Commit Graph

92 Commits

Author SHA1 Message Date
Linus Torvalds
2d945dde7f This is the usual collection of primarily clk driver updates. The big part of
the diff is all the new Qualcomm clk drivers added for a few SoCs they're
 working on. The other two vendors with significant work this cycle are Renesas
 and Amlogic. Renesas adds a bunch of clks to existing drivers and supports some
 new SoCs while Amlogic is starting a significant refactoring to simplify their
 code.
 
 The core framework gained a pair of helpers to get the 'struct device' or
 'struct device_node' associated with a 'struct clk_hw'. Some associated KUnit
 tests were added for these simple helpers as well. Beyond that core change
 there are lots of little fixes throughout the clk drivers for the stuff we see
 every day, wrong clk driver data that affects tree topology or supported
 frequencies, etc. They're not found until the clks are actually used by some
 consumer device driver.
 
 New Drivers:
  - Global, display, gpu, video, camera, tcsr, and rpmh clock controller for the
    Qualcomm Milos SoC
  - Camera, display, GPU, and video clock controllers for Qualcomm QCS615
  - Video clock controller driver for Qualcomm SM6350
  - Camera clock controller driver for Qualcomm SC8180X
  - I3C clocks and resets on Renesas RZ/G3E
  - Expanded Serial Peripheral Interface (xSPI) clocks and resets on
    Renesas RZ/V2H(P) and RZ/V2N
  - SPI (RSPI) clocks and resets on Renesas RZ/V2H(P)
  - SDHI and I2C clocks on Renesas RZ/T2H and RZ/N2H
  - Ethernet clocks and resets on Renesas RZ/G3E
  - Initial support for the Renesas RZ/T2H (R9A09G077) and RZ/N2H
    (R9A09G087) SoCs
  - Ethernet clocks and resets on Renesas RZ/V2H and RZ/V2N
  - Timer, I2C, watchdog, GPU, and USB2.0 clocks and resets on Renesas
    RZ/V2N
 
 Updates:
  - Support atomic PWMs in the PWM clk driver
  - clk_hw_get_dev() and clk_hw_get_of_node() helpers
  - Replace round_rate() with determine_rate() in various clk drivers
  - Convert clk DT bindings to DT schema format for DT validation
  - Various clk driver cleanups and refactorings from static analysis tools and
    possibly real humans
  - A lot of little fixes here and there to things like clk tree topology,
    missing frequencies, flagging clks as critical, etc. The full details are in
    the commits and sub-tree merge logs
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "This is the usual collection of primarily clk driver updates.

  The big part of the diff is all the new Qualcomm clk drivers added for
  a few SoCs they're working on. The other two vendors with significant
  work this cycle are Renesas and Amlogic. Renesas adds a bunch of clks
  to existing drivers and supports some new SoCs while Amlogic is
  starting a significant refactoring to simplify their code.

  The core framework gained a pair of helpers to get the 'struct device'
  or 'struct device_node' associated with a 'struct clk_hw'. Some
  associated KUnit tests were added for these simple helpers as well.

  Beyond that core change there are lots of little fixes throughout the
  clk drivers for the stuff we see every day, wrong clk driver data that
  affects tree topology or supported frequencies, etc. They're not found
  until the clks are actually used by some consumer device driver.

  New Drivers:
   - Global, display, gpu, video, camera, tcsr, and rpmh clock
     controller for the Qualcomm Milos SoC
   - Camera, display, GPU, and video clock controllers for Qualcomm
     QCS615
   - Video clock controller driver for Qualcomm SM6350
   - Camera clock controller driver for Qualcomm SC8180X
   - I3C clocks and resets on Renesas RZ/G3E
   - Expanded Serial Peripheral Interface (xSPI) clocks and resets on
     Renesas RZ/V2H(P) and RZ/V2N
   - SPI (RSPI) clocks and resets on Renesas RZ/V2H(P)
   - SDHI and I2C clocks on Renesas RZ/T2H and RZ/N2H
   - Ethernet clocks and resets on Renesas RZ/G3E
   - Initial support for the Renesas RZ/T2H (R9A09G077) and RZ/N2H
     (R9A09G087) SoCs
   - Ethernet clocks and resets on Renesas RZ/V2H and RZ/V2N
   - Timer, I2C, watchdog, GPU, and USB2.0 clocks and resets on Renesas
     RZ/V2N

