This is currently supported in firmware deployed on oak, hana and elm mt8173
chromebook devices. The kernel driver is written to be a generic SMC
watchdog driver.
Arm Trusted Firmware upstreaming review:
https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/3405
Patch to add oak, hana, elm device tree:
https://lore.kernel.org/linux-arm-kernel/20200110073730.213789-1-hsinyi@xxxxxxxxxxxx/
I would like to add the device tree support after the above patch is
accepted.
Changes in v2:
- Change name arm > mt8173
- use watchdog_stop_on_reboot
- use watchdog_stop_on_unregister
- use devm_watchdog_register_device
- remove smcwd_shutdown, smcwd_remove
- change error codes
Evan Benn (1):
dt-bindings: watchdog: Add mt8173,smc-wdt watchdog
Julius Werner (1):
watchdog: Add new mt8173_smc_wdt watchdog driver
.../bindings/watchdog/mt8173,smc-wdt.yaml | 30 ++++
MAINTAINERS | 7 +
arch/arm64/configs/defconfig | 1 +
drivers/watchdog/Kconfig | 13 ++
drivers/watchdog/Makefile | 1 +
drivers/watchdog/mt8173_smc_wdt.c | 160 ++++++++++++++++++
6 files changed, 212 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/mt8173,smc-wdt.yaml
create mode 100644 drivers/watchdog/mt8173_smc_wdt.c
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2.25.0.265.gbab2e86ba0-goog
