optional" missed to adjust one check in reset_control_put, causing a NULL pointer access for optional resets. Fixes: bb475230b8e5 "reset: make optional functions really optional" Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-20reset: make optional functions really optionalRamiro Oliveira1-10/+39
The *_get_optional_* functions weren't really optional so this patch makes them really optional. These *_get_optional_* functions will now return NULL instead of an error if no matching reset phandle is found in the DT, and all the reset_control_* functions now accept NULL rstc pointers. Signed-off-by: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-20reset: Change shared flag from int to boolRamiro Oliveira1-4/+4
Since the new parameter being added is going to be a bool this patch changes the shared flag from int to bool to match the new parameter. Signed-off-by: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-20reset: uniphier: add compatible string for LD11 SD-reset blockMasahiro Yamada1-0/+4
The LD11 SoC is equipped with not only MIO-reset but also SD-reset for controlling RST_n pin of the eMMC device. Update the binding document and remove unneeded "." from each line in itemization. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-20reset: zx2967: add reset controller driver for ZTE's zx2967 familyBaoyou Xie3-0/+113
This patch adds reset controller driver for ZTE's zx2967 family. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Reviewed-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-12reset: constify reset_control_ops structuresBhumika Goyal1-1/+1
Declare reset_control_ops structures as const as they are only stored in the ops field of a reset_controller_dev structure. This field is of type const struct reset_control_ops *, so reset_control_ops structures having this property can be declared as const. Done using Coccinelle: @r1 disable optional_qualifier@ identifier i; position p; @@ static struct reset_control_ops i@p={...}; @ok1@ identifier r1.i; position p; struct ti_syscon_reset_data data; @@ data.rcdev.ops=&i@p; @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct reset_control_ops i; File size before: drivers/reset/reset-ti-syscon.o text data bss dec hex filename 1329 240 0 1569 621 drivers/reset/reset-ti-syscon.o File size after: drivers/reset/reset-ti-syscon.o text data bss dec hex filename 1377 192 0 1569 621 drivers/reset/reset-ti-syscon.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-09reset: hisilicon: add reset-hi3660Zhangfei Gao3-0/+134
Add hi3660 reset driver Example of dts usage: iomcu_rst: iomcu_rst_controller { compatible = "hisilicon,hi3660-reset"; hisi,rst-syscon = <&iomcu>; #reset-cells = <2>; }; i2c0: i2c@..... { ... resets = <&iomcu_rst 0x20 3>; /* offset: 0x20; bit: 3 */ ... }; Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-01-09reset: ti_syscon: fix a ti_syscon_reset_status issueJiancheng Xue1-2/+2
If STATUS_SET was not set, ti_syscon_reset_status would always return 0 no matter whether the status_bit was set or not. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Fixes: cc7c2bb1493c ("reset: add TI SYSCON based reset driver") Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-12-16Merge tag 'armsoc-drivers' of ↵Linus Torvalds16-325/+133
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Arnd Bergmann: "Driver updates for ARM SoCs, including a couple of newly added drivers: - A new driver for the power management controller on TI Keystone - Support for the prerelease "SCPI" firmware protocol that ended up being shipped by Amlogic in their GXBB SoC. - A soc_device can now be matched using a glob from inside the kernel, when another driver wants to know the specific chip it is running on and cannot find out from DT, firmware or hardware. - Renesas SoCs now support identification through the soc_device interface, both in user space and kernel. - Renesas r8a7743 and r8a7745 gain support for their system controller - A new checking module for the ARM "PSCI" (not to be confused with "SCPI" mentioned above) firmware interface. - A new driver for the Tegra GMI memory interface - Support for the Tegra firmware interfaces with their power management controllers As usual, the updates for the reset controller framework are merged here, as they tend to touch multiple SoCs as well, including a new driver for the Oxford (now Broadcom) OX820 chip and the Tegra bpmp interface. The existing drivers for Atmel, Qualcomm, NVIDIA, TI Davinci, and Rockchips SoCs see some further updates" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (76 commits) misc: sram: remove useless #ifdef drivers: psci: Allow PSCI node to be disabled drivers: psci: PSCI checker module soc: renesas: Identify SoC and register with the SoC bus firmware: qcom: scm: Return PTR_ERR when devm_clk_get fails firmware: qcom: scm: Remove core, iface and bus clocks dependency dt-bindings: firmware: scm: Add MSM8996 DT bindings 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() ARM: shmobile: Document DT bindings for Product Register soc: renesas: rcar-sysc: add R8A7745 support reset: Add Tegra BPMP reset driver 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 mailbox: tegra-hsp: Use after free in tegra_hsp_remove_doorbells() mailbox: Add Tegra HSP driver firmware: arm_scpi: add support for pre-v1.0 SCPI compatible ...