  Updates:
   - Support atomic PWMs in the PWM clk driver
   - clk_hw_get_dev() and clk_hw_get_of_node() helpers
   - Replace round_rate() with determine_rate() in various clk drivers
   - Convert clk DT bindings to DT schema format for DT validation
   - Various clk driver cleanups and refactorings from static analysis
     tools and possibly real humans
   - A lot of little fixes here and there to things like clk tree
     topology, missing frequencies, flagging clks as critical, etc"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (216 commits)
  clk: clocking-wizard: Fix the round rate handling for versal
  clk: Fix typos
  clk: spacemit: ccu_pll: fix error return value in recalc_rate callback
  clk: tegra: periph: Make tegra_clk_periph_ops static
  clk: tegra: periph: Fix error handling and resolve unsigned compare warning
  clk: imx: scu: convert from round_rate() to determine_rate()
  clk: imx: pllv4: convert from round_rate() to determine_rate()
  clk: imx: pllv3: convert from round_rate() to determine_rate()
  clk: imx: pllv2: convert from round_rate() to determine_rate()
  clk: imx: pll14xx: convert from round_rate() to determine_rate()
  clk: imx: pfd: convert from round_rate() to determine_rate()
  clk: imx: frac-pll: convert from round_rate() to determine_rate()
  clk: imx: fracn-gppll: convert from round_rate() to determine_rate()
  clk: imx: fixup-div: convert from round_rate() to determine_rate()
  clk: imx: cpu: convert from round_rate() to determine_rate()
  clk: imx: busy: convert from round_rate() to determine_rate()
  clk: imx: composite-93: remove round_rate() in favor of determine_rate()
  clk: imx: composite-8m: remove round_rate() in favor of determine_rate()
  clk: qcom: Remove redundant pm_runtime_mark_last_busy() calls
  clk: imx: Remove redundant pm_runtime_mark_last_busy() calls
  ...
2025-07-31 13:36:27 -07:00
Alex Elder
c479d7cf06
reset: spacemit: add support for SpacemiT CCU resets
Implement reset support for SpacemiT CCUs.  A SpacemiT reset controller
device is an auxiliary device associated with a clock controller (CCU).

This patch defines the reset controllers for the MPMU, APBC, and MPMU
CCUs, which already define clock controllers.  It also adds RCPU, RCPU2,
and ACPB2 CCUs, which only define resets.

Signed-off-by: Alex Elder <elder@riscstar.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Yixun Lan <dlan@gentoo.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20250702113709.291748-6-elder@riscstar.com
Signed-off-by: Yixun Lan <dlan@gentoo.org>
2025-07-07 21:54:16 +08:00
Junhui Liu
360a7a6477 reset: canaan: add reset driver for Kendryte K230
Add support for the resets on Canaan Kendryte K230 SoC. The driver
support CPU0, CPU1, L2 cache flush, hardware auto clear and software
clear resets.

Tested-by: Chen Wang <unicorn_wang@outlook.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Link: https://lore.kernel.org/r/20250613-k230-reset-v4-2-e5266d2be440@pigmoral.tech
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2025-06-27 17:45:51 +02:00
Lad Prabhakar
e3911d7f86 reset: Add USB2PHY port reset driver for Renesas RZ/V2H(P)
Implement a USB2PHY port reset driver for the Renesas RZ/V2H(P) SoC.
Enable control of USB2.0 PHY reset and power-down operations, including
assert and deassert functionalities for the PHY.

Leverage device tree (OF) data to support future SoCs with similar USB2PHY
hardware but varying register configurations. Define initialization values
and control register settings to ensure flexibility for upcoming platforms.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Link: https://lore.kernel.org/r/20250415195131.281060-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2025-05-05 15:18:35 +02:00
Michal Wilczynski
4a65326311 reset: thead: Add TH1520 reset controller driver
Add reset controller driver for the T-HEAD TH1520 SoC that manages
hardware reset lines for various subsystems. The driver currently
implements support for GPU reset control, with infrastructure in place
to extend support for NPU and Watchdog Timer resets in future updates.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
Link: https://lore.kernel.org/r/20250303152511.494405-3-m.wilczynski@samsung.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2025-04-07 10:19:27 +02:00
Frank Li
6b64fde5c1 reset: imx: Add SCU reset driver for i.MX8QXP and i.MX8QM
Add System Controller Firmware(SCU) reset driver for i.MX8QM and i.MX8QXP.
SCU Manage resets for peripherals such as MIPI CSI. Currently, support two
reset sources: IMX_SC_R_CSI_0 and IMX_SC_R_CSI_1.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250210-8qxp_camera-v3-2-324f5105accc@nxp.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2025-03-13 09:06:27 +01:00
Jerome Brunet
2c138ee335 reset: amlogic: move drivers to a dedicated directory
The meson reset driver will be split in two part, one implemeting the ops,
the other providing the platform driver support. This will be done to
facilitate the addition of the auxiliary bus support.

To avoid making a mess in drivers/reset/ while doing so, move the amlogic
reset drivers to a dedicated directory.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20240910-meson-rst-aux-v5-7-60be62635d3e@baylibre.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2024-10-01 10:40:32 +02:00
Théo Lebrun
487b1b32e3 reset: eyeq: add platform driver
Add Mobileye EyeQ reset controller driver, for EyeQ5, EyeQ6L and EyeQ6H
SoCs. Instances belong to a shared register region called OLB and gets
spawned as auxiliary device to the platform driver for clock.

