linux-kernel - Re: [PATCH v2 2/2] arm64: dts: qcom: sc7180: trogdor: SD-card GPIO pin set bias-pull up

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Date:   Mon, 31 May 2021 13:32:23 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Sujit Kautkar <sujitka@...omium.org>
Cc:     Andy Gross <agross@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Doug Anderson <dianders@...omium.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] arm64: dts: qcom: sc7180: trogdor: SD-card GPIO
 pin set bias-pull up

On Fri 21 May 16:58 CDT 2021, Sujit Kautkar wrote:

> Trogdor board does not have external pull-up for cd-gpio. Set this pin

This says "Trogdor" specifically, but the diffstats says "all 7180
devices".

> to internal pull-up for sleep config to avoid frequent regulator toggle
> events.
> 
> This change is aligned with Qualcomm's DT change posted at:
> https://patchwork.kernel.org/patch/11675347/
> 

I'm sorry, but afacit this says that your v2 is Qualcomm's v2 but with
the change I asked for. If this is the case, then your patch is either
v3 or you could just mention this below the '---', as I don't see any
benefit of carrying this in the git history.

Regards,
Bjorn

> Signed-off-by: Sujit Kautkar <sujitka@...omium.org>
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
> ---
> Changes in v2:
> - added pull-up for IDP
> 
> (no changes since v1)
> 
>  arch/arm64/boot/dts/qcom/sc7180-idp.dts      | 2 +-
>  arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-idp.dts b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> index 07133e0af581a..0c255edb7f3c3 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> @@ -696,7 +696,7 @@ pinconf-data {
>  
>  		pinconf-sd-cd {
>  			pins = "gpio69";
> -			bias-disable;
> +			bias-pull-up;
>  			drive-strength = <2>;
>  		};
>  	};
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> index d128a0ed6ad3a..330deb4967ca2 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> @@ -1638,7 +1638,7 @@ pinconf-data {
>  
>  		pinconf-sd-cd {
>  			pins = "gpio69";
> -			bias-disable;
> +			bias-pull-up;
>  			drive-strength = <2>;
>  		};
>  	};
> -- 
> 2.31.1.818.g46aad6cb9e-goog
>