linux-kernel - Re: [PATCH 1/3] arm64: dts: qcom: acer-aspire1: Enable RTC

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Message-ID: <CAD=FV=UigovpD_s89j6V7MhCXOVHVVXLRtH3XGEHtcHKbwVgBA@mail.gmail.com>
Date:   Mon, 30 Oct 2023 14:55:04 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Nikita Travkin <nikita@...n.ru>,
        cros-qcom-dts-watchers@...omium.org,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] arm64: dts: qcom: acer-aspire1: Enable RTC

Hi,

On Mon, Oct 30, 2023 at 2:47 PM Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>
> On 27.10.2023 16:42, Nikita Travkin wrote:
> > pm6150 has a read-only RTC that can be used to keep the time with some
> > extra userspace tools. Enable it.
> >
> > Signed-off-by: Nikita Travkin <nikita@...n.ru>
> > ---
> Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>
> kinda unsure why it'd ever be disabled
>
> Konrad

FWIW we don't use the PMIC RTC in Chrome boards. I can't quite
remember why, but I _think_ that the power lines aren't hooked up to
the PMIC to keep power on for the board's lowest power states.
Instead we use the RTC that's on the EC (Embedded Controller).

-Doug