There is one OLB instance for EyeQ5 and EyeQ6L. There are seven OLB
instances on EyeQ6H; three have a reset controller embedded:
 - West and east get handled by the same compatible.
 - Acc (accelerator) is another one.

Each instance vary in the number and types of reset domains.
Instances with single domain expect a single cell, others two.

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240730-mbly-reset-v2-2-00b870a6a2ff@bootlin.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2024-09-02 12:12:41 +02:00
Philipp Zabel
fd88137bfb reset: tegra-bpmp: allow building under COMPILE_TEST
The Tegra BPMP reset driver can be compiled without TEGRA_BPMP being
enabled. Allow it to be built under COMPILE_TEST.

Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20240625-reset-compile-bpmp-v1-1-647e846303d8@pengutronix.de
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2024-07-01 09:57:48 +02:00
Philipp Zabel
4f6a43ad2b reset: zynqmp: allow building under COMPILE_TEST
The ZynqMP reset driver can be compiled without ARCH_ZYNQMP being
enabled. Allow it to be built under COMPILE_TEST.

Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20240621-reset-compile-zynqmp-v1-1-ede43ab18101@pengutronix.de
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2024-06-24 13:52:45 +02:00
Shengjiu Wang
fe125601d1 reset: imx8mp-audiomix: Add AudioMix Block Control reset driver
Add support for the resets on i.MX8MP Audio Block Control module,
which includes the EARC PHY software reset and EARC controller
software reset. The reset controller is created using the auxiliary
device framework and set up in the clock driver.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/1719200345-32006-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2024-06-24 11:27:04 +02:00
Philipp Zabel
1359fc272b reset: sti: allow building under COMPILE_TEST
The STIH407 reset driver can be compiled without ARCH_STI being
enabled. Allow it to be built under COMPILE_TEST.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20240621-reset-compile-sti-v1-1-b7a66ce29911@pengutronix.de
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2024-06-24 09:50:31 +02:00
Krzysztof Kozlowski
cee544a40e reset: gpio: Add GPIO-based reset controller
Add a simple driver to control GPIO-based resets using the reset
controller API for the cases when the GPIOs are shared and reset should
be coordinated.  The driver is expected to be used by reset core
framework for ad-hoc reset controllers.

Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240129115216.96479-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2024-02-21 11:53:25 +01:00
Linus Torvalds
e4c8d01865 ARM: SoC drivers for 6.5
Nothing surprising in the SoC specific drivers, with the usual updates:
 
  * Added or improved SoC driver support for Tegra234, Exynos4121, RK3588,
    as well as multiple Mediatek and Qualcomm chips
 
  * SCMI firmware gains support for multiple SMC/HVC transport and version
    3.2 of the protocol
 
  * Cleanups amd minor changes for the reset controller, memory controller,
    firmware and sram drivers
 
  * Minor changes to amd/xilinx, samsung, tegra, nxp, ti, qualcomm,
    amlogic and renesas SoC specific drivers
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Merge tag 'soc-drivers-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "Nothing surprising in the SoC specific drivers, with the usual
  updates:

   - Added or improved SoC driver support for Tegra234, Exynos4121,
     RK3588, as well as multiple Mediatek and Qualcomm chips

   - SCMI firmware gains support for multiple SMC/HVC transport and
     version 3.2 of the protocol

   - Cleanups amd minor changes for the reset controller, memory
     controller, firmware and sram drivers

   - Minor changes to amd/xilinx, samsung, tegra, nxp, ti, qualcomm,
     amlogic and renesas SoC specific drivers"

* tag 'soc-drivers-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (118 commits)
  dt-bindings: interrupt-controller: Convert Amlogic Meson GPIO interrupt controller binding
  MAINTAINERS: add PHY-related files to Amlogic SoC file list
  drivers: meson: secure-pwrc: always enable DMA domain
  tee: optee: Use kmemdup() to replace kmalloc + memcpy
  soc: qcom: geni-se: Do not bother about enable/disable of interrupts in secondary sequencer
  dt-bindings: sram: qcom,imem: document qdu1000
  soc: qcom: icc-bwmon: Fix MSM8998 count unit
  dt-bindings: soc: qcom,rpmh-rsc: Require power-domains
  soc: qcom: socinfo: Add Soc ID for IPQ5300
  dt-bindings: arm: qcom,ids: add SoC ID for IPQ5300
  soc: qcom: Fix a IS_ERR() vs NULL bug in probe
  soc: qcom: socinfo: Add support for new fields in revision 19
  soc: qcom: socinfo: Add support for new fields in revision 18
  dt-bindings: firmware: scm: Add compatible for SDX75
  soc: qcom: mdt_loader: Fix split image detection
  dt-bindings: memory-controllers: drop unneeded quotes
  soc: rockchip: dtpm: use C99 array init syntax
  firmware: tegra: bpmp: Add support for DRAM MRQ GSCs
  soc/tegra: pmc: Use devm_clk_notifier_register()
  soc/tegra: pmc: Simplify debugfs initialization
  ...
2023-06-29 15:22:19 -07:00
Jacky Huang
e4bb55d6cc reset: Add Nuvoton ma35d1 reset driver support
This driver supports individual IP reset for the MA35D1. The reset
control registers are a subset of the system control registers.

