linux.git/drivers/power/reset, branch v6.12.80

power: reset: nvmem-reboot-mode: respect cell size for nvmem_cell_write

2026-03-04T12:20:17+00:00

[ Upstream commit 36b05629226413836cfbb3fbe6689cd188bca156 ]

Some platforms expose reboot mode cells that are smaller than an
unsigned int, in which cases lead to write failures. Read the cell
first to determine actual size and only write the number of bytes the
cell can hold.

Fixes: 7a78a7f7695b ("power: reset: nvmem-reboot-mode: use NVMEM as reboot mode write interface")
Signed-off-by: Alexander Koskovich 
Link: https://patch.msgid.link/20251214191529.2470580-1-akoskovich@pm.me
Signed-off-by: Sebastian Reichel 
Signed-off-by: Sasha Levin

power: reset: at91-reset: Optimize at91_reset()

2025-06-19T13:31:31+00:00

[ Upstream commit 62d48983f215bf1dd48665913318101fa3414dcf ]

This patch adds a small optimization to the low-level at91_reset()
function, which includes:
- Removes the extra branch, since the following store operations
  already have proper condition checks.
- Removes the definition of the clobber register r4, since it is
  no longer used in the code.

Fixes: fcd0532fac2a ("power: reset: at91-reset: make at91sam9g45_restart() generic")
Signed-off-by: Alexander Shiyan 
Reviewed-by: Alexandre Belloni 
Link: https://lore.kernel.org/r/20250307053809.20245-1-eagle.alexander923@gmail.com
Signed-off-by: Sebastian Reichel 
Signed-off-by: Sasha Levin

power: reset: ep93xx: add AUXILIARY_BUS dependency

2024-12-05T13:02:30+00:00

[ Upstream commit b6d445f6724deda3fd87fa33358009d947a64c5d ]

This fails to link when compile-testing and the auxiliary bus is not built-in:

x86_64-linux-ld: drivers/power/reset/ep93xx-restart.o: in function `ep93xx_reboot_driver_init':
ep93xx-restart.c:(.init.text+0x11): undefined reference to `__auxiliary_driver_register'
x86_64-linux-ld: drivers/power/reset/ep93xx-restart.o: in function `ep93xx_reboot_driver_exit':
ep93xx-restart.c:(.exit.text+0x8): undefined reference to `auxiliary_driver_unregister'

Add the appropriate dependency.

Fixes: 9fa7cdb4368f ("power: reset: Add a driver for the ep93xx reset")
Signed-off-by: Arnd Bergmann 
Link: https://lore.kernel.org/r/20241111104418.3891756-1-arnd@kernel.org
Signed-off-by: Sebastian Reichel 
Signed-off-by: Sasha Levin

Merge tag 'soc-ep93xx-dt-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2024-09-26T19:00:25+00:00

Pull SoC update from Arnd Bergmann:
 "Convert ep93xx to devicetree

  This concludes a long journey towards replacing the old board files
  with devictree description on the Cirrus Logic EP93xx platform.

  Nikita Shubin has been working on this for a long time, for details
  see the last post on

    https://lore.kernel.org/lkml/20240909-ep93xx-v12-0-e86ab2423d4b@maquefel.me/"

* tag 'soc-ep93xx-dt-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
  dt-bindings: gpio: ep9301: Add missing "#interrupt-cells" to examples
  MAINTAINERS: Update EP93XX ARM ARCHITECTURE maintainer
  soc: ep93xx: drop reference to removed EP93XX_SOC_COMMON config
  net: cirrus: use u8 for addr to calm down sparse
  dmaengine: cirrus: use snprintf() to calm down gcc 13.3.0
  dmaengine: ep93xx: Fix a NULL vs IS_ERR() check in probe()
  pinctrl: ep93xx: Fix raster pins typo
  spi: ep93xx: update kerneldoc comments for ep93xx_spi
  clk: ep93xx: Fix off by one in ep93xx_div_recalc_rate()
  clk: ep93xx: add module license
  dmaengine: cirrus: remove platform code
  ASoC: cirrus: edb93xx: Delete driver
  ARM: ep93xx: soc: drop defines
  ARM: ep93xx: delete all boardfiles
  ata: pata_ep93xx: remove legacy pinctrl use
  pwm: ep93xx: drop legacy pinctrl
  ARM: ep93xx: DT for the Cirrus ep93xx SoC platforms
  ARM: dts: ep93xx: Add EDB9302 DT
  ARM: dts: ep93xx: add ts7250 board
  ARM: dts: add Cirrus EP93XX SoC .dtsi
  ...

power: reset: Add a driver for the ep93xx reset

2024-09-12T14:33:10+00:00

Implement the reset behaviour of the various EP93xx SoCS
in drivers/power/reset.

It used to be located in arch/arm/mach-ep93xx.

Signed-off-by: Nikita Shubin 
Tested-by: Alexander Sverdlin 
Acked-by: Sebastian Reichel 
Acked-by: Vinod Koul 
Signed-off-by: Arnd Bergmann

power: reset: brcmstb: Do not go into infinite loop if reset fails

2024-08-27T17:35:23+00:00

There may be other backup reset methods available, do not halt
here so that other reset methods can be tried.

Signed-off-by: Andrew Davis 
Reviewed-by: Dhruva Gole 
Acked-by: Florian Fainelli 
Link: https://lore.kernel.org/r/20240610142836.168603-5-afd@ti.com
Signed-off-by: Sebastian Reichel

power: reset: brcmstb: Use devm_register_sys_off_handler()

2024-08-27T17:35:23+00:00

Function register_restart_handler() is deprecated. Using this new API
removes our need to keep and manage a struct notifier_block.

Signed-off-by: Andrew Davis 
Reviewed-by: Dhruva Gole 
Acked-by: Florian Fainelli 
Link: https://lore.kernel.org/r/20240610142836.168603-4-afd@ti.com
Signed-off-by: Sebastian Reichel

power: reset: brcmstb: Use syscon_regmap_lookup_by_phandle_args() helper

2024-08-27T17:35:04+00:00

Simplify probe by fetching the regmap and its arguments in one call.

Signed-off-by: Andrew Davis 
Reviewed-by: Dhruva Gole 
Acked-by: Florian Fainelli 
Link: https://lore.kernel.org/r/20240610142836.168603-3-afd@ti.com
Signed-off-by: Sebastian Reichel

power: reset: brcmstb: Use device_get_match_data() for matching

2024-08-27T17:34:01+00:00

Use device_get_match_data() for finding the matching node and fetching
the match data all in one.

Signed-off-by: Andrew Davis 
Acked-by: Florian Fainelli 
Link: https://lore.kernel.org/r/20240610142836.168603-2-afd@ti.com
Signed-off-by: Sebastian Reichel

power: reset: brcmstb: Use normal driver register function

2024-08-27T17:34:01+00:00

The platform_driver_probe() helper is useful when the probe function
is in the _init section, that is not the case here. Use the normal
platform_driver_register() function.

Signed-off-by: Andrew Davis 
Reviewed-by: Dhruva Gole 
Acked-by: Florian Fainelli 
Link: https://lore.kernel.org/r/20240610142836.168603-1-afd@ti.com
Signed-off-by: Sebastian Reichel