2016-11-19Merge tag 'tegra-for-4.10-reset' of ↵Olof Johansson5-0/+76
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: Olof Johansson <olof@lixom.net>
2016-11-18reset: Add Tegra BPMP reset driverThierry Reding5-0/+76
This driver uses the services provided by the BPMP firmware driver to implement a reset driver based on the MRQ_RESET request. Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-11-14reset: allow using reset_control_reset with shared resetMartin Blumenstingl1-6/+37
Some SoCs (for example Amlogic GXBB) implement a reset controller which only supports a reset pulse (triggered via reset_control_reset). At the same time multiple devices (in case of the Amlogic GXBB SoC both USB PHYs) are sharing the same reset line. This patch allows using reset_control_reset also for shared resets. There are limitations though: reset_control_reset can only be used if reset_control_assert was not used yet. reset_control_assert can only be used if reset_control_reset was not used yet. For shared resets the reset is only triggered once for the lifetime of the reset_control instance (the reset can be triggered again if all consumers of that specific reset_control are gone, as the reset framework will free the reset_control instance in that case). Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-24reset: lpc18xx: make it explicitly non-modularPaul Gortmaker1-27/+5
The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_LPC18XX drivers/reset/Kconfig: bool "LPC18xx/43xx Reset Driver" if COMPILE_TEST drivers/reset/Kconfig: default ARCH_LPC18XX or arch/arm/Kconfig:config ARCH_LPC18XX arch/arm/Kconfig: bool "NXP LPC18xx/LPC43xx" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. We explicitly disallow a driver unbind, since that doesn't have a sensible use case anyway, and it allows us to drop the ".remove" code for non-modular drivers. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-24reset: zynq: make it explicitly non-modularPaul Gortmaker1-6/+4
The Makefile/Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_ZYNQ drivers/reset/Kconfig: bool "ZYNQ Reset Driver" if COMPILE_TEST drivers/reset/Kconfig: default ARCH_ZYNQ or drivers/reset/Makefile:obj-$(CONFIG_ARCH_ZYNQ) += reset-zynq.o arch/arm/mach-zynq/Kconfig:config ARCH_ZYNQ arch/arm/mach-zynq/Kconfig: bool "Xilinx Zynq ARM Cortex A9 Platform" if ARCH_MULTI_V7 ...meaning that it currently is not being built as a module by anyone. Lets remove the few remaining traces of modular macro usage, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: "Sören Brinkmann" <soren.brinkmann@xilinx.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-24reset: sunxi: make it explicitly non-modularPaul Gortmaker1-7/+2
The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_SUNXI drivers/reset/Kconfig: bool "Allwinner SoCs Reset Driver" if COMPILE_TEST && !ARCH_SUNXI drivers/reset/Kconfig: default ARCH_SUNXI or arch/arm/mach-sunxi/Kconfig:menuconfig ARCH_SUNXI arch/arm/mach-sunxi/Kconfig: bool "Allwinner SoCs" if ARCH_MULTI_V7 ...meaning that it currently is not being built as a module by anyone. Lets remove the few remaining traces of modular macro usage, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-24reset: socfpga: make it explicitly non-modularPaul Gortmaker1-6/+4
The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_SOCFPGA drivers/reset/Kconfig: bool "SoCFPGA Reset Driver" if COMPILE_TEST drivers/reset/Kconfig: default ARCH_SOCFPGA or arch/arm/mach-socfpga/Kconfig:menuconfig ARCH_SOCFPGA arch/arm/mach-socfpga/Kconfig: bool "Altera SOCFPGA family" if ARCH_MULTI_V7 ...meaning that it currently is not being built as a module by anyone. Lets remove the small amount of modular evidence that remains, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: Steffen Trumtrar <s.trumtrar@pengutronix.de> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-24reset: berlin: make it explicitly non-modularPaul Gortmaker1-8/+4
The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_BERLIN drivers/reset/Kconfig: bool "Berlin Reset Driver" if COMPILE_TEST drivers/reset/Kconfig: default ARCH_BERLIN or arch/arm/mach-berlin/Kconfig:menuconfig ARCH_BERLIN arch/arm/mach-berlin/Kconfig: bool "Marvell Berlin SoCs" if ARCH_MULTI_V7 or arch/arm64/Kconfig.platforms:config ARCH_BERLIN arch/arm64/Kconfig.platforms: bool "Marvell Berlin SoC Family" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: Antoine Tenart <antoine.tenart@free-electrons.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-22reset: uniphier: rename MIO reset to SD reset for Pro5, PXs2, LD20 SoCsMasahiro Yamada1-8/+8
I made a mistake as for naming for this block. The MIO block is not implemented for these 3 SoCs in the first place. The current naming will be a trouble if an SoC with both MIO and SD-ctrl blocks appear in the future. This driver has just been merged in the previous merge window. Rename it before the release. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-20reset: oxnas: Add OX820 supportNeil Armstrong1-0/+1
In order to support the Oxford Semiconductor OX820 SoC, add a new compatible string. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-20reset: sti: Remove STiH415/6 reset supportPeter Griffin4-265/+0
Support for STiH415/6 SoCs is being removed from the kernel because the platforms are obsolete. This patch removes the reset drivers for these SoC's. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-08-30reset: hi6220: allow to compile test driver on other architecturesPhilipp Zabel2-2/+3
Also remove the RESET_CONTROLLER dependency, this Kconfig file is included inside the menuconfig already. Cc: Chen Feng <puck.chen@hisilicon.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-08-30reset: zynq: add driver Kconfig optionPhilipp Zabel2-1/+7
Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Cc: Moritz Fischer <moritz.fischer@ettus.com> Cc: Sören Brinkmann <soren.brinkmann@xilinx.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-08-30reset: sunxi: add driver Kconfig optionPhilipp Zabel2-1/+7
Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-08-30reset: stm32: add driver Kconfig optionPhilipp Zabel2-1/+7
Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Gabriel Fernandez <gabriel.fernandez@st.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-23 19:11:10 +0300