Signed-off-by: Jacky Huang <ychuang3@nuvoton.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-06-05 13:18:09 +02:00
Neil Armstrong
ac59ed9cdb reset: oxnas: remove obsolete reset driver
Due to lack of maintainance and stall of development for a few years now,
and since no new features will ever be added upstream, remove support
for OX810 and OX820 peripheral reset.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230331-topic-oxnas-upstream-remove-v1-17-5bd58fd1dd1f@linaro.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2023-05-08 09:28:31 +02:00
Emil Renner Berthing
69bfec7548 reset: Create subdirectory for StarFive drivers
This moves the StarFive JH7100 reset driver to a new subdirectory in
preparation for adding more StarFive reset drivers.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
2023-04-05 15:43:49 +01:00
Conor Dooley
05f9e36370 reset: add polarfire soc reset support
Add support for the resets on Microchip's PolarFire SoC (MPFS).
Reset control is a single register, wedged in between registers for
clock control. To fit with existed DT etc, the reset controller is
created using the aux device framework & set up in the clock driver.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Daire McNamara <daire.mcnamara@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220909123123.2699583-6-conor.dooley@microchip.com
2022-09-14 10:55:17 +03:00
Linus Torvalds
fad235ed43 ARM: SoC: late updates for 6.0
These updates came in after I had already tagged the branches,
 but they still seem appropriate for 6.0 and most of them were
 part of linux-next through other trees.
 
  - The reset controller tree adds one new driver for the TI TPS380x
    power management chip and a few minor changes in other drivers
 
  - Apple M1 now has a DT entry for the NVMe controller after the
    driver was merged, and has a new mailing list in the MAINTAINERS
    file.
 
  - Fixes for USB on the Socionext Uniphier platforms and the
    network controller on Intel Cyclone5.
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Merge tag 'arm-late-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull more ARM SoC updates from Arnd Bergmann:
 "These updates came in after I had already tagged the branches, but
  they still seem appropriate for 6.0 and most of them were part of
  linux-next through other trees.

   - The reset controller tree adds one new driver for the TI TPS380x
     power management chip and a few minor changes in other drivers

   - Apple M1 now has a DT entry for the NVMe controller after the
     driver was merged, and has a new mailing list in the MAINTAINERS
     file.

   - Fixes for USB on the Socionext Uniphier platforms and the network
     controller on Intel Cyclone5"

* tag 'arm-late-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  arm64: dts: uniphier: Fix USB interrupts for PXs3 SoC
  ARM: dts: uniphier: Fix USB interrupts for PXs2 SoC
  arm64: dts: apple: t8103: Add ANS2 NVMe nodes
  reset: tps380x: Fix spelling mistake "Voltags" -> "Voltage"
  reset: tps380x: Add TPS380x device driver supprt
  dt-bindings: reset: Add TPS380x documentation
  dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G2UL USBPHY Control bindings
  ARM: dts: add EMAC AXI settings for Cyclone5
  reset: reset-simple should depends on HAS_IOMEM
  Revert "reset: microchip-sparx5: allow building as a module"
  reset: a10sr: allow building under COMPILE_TEST
  reset: allow building of reset simple driver if expert config selected
  reset: microchip-sparx5: allow building as a module
  arm64: dts: apple: Re-parent ANS2 power domains
  MAINTAINERS: add ARM/APPLE MACHINE mailing list
2022-08-05 10:02:33 -07:00
Marco Felsch
8a4e6154fb reset: tps380x: Add TPS380x device driver supprt
The TI TPS380x family [1] is a voltage supervisor with a dedicated
manual reset (mr) line input and a reset output. The chip(s) have a
build in reset delay, depending on the chip partnumber. This simple
driver addresses this so the cosumer don't need to care about it.

[1] https://www.ti.com/product/TPS3801

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
[p.zabel@pengutronix.de: drop Todo comment about min/typ/max reset time]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20220530092226.748644-2-m.felsch@pengutronix.de
2022-07-27 10:58:25 +02:00
Qin Jian
dbf018be52 reset: Add Sunplus SP7021 reset driver
Add reset driver for Sunplus SP7021 SoC.

