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

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Date:   Sat, 23 Apr 2022 10:58:24 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
Cc:     agross@...nel.org, robh+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_rohkumar@...cinc.com,
        srinivas.kandagatla@...aro.org, dianders@...omium.org,
        swboyd@...omium.org, judyhsiao@...omium.org,
        quic_rjendra@...cinc.com,
        Venkata Prasad Potturu <quic_potturu@...cinc.com>
Subject: Re: [PATCH] arm64: dts: qcom: sc7280: Add ldo_l17b regulator node

On Thu 21 Apr 09:19 CDT 2022, Srinivasa Rao Mandadapu 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(+)
> 
> 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>;

Can you confirm that this doesn't need to be in HPM mode?

Thanks,
Bjorn

> +		};
> +
>  		vdd_px_wcd9385:
>  		vdd_txrx:
>  		vddpx_0:
> -- 
> 2.7.4
>