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SubjectRe: [PATCH v2 0/2] Add a watchdog driver that uses ARM Secure Monitor Calls.
Apologies I forgot to add this note to my cover letter.

Xingyu do you mind seeing if you can modify your ATF firmware to match
this driver?
We can add a compatible or make other changes to suit you.

Thanks


On Fri, Apr 3, 2020 at 4:29 PM Evan Benn <evanbenn@chromium.org> wrote:
>
> 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@chromium.org/
> I would like to add the device tree support after the above patch is
> accepted.
>
> Changes in v3:
> - Change name back to arm
> - Add optional get_timeleft op
> - change name to arm_smc_wdt
>
> 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 ARM smc wdt for mt8173 watchdog
>
> Julius Werner (1):
> watchdog: Add new arm_smd_wdt watchdog driver
>
> .../bindings/watchdog/arm-smc-wdt.yaml | 30 +++
> MAINTAINERS | 7 +
> arch/arm64/configs/defconfig | 1 +
> drivers/watchdog/Kconfig | 13 ++
> drivers/watchdog/Makefile | 1 +
> drivers/watchdog/arm_smc_wdt.c | 181 ++++++++++++++++++
> 6 files changed, 233 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
> create mode 100644 drivers/watchdog/arm_smc_wdt.c
>
> --
> 2.26.0.292.g33ef6b2f38-goog
>

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