Signed-off-by: Qin Jian <qinjian@cqplus1.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-07-08 14:23:39 +02:00
Robert Marko
5cd3921d16 reset: Add Delta TN48M CPLD reset controller
Delta TN48M CPLD exposes resets for the following:
* 88F7040 SoC
* 88F6820 SoC
* 98DX3265 switch MAC-s
* 88E1680 PHY-s
* 88E1512 PHY
* PoE PSE controller

Controller supports only self clearing resets.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Link: https://lore.kernel.org/r/20220131133049.77780-5-robert.marko@sartura.hr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-25 09:59:35 +01:00
Emil Renner Berthing
0be3a1595b reset: starfive-jh7100: Add StarFive JH7100 reset driver
Add a driver for the StarFive JH7100 reset controller.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
2021-12-16 17:24:23 +01:00
Biju Das
bee0855970 reset: renesas: Add RZ/G2L usbphy control driver
Add support for RZ/G2L USBPHY Control driver. It mainly controls
reset and power down of the USB/PHY.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20210719121938.6532-5-biju.das.jz@bp.renesas.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2021-07-27 15:54:39 +02:00
Linus Torvalds
071e5aceeb ARM: Drivers for 5.14
- Reset controllers: Adding support for Microchip Sparx5 Switch.
 
 - Memory controllers: ARM Primecell PL35x SMC memory controller
   driver cleanups and improvements.
 
 - i.MX SoC drivers: Power domain support for i.MX8MM and i.MX8MN.
 
 - Rockchip: RK3568 power domains support + DT binding updates,
   cleanups.
 
 - Qualcomm SoC drivers: Amend socinfo with more SoC/PMIC details,
   including support for MSM8226, MDM9607, SM6125 and SC8180X.
 
 - ARM FFA driver: "Firmware Framework for ARMv8-A", defining
   management interfaces and communication (including bus model)
   between partitions both in Normal and Secure Worlds.
 
 - Tegra Memory controller changes, including major rework to deal
   with identity mappings at boot and integration with ARM SMMU
   pieces.
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Merge tag 'arm-drivers-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM driver updates from Olof Johansson:

 - Reset controllers: Adding support for Microchip Sparx5 Switch.

 - Memory controllers: ARM Primecell PL35x SMC memory controller driver
   cleanups and improvements.

 - i.MX SoC drivers: Power domain support for i.MX8MM and i.MX8MN.

 - Rockchip: RK3568 power domains support + DT binding updates,
   cleanups.

 - Qualcomm SoC drivers: Amend socinfo with more SoC/PMIC details,
   including support for MSM8226, MDM9607, SM6125 and SC8180X.

 - ARM FFA driver: "Firmware Framework for ARMv8-A", defining management
   interfaces and communication (including bus model) between partitions
   both in Normal and Secure Worlds.

 - Tegra Memory controller changes, including major rework to deal with
   identity mappings at boot and integration with ARM SMMU pieces.

* tag 'arm-drivers-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (120 commits)
  firmware: turris-mox-rwtm: add marvell,armada-3700-rwtm-firmware compatible string
  firmware: turris-mox-rwtm: show message about HWRNG registration
  firmware: turris-mox-rwtm: fail probing when firmware does not support hwrng
  firmware: turris-mox-rwtm: report failures better
  firmware: turris-mox-rwtm: fix reply status decoding function
  soc: imx: gpcv2: add support for i.MX8MN power domains
  dt-bindings: add defines for i.MX8MN power domains
  firmware: tegra: bpmp: Fix Tegra234-only builds
  iommu/arm-smmu: Use Tegra implementation on Tegra186
  iommu/arm-smmu: tegra: Implement SID override programming
  iommu/arm-smmu: tegra: Detect number of instances at runtime
  dt-bindings: arm-smmu: Add Tegra186 compatible string
  firmware: qcom_scm: Add MDM9607 compatible
  soc: qcom: rpmpd: Add MDM9607 RPM Power Domains
  soc: renesas: Add support to read LSI DEVID register of RZ/G2{L,LC} SoC's
  soc: renesas: Add ARCH_R9A07G044 for the new RZ/G2L SoC's
  dt-bindings: soc: rockchip: drop unnecessary #phy-cells from grf.yaml
  memory: emif: remove unused frequency and voltage notifiers
  memory: fsl_ifc: fix leak of private memory on probe failure
  memory: fsl_ifc: fix leak of IO mapping on probe failure
  ...
2021-07-10 09:46:20 -07:00
Gabriel Fernandez
590ff40e06 reset: stm32mp1: remove stm32mp1 reset
st32mp1 RCC reset driver was moved into stm32mp1 RCC clock driver.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Link: https://lore.kernel.org/r/20210617051814.12018-7-gabriel.fernandez@foss.st.com
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-06-28 16:08:48 -07:00
Steen Hegelund
453ed4283b reset: mchp: sparx5: add switch reset driver
The Sparx5 Switch SoC has a number of components that can be reset
indiviually, but at least the Switch Core needs to be in a well defined
state at power on, when any of the Sparx5 drivers starts to access the
Switch Core, this reset driver is available.

