linux-kernel - Re: [PATCH v1 2/2] arm64: dts: qcom: qcs9075-evk: Add sound card

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Message-ID: <cfd4f557-7f97-4da9-8eff-fe3749e336db@oss.qualcomm.com>
Date: Sun, 25 May 2025 20:13:06 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_pkumpatl@...cinc.com,
        kernel@....qualcomm.com
Subject: Re: [PATCH v1 2/2] arm64: dts: qcom: qcs9075-evk: Add sound card

On 25/05/2025 18:53, Mohammad Rafi Shaik wrote:
> Add the sound card node with tested playback over max98357a
> i2s speakers and i2s mic.

I2S

speaker amplifier

> 
> Introduce HS (High-Speed) MI2S pin control support.
> The I2S max98357a speaker is connected via HS0 and I2S

speaker amplifier

> microphones utilize the HS2 interface.
> 
> Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>
> ---
>   .../boot/dts/qcom/qcs9075-iq-9075-evk.dts     | 52 +++++++++++++++++++
>   arch/arm64/boot/dts/qcom/sa8775p.dtsi         | 14 +++++
>   2 files changed, 66 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts b/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
> index 0e44e0e6dbd4..1ebf42b0b10e 100644
> --- a/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
> @@ -6,6 +6,7 @@
>   
>   #include <dt-bindings/gpio/gpio.h>
>   #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> +#include <dt-bindings/sound/qcom,q6afe.h>
>   
>   #include "qcs9075-som.dtsi"
>   
> @@ -20,6 +21,57 @@ aliases {
>   	chosen {
>   		stdout-path = "serial0:115200n8";
>   	};
> +
> +	max98357a: audio-codec-0 {
> +		compatible = "maxim,max98357a";
> +		#sound-dai-cells = <0>;
> +	};
> +
> +	dmic_codec: dmic-codec {

Just dmic or audio-codec-1

> +		compatible = "dmic-codec";
> +		#sound-dai-cells = <0>;
> +		num-channels = <1>;
> +	};
> +
> +	sound {
> +		compatible = "qcom,qcs9075-sndcard";
> +		model = "qcs9075-rb8-snd-card";

Were the bindings and the driver sent? Cover letter doesn't mention 
them. It is better to send them as a single patch series (this is the 
case for all subsys except net-next and trees maintained by Greg, e.g. USB).

> +
> +		pinctrl-0 = <&hs0_mi2s_active>, <&hs2_mi2s_active>;
> +		pinctrl-names = "default";
> +
> +		hs0-mi2s-playback-dai-link {
> +			link-name = "HS0 mi2s playback";
> +
> +			codec {
> +				sound-dai = <&max98357a>;
> +			};
> +
> +			cpu {
> +				sound-dai = <&q6apmbedai PRIMARY_MI2S_RX>;
> +			};
> +
> +			platform {
> +				sound-dai = <&q6apm>;
> +			};
> +		};
> +
> +		hs2-mi2s-capture-dai-link {
> +			link-name = "HS2 mi2s capture";
> +
> +			codec {
> +				sound-dai = <&dmic_codec>;
> +			};
> +
> +			cpu {
> +				sound-dai = <&q6apmbedai TERTIARY_MI2S_TX>;
> +			};
> +
> +			platform {
> +				sound-dai = <&q6apm>;
> +			};
> +		};
> +	};
>   };

-- 
With best wishes
Dmitry