kernel/linux.git/drivers/power/reset, branch v6.19.11

power: reset: tdx-ec-poweroff: fix restart

2026-03-04T12:21:29+00:00

[ Upstream commit 562357a6310f79e45844c3e980d410a1e8e02ce6 ] During testing, restart occasionally failed on Toradex modules. The issue was traced to an interaction between the EC-based reset/poweroff handler and the PSCI restart handler. While the embedded controller is resetting or powering off the module, the PSCI code may still be invoked, triggering an I2C transaction to the PMIC. This can leave the PMIC I2C in a frozen state. Add a delay after issuing the EC reset or power-off command to give the controller time to complete the operation and avoid falling back to another restart/poweroff provider. Also print an error message if sending the command to the embedded controller fails. Fixes: 18672fe12367 ("power: reset: add Toradex Embedded Controller") Cc: stable@vger.kernel.org Signed-off-by: Emanuele Ghidoli Reviewed-by: Francesco Dolcini Link: https://patch.msgid.link/20260130071208.1184239-1-ghidoliemanuele@gmail.com Signed-off-by: Sebastian Reichel Signed-off-by: Sasha Levin

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

2026-02-26T23:01:15+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

Merge tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2025-12-06T01:29:04+00:00

Pull SoC driver updates from Arnd Bergmann: "This is the first half of the driver changes: - A treewide interface change to the "syscore" operations for power management, as a preparation for future Tegra specific changes - Reset controller updates with added drivers for LAN969x, eic770 and RZ/G3S SoCs - Protection of system controller registers on Renesas and Google SoCs, to prevent trivially triggering a system crash from e.g. debugfs access - soc_device identification updates on Nvidia, Exynos and Mediatek - debugfs support in the ST STM32 firewall driver - Minor updates for SoC drivers on AMD/Xilinx, Renesas, Allwinner, TI - Cleanups for memory controller support on Nvidia and Renesas" * tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (114 commits) memory: tegra186-emc: Fix missing put_bpmp Documentation: reset: Remove reset_controller_add_lookup() reset: fix BIT macro reference reset: rzg2l-usbphy-ctrl: Fix a NULL vs IS_ERR() bug in probe reset: th1520: Support reset controllers in more subsystems reset: th1520: Prepare for supporting multiple controllers dt-bindings: reset: thead,th1520-reset: Add controllers for more subsys dt-bindings: reset: thead,th1520-reset: Remove non-VO-subsystem resets reset: remove legacy reset lookup code clk: davinci: psc: drop unused reset lookup reset: rzg2l-usbphy-ctrl: Add support for RZ/G3S SoC reset: rzg2l-usbphy-ctrl: Add support for USB PWRRDY dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G3S support reset: eswin: Add eic7700 reset driver dt-bindings: reset: eswin: Documentation for eic7700 SoC reset: sparx5: add LAN969x support dt-bindings: reset: microchip: Add LAN969x support soc: rockchip: grf: Add select correct PWM implementation on RK3368 soc/tegra: pmc: Add USB wake events for Tegra234 amba: tegra-ahb: Fix device leak on SMMU enable ...

syscore: Pass context data to callbacks

2025-11-14T09:01:52+00:00

Several drivers can benefit from registering per-instance data along with the syscore operations. To achieve this, move the modifiable fields out of the syscore_ops structure and into a separate struct syscore that can be registered with the framework. Add a void * driver data field for drivers to store contextual data that will be passed to the syscore ops. Acked-by: Rafael J. Wysocki (Intel) Signed-off-by: Thierry Reding

driver: reset: spacemit-p1: add driver for poweroff/reboot

2025-11-03T00:02:10+00:00

This driver implements poweroff/reboot support for the SpacemiT P1 PMIC chip, which is commonly paired with the SpacemiT K1 SoC. The SpacemiT P1 support is implemented as a MFD driver, so the access is done directly through the regmap interface. Reboot or poweroff is triggered by setting a specific bit in a control register, which is automatically cleared by the hardware afterwards. Signed-off-by: Aurelien Jarno Link: https://patch.msgid.link/20251102230352.914421-2-aurelien@aurel32.net Signed-off-by: Sebastian Reichel

driver: reset: th1520-aon: add driver for poweroff/reboot via AON FW

2025-09-19T10:55:20+00:00

This driver implements poweroff/reboot support for T-Head TH1520 SoCs running the AON firmware by sending a message to the AON firmware's WDG part. This is a auxiliary device driver, and expects the AON channel to be passed via the platform_data of the auxiliary device. Signed-off-by: Icenowy Zheng Acked-by: Sebastian Reichel Signed-off-by: Ulf Hansson

