Re: [PATCH] arm64: dts: qcom: pmk8350: Make RTC disabled by default; enable on sc7280-idp

[Matthias Kaehlcke]

On Wed, Sep 29, 2021 at 03:38:14PM -0700, Douglas Anderson wrote:
> The RTC on the pmk8350 is not useful on all boards. Some boards may
> not provide backup power to the PMIC but might have another RTC on the
> board that does have backup power. In this case it's better to not use
> the RTC on the PMIC.
> 
> At the moment, the only boards that includes this PMIC are sc7280-idp
> and sc7280-idp2. On sc7280-idp I'm not aware of any other RTCs, but
> sc7280-idp2 has a Chrome OS EC on it and this is intended to provide
> the RTC for the AP.
> 
> Let's do what we normally do for hardware that's not used by all
> boards and set it to a default status of "disabled" and then enable it
> on the boards that need it.
> 
> NOTE: for sc7280-idp it's _possible_ we might also want to add
> `allow-set-time;`. That could be the subject of a future patch if it
> is indeed true.
> 
> Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>

Reviewed-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>