The reset driver is loaded early via the postcore_initcall interface, and
will then be available for the other Sparx5 drivers (SGPIO, SwitchDev etc)
that are loaded next, and the first of them to be loaded can perform the
one-time Switch Core reset that is needed.

The driver has protection so that the system busses, DDR controller, PCI-E
and ARM A53 CPU and a few other subsystems are not touched by the reset.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2021-05-10 09:40:05 +02:00
Damien Le Moal
5a2308da9f
riscv: Add Canaan Kendryte K210 reset controller
Add a reset controller driver for the Canaan Kendryte K210 SoC. This
driver relies on its syscon compatible parent node (sysctl) for its
register mapping. Default this driver compilation to y when the
SOC_CANAAN option is selected.

The MAINTAINERS file is updated, adding the entry "CANAAN/KENDRYTE K210
SOC RESET CONTROLLER DRIVER" with myself listed as maintainer for this
driver.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-01-14 15:08:53 -08:00
Álvaro Fernández Rojas
aac025437f reset: add BCM6345 reset controller driver
Add support for resetting blocks through the Linux reset controller
subsystem for BCM63xx SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <F.fainelli@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-11-17 21:51:42 +01:00
Nicolas Saenz Julienne
abffc82aae reset: Add Raspberry Pi 4 firmware reset controller
Raspberry Pi 4's co-processor controls some of the board's HW
initialization process, but it's up to Linux to trigger it when
relevant. Introduce a reset controller capable of interfacing with
RPi4's co-processor that models these firmware initialization routines as
reset lines.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200629161845.6021-3-nsaenzjulienne@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-18 13:01:10 +02:00
Jim Quinlan
4cf176e523 reset: Add Broadcom STB RESCAL reset controller
On BCM7216 there is a special purpose reset controller named RESCAL
(reset calibration) which is necessary for SATA and PCIe0/1 to operate
correctly. This commit adds support for such a reset controller to be
available.

Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-06 10:02:03 +01:00
Dilip Kota
c9aef213e3 reset: intel: Add system reset controller driver
Add driver for the reset controller present on Intel
Gateway SoCs for performing reset management of the
devices present on the SoC. Driver also registers a
reset handler to peform the entire device reset.

Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-03 11:01:27 +01:00
Tomer Maimon
9c81b2ccf8 reset: npcm: add NPCM reset controller driver
Add Nuvoton NPCM BMC reset controller driver.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-01-02 12:25:05 +01:00
Sudeep Holla
c8ae9c2da1 reset: Add support for resets provided by SCMI
On some ARM based systems, a separate Cortex-M based System Control
Processor(SCP) provides the overall power, clock, reset and system
control. System Control and Management Interface(SCMI) Message Protocol
is defined for the communication between the Application Cores(AP)
and the SCP.

Adds support for the resets provided using SCMI protocol for performing
reset management of various devices present on the SoC. Various reset
functionalities are achieved by the means of different ARM SCMI device
operations provided by the ARM SCMI framework.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2019-08-12 12:23:02 +01:00
Arnd Bergmann
6f2185f8e3 Reset controller changes for v5.1
This adds the include/linux/reset directory to MAINTAINERS for reset
 specific headers and adds headers for sunxi and socfpga in there to
 get rid of a few extern function declarations.
 There is a new reset driver for the Broadcom STB reset controller and
 the i.MX7 system reset controller driver is extended to support i.MX8MQ
 as well. Finally, there is a new header with reset id constants for
 the Meson G12A SoC, which has a reset controller identical to Meson AXG
 and thus can reuse its driver and DT bindings.
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Merge tag 'reset-for-5.1' of git://git.pengutronix.de/git/pza/linux into arm/drivers

Reset controller changes for v5.1

This adds the include/linux/reset directory to MAINTAINERS for reset
specific headers and adds headers for sunxi and socfpga in there to
get rid of a few extern function declarations.
There is a new reset driver for the Broadcom STB reset controller and
the i.MX7 system reset controller driver is extended to support i.MX8MQ
as well. Finally, there is a new header with reset id constants for
the Meson G12A SoC, which has a reset controller identical to Meson AXG
and thus can reuse its driver and DT bindings.

