linux-kernel - Re: [PATCH v4 4/4] arm64: dts: qcom: sdm845: do not customize SPI0 pin drive/bias

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Date:   Thu, 22 Dec 2022 16:14:47 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Vinod Koul <vkoul@...nel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Joel Selvaraj <joelselvaraj.oss@...il.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Caleb Connolly <caleb@...nolly.tech>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Douglas Anderson <dianders@...omium.org>
Subject: Re: [PATCH v4 4/4] arm64: dts: qcom: sdm845: do not customize SPI0
 pin drive/bias



On 22.12.2022 16:13, Krzysztof Kozlowski wrote:
> Each board should define pin drive/bias for used busses.  All boards
> using SPI0 (db845c and cheza) already do it, so drop the bias/drive
> strength from SoC DTSI.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
> 
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
> 
> Cc: Doug Anderson <dianders@...omium.org>
> 
> Changes since v3:
> 1. Rb tag
> 
> Changes since v2:
> 1. New patch.
> ---
>  arch/arm64/boot/dts/qcom/sdm845.dtsi | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index dcea535de9b7..cac70212cc2a 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -2785,8 +2785,6 @@ qup_i2c15_default: qup-i2c15-default-state {
>  			qup_spi0_default: qup-spi0-default-state {
>  				pins = "gpio0", "gpio1", "gpio2", "gpio3";
>  				function = "qup0";
> -				drive-strength = <6>;
> -				bias-disable;
>  			};
>  
>  			qup_spi1_default: qup-spi1-default-state {