linux-kernel - Re: [PATCH 1/2] ARM: dts: qcom: Add LPG node to pm8941

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Date:   Thu, 05 May 2022 10:01:37 +0200
From:   Luca Weiss <luca@...tu.xyz>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...ainline.org>
Subject: Re: [PATCH 1/2] ARM: dts: qcom: Add LPG node to pm8941

Hi Bjorn,

On Mittwoch, 4. Mai 2022 22:54:10 CEST Bjorn Andersson wrote:
> The PM8941 contains 8 LPG channels, as well as TRILED and LUT blocks.
> Add a node for these.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
>  arch/arm/boot/dts/qcom-pm8941.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-pm8941.dtsi
> b/arch/arm/boot/dts/qcom-pm8941.dtsi index cdd2bdb77b32..7881a071b372
> 100644
> --- a/arch/arm/boot/dts/qcom-pm8941.dtsi
> +++ b/arch/arm/boot/dts/qcom-pm8941.dtsi
> @@ -144,6 +144,15 @@ pm8941_1: pm8941@1 {
>  		#address-cells = <1>;
>  		#size-cells = <0>;
> 
> +		pm8941_lpg: lpg {
> +			compatible = "qcom,pm8941-lpg";
> +
> +			#address-cells = <1>;
> +			#size-cells = <0>;

Just curious, why doesn't pm8941 have #pwm-cells = <2>; like the other lpg 
nodes in [0]?
Other than that, the node works fine on pm8941. Will send a patch for enabling 
notification LED on msm8974-FP2 soon.

Regards
Luca

[0] https://lore.kernel.org/linux-arm-msm/20220505022706.1692554-2-bjorn.andersson@linaro.org/


> +
> +			status = "disabled";
> +		};
> +
>  		pm8941_wled: wled@...0 {
>  			compatible = "qcom,pm8941-wled";
>  			reg = <0xd800>;