* tag 'reset-for-5.1' of git://git.pengutronix.de/git/pza/linux:
  dt-bindings: reset: meson: add g12a bindings
  reset: imx7: Add support for i.MX8MQ IP block variant
  reset: imx7: Add plubming to support multiple IP variants
  reset: Add Broadcom STB SW_INIT reset controller driver
  dt-bindings: reset: Add document for Broadcom STB reset controller
  reset: socfpga: declare socfpga_reset_init in a header file
  reset: sunxi: declare sun6i_reset_init in a header file
  MAINTAINERS: use include/linux/reset for reset controller related headers
  dt-bindings: reset: imx7: Document usage on i.MX8MQ SoCs

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-15 17:21:32 +01:00
Arnd Bergmann
59f527dd7a arm64: zynqmp: SoC changes for v5.1
- Extend firmware interface with reset, nvmem,
   power management and power domain support
 
 - Add reset, nvmem driver, power management and
   power domain drivers
 -
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Merge tag 'zynqmp-soc-for-v5.1' of https://github.com/Xilinx/linux-xlnx into arm/drivers

arm64: zynqmp: SoC changes for v5.1

- Extend firmware interface with reset, nvmem,
  power management and power domain support

- Add reset, nvmem driver, power management and
  power domain drivers
-

* tag 'zynqmp-soc-for-v5.1' of https://github.com/Xilinx/linux-xlnx:
  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
  drivers: soc: xilinx: Add ZynqMP PM driver
  firmware: xilinx: Implement ZynqMP power management APIs
  dt-bindings: soc: Add ZynqMP PM bindings
  nvmem: zynqmp: Added zynqmp nvmem firmware driver
  dt-bindings: nvmem: Add bindings for ZynqMP nvmem driver
  firmware: xilinx: Add zynqmp_pm_get_chipid() API
  reset: reset-zynqmp: Adding support for Xilinx zynqmp reset controller.
  dt-bindings: reset: Add bindings for ZynqMP reset driver
  firmware: xilinx: Add reset API's

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-15 17:16:45 +01:00
Nava kishore Manne
62f0d7dc3b reset: reset-zynqmp: Adding support for Xilinx zynqmp reset controller.
Add a reset controller driver for Xilinx Zynq UltraScale+ MPSoC.
The zynqmp reset-controller has the ability to reset lines
connected to different blocks and peripheral in the Soc.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2019-01-29 14:08:40 +01:00
Florian Fainelli
77750bc089 reset: Add Broadcom STB SW_INIT reset controller driver
Add support for resetting blocks through the Linux reset controller
subsystem when reset lines are provided through a SW_INIT-style reset
controller on Broadcom STB SoCs.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-01-28 11:16:04 +01:00
Kunihiko Hayashi
3eb8f765f5 reset: uniphier-usb3: Rename to reset-uniphier-glue
This driver works for controlling the reset lines including USB3
glue layer, however, this can be applied to other glue layers.
Now this patch renames the driver from "reset-uniphier-usb3" to
"reset-uniphier-glue".

At the same time, this changes CONFIG_RESET_UNIPHIER_USB3 to
CONFIG_RESET_UNIPHIER_GLUE.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-01-07 16:38:51 +01:00
Dinh Nguyen
b3ca9888f3 reset: socfpga: add an early reset driver for SoCFPGA
Create a separate reset driver that uses the reset operations in
reset-simple. The reset driver for the SoCFPGA platform needs to
register early in order to be able bring online timers that needed
early in the kernel bootup.

We do not need this early reset driver for Stratix10, because on
arm64, Linux does not need the timers are that in reset. Linux is
able to run just fine with the internal armv8 timer. Thus, we use
a new binding "altr,stratix10-rst-mgr" for the Stratix10 platform.
The Stratix10 platform will continue to use the reset-simple platform
driver, while the 32-bit platforms(Cyclone5/Arria5/Arria10) will use
the early reset driver.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
[p.zabel@pengutronix.de: fixed socfpga of_device_id in reset-simple]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-01-07 16:38:50 +01:00
Sibi Sankar
eea2926b0a reset: qcom: PDC Global (Power Domain Controller) reset controller
Add reset controller for SDM845 SoCs to control reset signals provided
by PDC Global for Modem, Compute, Display, GPU, Debug, AOP, Sensors,
Audio, SP and APPS

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-10-05 10:33:44 +02:00
Jerome Brunet
d903779b58 reset: meson: add meson audio arb driver
The Amlogic Audio ARB is a simple device which enables or
disables the access of Audio FIFOs to DDR on AXG based SoC.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-07-20 18:17:31 +02:00
Kunihiko Hayashi
499fef09a3 reset: uniphier: add USB3 core reset control
Add a reset line to enable USB3 core implemented in UniPhier SoCs.

This reuses only the reset operations in reset-simple, because
the reset-simple doesn't handle any SoC-dependent clocks and resets.
This reset line is included in the USB3 glue layer, and it's necessary
to enable clocks and deassert resets of the layer before using this
reset line.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-07-16 12:15:55 +02:00
Sibi Sankar
5ecb065165 reset: qcom: AOSS (always on subsystem) reset controller
Add reset controller driver for Qualcomm SDM845 SoC to
control reset signals provided by AOSS for Modem, Venus
ADSP, GPU, Camera, Wireless, Display subsystem

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-07-16 12:15:51 +02:00
Gabriel Fernandez
197858b685 reset: stm32mp1: Enable stm32mp1 reset driver
stm32mp1 RCC IP 1 has a reset SET register and a reset CLEAR register.

