kernel/linux.git/drivers/watchdog, branch v6.6

Merge tag 'linux-watchdog-6.6-rc1' of git://www.linux-watchdog.org/linux-watchdog

2023-09-06T16:19:12+00:00

Pull watchdog updates from Wim Van Sebroeck: - add marvell GTI watchdog driver - add support for Amlogic-T7 SoCs - document the IPQ5018 watchdog compatible - enable COMPILE_TEST for more watchdog device drivers - core: stop watchdog when executing poweroff command - other small improvements and fixes * tag 'linux-watchdog-6.6-rc1' of git://www.linux-watchdog.org/linux-watchdog: (21 commits) watchdog: Add support for Amlogic-T7 SoCs watchdog: Add a new struct for Amlogic-GXBB driver dt-bindings: watchdog: Add support for Amlogic-T7 SoCs dt-bindings: watchdog: qcom-wdt: document IPQ5018 watchdog: imx2_wdt: Improve dev_crit() message watchdog: stm32: Drop unnecessary of_match_ptr() watchdog: sama5d4: readout initial state watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load watchdog: core: stop watchdog when executing poweroff command watchdog: pm8916_wdt: Remove redundant of_match_ptr() watchdog: xilinx_wwdt: Use div_u64() in xilinx_wwdt_start() watchdog: starfive: Remove #ifdef guards for PM related functions watchdog: s3c2410: Fix potential deadlock on &wdt->lock watchdog:rit_wdt: Add support for WDIOF_CARDRESET dt-bindings: watchdog: ti,rti-wdt: Add support for WDIOF_CARDRESET watchdog: Enable COMPILE_TEST for more drivers watchdog: advantech_ec_wdt: fix Kconfig dependencies watchdog: Explicitly include correct DT includes Watchdog: Add marvell GTI watchdog driver dt-bindings: watchdog: marvell GTI system watchdog driver ...

watchdog: Add support for Amlogic-T7 SoCs

2023-08-25T14:19:15+00:00

Compared with the previous Amlogic-GXBB, the watchdog of Amlogic-T7 has a different reset enable bit. Signed-off-by: Huqiang Qin Reviewed-by: Dmitry Rokosov Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230802033222.4024946-4-huqiang.qin@amlogic.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: Add a new struct for Amlogic-GXBB driver

2023-08-25T14:19:14+00:00

Add a new structure wdt_params to describe the watchdog difference of different chips. Signed-off-by: Huqiang Qin Reviewed-by: Dmitry Rokosov Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230802033222.4024946-3-huqiang.qin@amlogic.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: imx2_wdt: Improve dev_crit() message

2023-08-25T14:19:13+00:00

After issuing a "poweroff" command the board goes through the expected power-off sequence and turns it off completely: systemd-shutdown[1]: Powering off. imx2-wdt 30280000.watchdog: Device shutdown: Expect reboot! reboot: Power down The "Expect reboot!" message is misleading because in the power-off case, no reboot is expected to happen at all. Avoid the confusion by removing the "Expect reboot!" message. Signed-off-by: Fabio Estevam Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230822135255.1013981-1-festevam@gmail.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: stm32: Drop unnecessary of_match_ptr()

2023-08-25T14:19:12+00:00

With COMPILE_TEST recently enabled, 0-day reports a warning: drivers/watchdog/stm32_iwdg.c:215:34: warning: 'stm32_iwdg_of_match' defined but not used [-Wunused-const-variable=] As STM32 platforms are always used with DT, drop the of_match_ptr(). Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202308211837.4VBSUAtZ-lkp@intel.com/ Signed-off-by: Rob Herring Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230823151059.2356881-1-robh@kernel.org Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: simatic: Use idiomatic selection of P2SB

2023-08-23T15:31:31+00:00

While it's pretty much theoretical to be otherwise, make sure that P2SB is selected only for X86. This is idiomatic dependency which is used by all others who select it. Use it for Simatic as well. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230822141859.2139630-1-andriy.shevchenko@linux.intel.com Acked-by: Guenter Roeck Signed-off-by: Hans de Goede

watchdog: sama5d4: readout initial state

2023-08-19T15:36:20+00:00

Readout the AT91_WDT_MR bit at probe so that it becomes possible to get the pre-userspace handler working. Signed-off-by: Mathieu Othacehe Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230819084726.11037-1-othacehe@gnu.org Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load

2023-08-19T15:36:19+00:00

When built with CONFIG_INTEL_MID_WATCHDOG=m, currently the driver needs to be loaded manually, for the lack of module alias. This causes unintended resets in cases where watchdog timer is set-up by bootloader and the driver is not explicitly loaded. Add MODULE_ALIAS() to load the driver automatically at boot and avoid this issue. Fixes: 87a1ef8058d9 ("watchdog: add Intel MID watchdog driver support") Signed-off-by: Raag Jadav Reviewed-by: Andy Shevchenko Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230811120220.31578-1-raag.jadav@intel.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: core: stop watchdog when executing poweroff command

2023-08-19T15:36:19+00:00

On some platforms, for example, Intel SoC FPGA platform, the watchdog is started in u-boot, and so kernel will create a timer and work to keep watchdog alive. But when user executes commands "poweroff" or "shutdown -h", the system is reset when watchdog triggers timeout even if WDOG_STOP_ON_REBOOT is set in watchdog driver. The root cause is that the watchdog is not stopped properly because the SYS_POWER_OFF case is not supported in notify callback function. So, add this case to stop watchdog when executing poweroff command. Signed-off-by: Meng Li Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230814090616.1853263-1-Meng.Li@windriver.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: pm8916_wdt: Remove redundant of_match_ptr()

2023-08-19T15:36:18+00:00

The driver depends on CONFIG_OF, it is not necessary to use of_match_ptr() here. Signed-off-by: Ruan Jinjie Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20230811062707.2301583-1-ruanjinjie@huawei.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck