[PATCH 0/4] reboot SiFive Unmatched via PMIC

[Jessica Clarke]

On 24 Sep 2021, at 12:33, Nikita Shubin <nikita.shubin at maquefel.me> wrote:
> 
> From: Nikita Shubin <n.shubin at yadro.com>
> 
> This series introduce rebooting via i2c PMIC, currently on
> SiFive Unmatched board.
> 
> teseted via Linux with reset extension and direct ecall from 
> u-boot.
> 
> With this it becomes possible to reboot/shutdown the board 
> if Linux or u-boot is accompanied with OpenSBI reset extension.
> 
> "gpio-poweroff" is required to be removed from u-boot dts file, as
> it overrides fdt_reset_da9063.

I disagree with this. The GPIO has been provided by SiFive specifically
for powering off and so should be used. The DA9063 is only used for
reset because there is no reset GPIO, but it’s a bit of a hacky way of
resetting. IMO the DA9063 driver should be the lowest priority and only
used for poweroff or reset when there is no alternative.

Jess