Re: [v2 1/3] arm64: dts: qcom: sc7280: herobrine: Add pinconf settings for mi2s1

From: Stephen Boyd
Date: Fri May 20 2022 - 16:38:08 EST


Quoting Judy Hsiao (2022-05-20 09:10:02)
> 1. Add drive strength property for mi2s1 on sc7280 based platforms.
> 2. Disbale the pull-up mi2s1_data0, mi2s1_sclk.

s/Disbale/Disable/

The commit text is a list of things done but no reason why they're done.
I'd appreciate more freeform text with a blurb why a drive strength is
chosen and why pulls are disabled.

> Signed-off-by: Judy Hsiao <judyhsiao@xxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> index 9cb1bc8ed6b5..6d8744e130b0 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> @@ -612,6 +612,20 @@ &dp_hot_plug_det {
> bias-disable;
> };
>
> +&mi2s1_data0 {
> + drive-strength = <6>;
> + bias-disable;

Is there an external pull on this line?

> +};
> +
> +&mi2s1_sclk {
> + drive-strength = <6>;
> + bias-disable;

Is there an external pull on this line? If so please add that details as
a comment like we do for other external pulls.

> +};