linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7280: Add ldo

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Date:   Thu, 21 Apr 2022 09:20:06 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        quic_rohkumar@...cinc.com,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Judy Hsiao <judyhsiao@...omium.org>,
        Rajendra Nayak <quic_rjendra@...cinc.com>,
        Venkata Prasad Potturu <quic_potturu@...cinc.com>
Subject: Re: [PATCH] arm64: dts: qcom: sc7280: Add ldo_l17b regulator node

Hi,

On Thu, Apr 21, 2022 at 7:20 AM Srinivasa Rao Mandadapu
<quic_srivasam@...cinc.com> wrote:
>
> Add ldo_l17b in pm7325 regulator, which is required for
> wcd codec vdd buck supply.
>
> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
> Co-developed-by: Venkata Prasad Potturu <quic_potturu@...cinc.com>
> Signed-off-by: Venkata Prasad Potturu <quic_potturu@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi | 5 +++++
>  1 file changed, 5 insertions(+)

The ${SUBJECT} should probably mention qcard somehow? Right now your
patch subject makes it sound like this applies to all sc7280 boards,
but this only affects those including the qcard dtsi file.


> diff --git a/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi b/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi
> index b833ba1..17d0c05 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi
> @@ -113,6 +113,11 @@
>                         regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
>                 };
>
> +               vreg_l17b_1p8: ldo17 {
> +                       regulator-min-microvolt = <1700000>;
> +                       regulator-max-microvolt = <1900000>;

All the other regulators in this file specify:

regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;

Why doesn't yours?