linux-kernel - Re: [PATCH 2/3] arm64: dts: qcom: acer-aspire1: Correct audio codec definition

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Date:   Mon, 30 Oct 2023 22:48:00 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Nikita Travkin <nikita@...n.ru>,
        cros-qcom-dts-watchers@...omium.org,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: qcom: acer-aspire1: Correct audio codec
 definition

On 27.10.2023 16:42, Nikita Travkin wrote:
> When initially added, a mistake was made in the definition of the codec.
> 
> Despite the fact that the DMIC line is connected on the side of the
> codec chip, and relevant passive components, including 0-ohm resistors
> connecting the dmics, are present, the dmic line is still cut in
> another place on the board, which was overlooked.
> 
> Correct this by replacing the dmic configuration with a comment
> describing this hardware detail.
> 
> While at it, also add missing regulators definitions. This is not a
> functional change as all the relevant regulators were already added via
> the other rail supplies.
> 
> Fixes: 4a9f8f8f2ada ("arm64: dts: qcom: Add Acer Aspire 1")
> Signed-off-by: Nikita Travkin <nikita@...n.ru>
> ---
>  arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts | 17 +++++++++++++++--
>  1 file changed, 15 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts b/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts
> index cfde8cd47107..00b442696618 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7180-acer-aspire1.dts
> @@ -209,9 +209,22 @@ alc5682: codec@1a {
>  		AVDD-supply = <&vreg_l15a_1p8>;
>  		MICVDD-supply = <&reg_codec_3p3>;
>  		VBAT-supply = <&reg_codec_3p3>;
> +		DBVDD-supply = <&vreg_l15a_1p8>;
> +		LDO1-IN-supply = <&vreg_l15a_1p8>;
> +
> +		/*
> +		 * NOTE: The board has a path from this codec to the
> +		 * DMIC microphones in the lid, however some of the option
> +		 * resistors are absent and the microphones are connected
> +		 * to the SoC instead.
Would that not also require more DT changes and maybe UCM?

Konrad