Merge tag 'for-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

2025-08-01T04:39:01+00:00

Pull power supply and reset updates from Sebastian Reichel: "Power-supply core: - battery-info: replace any DT specific bits with fwnode usage - replace any device-tree code with generic fwnode based handling Power-supply drivers: - ug3105_battery: use battery-info API - qcom_battmgr: report capacity - qcom_battmgr: support LiPo battery reporting - add missing missing power-supply ref to a bunch of DT bindings - update drivers regarding pm_runtime_autosuspend() usage - misc minor fixes and cleanups Reset drivers: - misc minor cleanups" * tag 'for-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (32 commits) power: supply: core: fix static checker warning power: supply: twl4030_charger: Remove redundant pm_runtime_mark_last_busy() calls power: supply: bq24190: Remove redundant pm_runtime_mark_last_busy() calls MAINTAINERS: rectify file entry in QUALCOMM SMB CHARGER DRIVER power: supply: max1720x correct capacity computation MAINTAINERS: add myself as smbx charger driver maintainer power: supply: pmi8998_charger: rename to qcom_smbx power: supply: qcom_pmi8998_charger: fix wakeirq power: supply: max14577: Handle NULL pdata when CONFIG_OF is not set power: return the correct error code power: reset: POWER_RESET_TORADEX_EC should depend on ARCH_MXC power: supply: cpcap-charger: Fix null check for power_supply_get_by_name power: supply: bq25980_charger: Constify reg_default array power: supply: bq256xx_charger: Constify reg_default array power: reset: at91-sama5d2_shdwc: Refactor wake-up source logging to use dev_info power: reset: qcom-pon: Rename variables to use generic naming power: supply: qcom_battmgr: Add lithium-polymer entry power: supply: qcom_battmgr: Report battery capacity power: supply: bq24190: Free battery_info power: supply: ug3105_battery: Switch to power_supply_batinfo_ocv2cap() ...

power: reset: macsmc-reboot: Add driver for rebooting via Apple SMC

2025-07-24T08:47:33+00:00

This driver implements the reboot/shutdown support exposed by the SMC on Apple Silicon machines, such as Apple M1 Macs. Signed-off-by: Hector Martin Reviewed-by: Alyssa Rosenzweig Reviewed-by: Neal Gompa Reviewed-by: Sebastian Reichel Signed-off-by: Sven Peter Link: https://lore.kernel.org/r/20250610-smc-6-15-v7-7-556cafd771d3@kernel.org Signed-off-by: Lee Jones

power: reset: POWER_RESET_TORADEX_EC should depend on ARCH_MXC

2025-06-22T17:24:55+00:00

The Toradex Embedded Controller is currently only present on Toradex SMARC iMX8MP and iMX95 SoMs. Hence add a dependency on ARCH_MXC, to prevent asking the user about this driver when configuring a kernel without NXP i.MX SoC family support. Fixes: 18672fe12367ed44 ("power: reset: add Toradex Embedded Controller") Signed-off-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/1ef0beb1e09bf914650f9f9885a33af06772540d.1746536287.git.geert+renesas@glider.be Signed-off-by: Sebastian Reichel

power: reset: at91-sama5d2_shdwc: Refactor wake-up source logging to use dev_info

2025-06-22T01:04:51+00:00

Use dev_info() instead of pr_info() for more consistent logging in the driver. [root@sam9x75eb ~]$ dmesg | grep power [ 1.678542] at91-shdwc fffffe10.poweroff: Wake-Up source: WKUP pin Signed-off-by: Mihai Sain Link: https://lore.kernel.org/r/20250610124545.175492-3-mihai.sain@microchip.com Signed-off-by: Sebastian Reichel