Writing '0' on reset SET register has no effect
Writing '1' on reset SET register
	activates the reset of the corresponding peripheral

Writing '0' on reset CLEAR register	has no effect
Writing '1' on reset CLEAR register
	releases the reset of the corresponding peripheral

See Documentation/devicetree/bindings/clock/st,stm32mp1-rcc.txt

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-03-27 10:44:04 +02:00
Linus Torvalds
cf9b0772f2 ARM: SoC driver updates for v4.15
This branch contains platform-related driver updates for ARM and ARM64,
 these are the areas that bring the changes:
 
 New drivers:
  - Driver support for Renesas R-Car V3M (R8A77970)
  - Power management support for Amlogic GX
  - A new driver for the Tegra BPMP thermal sensor
  - A new bus driver for Technologic Systems NBUS
 
 Changes for subsystems that prefer to merge through arm-soc:
  - The usual updates for reset controller drivers from Philipp Zabel,
    with five added drivers for SoCs in the arc, meson, socfpa, uniphier
    and mediatek families.
  - Updates to the ARM SCPI and PSCI frameworks, from Sudeep Holla,
    Heiner Kallweit and Lorenzo Pieralisi.
 
 Changes specific to some ARM-based SoC
  - The Freescale/NXP DPAA QBMan drivers from PowerPC can now work
    on ARM as well.
  - Several changes for power management on Broadcom SoCs
  - Various improvements on Qualcomm, Broadcom, Amlogic, Atmel, Mediatek
  - Minor Cleanups for Samsung, TI OMAP SoCs
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "This branch contains platform-related driver updates for ARM and
  ARM64, these are the areas that bring the changes:

  New drivers:

   - driver support for Renesas R-Car V3M (R8A77970)

   - power management support for Amlogic GX

   - a new driver for the Tegra BPMP thermal sensor

   - a new bus driver for Technologic Systems NBUS

  Changes for subsystems that prefer to merge through arm-soc:

   - the usual updates for reset controller drivers from Philipp Zabel,
     with five added drivers for SoCs in the arc, meson, socfpa,
     uniphier and mediatek families

   - updates to the ARM SCPI and PSCI frameworks, from Sudeep Holla,
     Heiner Kallweit and Lorenzo Pieralisi

  Changes specific to some ARM-based SoC

   - the Freescale/NXP DPAA QBMan drivers from PowerPC can now work on
     ARM as well

   - several changes for power management on Broadcom SoCs

   - various improvements on Qualcomm, Broadcom, Amlogic, Atmel,
     Mediatek

   - minor Cleanups for Samsung, TI OMAP SoCs"

[ NOTE! This doesn't work without the previous ARM SoC device-tree pull,
  because the R8A77970 driver is missing a header file that came from
  that pull.

  The fact that this got merged afterwards only fixes it at this point,
  and bisection of that driver will fail if/when you walk into the
  history of that driver.           - Linus ]

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (96 commits)
  soc: amlogic: meson-gx-pwrc-vpu: fix power-off when powered by bootloader
  bus: add driver for the Technologic Systems NBUS
  memory: omap-gpmc: Remove deprecated gpmc_update_nand_reg()
  soc: qcom: remove unused label
  soc: amlogic: gx pm domain: add PM and OF dependencies
  drivers/firmware: psci_checker: Add missing destroy_timer_on_stack()
  dt-bindings: power: add amlogic meson power domain bindings
  soc: amlogic: add Meson GX VPU Domains driver
  soc: qcom: Remote filesystem memory driver
  dt-binding: soc: qcom: Add binding for rmtfs memory
  of: reserved_mem: Accessor for acquiring reserved_mem
  of/platform: Generalize /reserved-memory handling
  soc: mediatek: pwrap: fix fatal compiler error
  soc: mediatek: pwrap: fix compiler errors
  arm64: mediatek: cleanup message for platform selection
  soc: Allow test-building of MediaTek drivers
  soc: mediatek: place Kconfig for all SoC drivers under menu
  soc: mediatek: pwrap: add support for MT7622 SoC
  soc: mediatek: pwrap: add common way for setup CS timing extenstion
  soc: mediatek: pwrap: add MediaTek MT6380 as one slave of pwrap
  ..
2017-11-16 16:05:01 -08:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Philipp Zabel
542befbb18 Merge branch 'reset/arc' into reset/next
Merge the AXS10x driver, which is also merged into
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git for-next
2017-10-18 15:59:30 +02:00
Philipp Zabel
f0e0ada67d reset: zx2967: use the reset-simple driver
The reset-simple driver can be used without changes.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com>
2017-10-18 15:51:04 +02:00
Philipp Zabel
0af8a13736 reset: stm32: use the reset-simple driver
The reset-simple driver can be used without changes.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Gabriel Fernandez <gabriel.fernandez@st.com>
2017-10-18 15:51:03 +02:00