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Date:   Thu, 21 Apr 2022 10:56:54 -0700
From:   Matthias Kaehlcke <mka@chromium.org>
To:     Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Cc:     agross@kernel.org, bjorn.andersson@linaro.org, robh+dt@kernel.org,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, quic_rohkumar@quicinc.com,
        srinivas.kandagatla@linaro.org, dianders@chromium.org,
        swboyd@chromium.org, judyhsiao@chromium.org,
        Venkata Prasad Potturu <quic_potturu@quicinc.com>
Subject: Re: [PATCH v9 11/12] arm64: dts: qcom: sc7280: Add sound node for
 CRD 1.0 and CRD 2.0
Message-ID: <YmGa5iQ1ozTs5jLJ@google.com>
References: <1650552459-21077-1-git-send-email-quic_srivasam@quicinc.com>
 <1650552459-21077-12-git-send-email-quic_srivasam@quicinc.com>
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On Thu, Apr 21, 2022 at 08:17:38PM +0530, Srinivasa Rao Mandadapu wrote:

> Subject: arm64: dts: qcom: sc7280: Add sound node for CRD 1.0 and CRD 2.0 

nit: and the IDP boards?

> Add dt nodes for sound card support on revision 3 and 4
> (aka CRD 1.0 and 2.0) boards, which is using WCD938x headset
> playback, capture, I2S speaker playback and DMICs via VA macro.
> 
> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
> Co-developed-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
> Signed-off-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7280-crd-r3.dts | 23 +++++++
>  arch/arm64/boot/dts/qcom/sc7280-idp.dtsi   | 98 ++++++++++++++++++++++++++++++
>  2 files changed, 121 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-crd-r3.dts b/arch/arm64/boot/dts/qcom/sc7280-crd-r3.dts
> index 462d655..763d2bf 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-crd-r3.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7280-crd-r3.dts
> @@ -87,6 +87,29 @@ ap_ts_pen_1v8: &i2c13 {
>  	pins = "gpio51";
>  };
>  
> +&sound {
> +	audio-routing =
> +		"IN1_HPHL", "HPHL_OUT",
> +		"IN2_HPHR", "HPHR_OUT",
> +		"AMIC1", "MIC BIAS1",
> +		"AMIC2", "MIC BIAS2",
> +		"VA DMIC0", "MIC BIAS1",
> +		"VA DMIC1", "MIC BIAS1",
> +		"VA DMIC2", "MIC BIAS3",
> +		"VA DMIC3", "MIC BIAS3",
> +		"TX SWR_ADC0", "ADC1_OUTPUT",
> +		"TX SWR_ADC1", "ADC2_OUTPUT",
> +		"TX SWR_ADC2", "ADC3_OUTPUT",
> +		"TX SWR_DMIC0", "DMIC1_OUTPUT",
> +		"TX SWR_DMIC1", "DMIC2_OUTPUT",
> +		"TX SWR_DMIC2", "DMIC3_OUTPUT",
> +		"TX SWR_DMIC3", "DMIC4_OUTPUT",
> +		"TX SWR_DMIC4", "DMIC5_OUTPUT",
> +		"TX SWR_DMIC5", "DMIC6_OUTPUT",
> +		"TX SWR_DMIC6", "DMIC7_OUTPUT",
> +		"TX SWR_DMIC7", "DMIC8_OUTPUT";
> +};
> +
>  &wcd938x {
>  	pinctrl-names = "default", "sleep", "us_euro_hs_sel";
>  	pinctrl-0 = <&wcd_reset_n>;
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
> index 2e991e8..f2ad0c6 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
> @@ -85,6 +85,104 @@
>  		pinctrl-names = "default";
>  		pinctrl-0 = <&nvme_pwren>;
>  	};
> +
> +	sound: sound {
> +		compatible = "google,sc7280-herobrine";
> +		model = "sc7280-wcd938x-max98360a-1mic";
> +
> +		audio-routing =
> +			"IN1_HPHL", "HPHL_OUT",
> +			"IN2_HPHR", "HPHR_OUT",
> +			"AMIC1", "MIC BIAS1",
> +			"AMIC2", "MIC BIAS2",
> +			"VA DMIC0", "MIC BIAS3",
> +			"VA DMIC1", "MIC BIAS3",
> +			"VA DMIC2", "MIC BIAS1",
> +			"VA DMIC3", "MIC BIAS1",
> +			"TX SWR_ADC0", "ADC1_OUTPUT",
> +			"TX SWR_ADC1", "ADC2_OUTPUT",
> +			"TX SWR_ADC2", "ADC3_OUTPUT",
> +			"TX SWR_DMIC0", "DMIC1_OUTPUT",
> +			"TX SWR_DMIC1", "DMIC2_OUTPUT",
> +			"TX SWR_DMIC2", "DMIC3_OUTPUT",
> +			"TX SWR_DMIC3", "DMIC4_OUTPUT",
> +			"TX SWR_DMIC4", "DMIC5_OUTPUT",
> +			"TX SWR_DMIC5", "DMIC6_OUTPUT",
> +			"TX SWR_DMIC6", "DMIC7_OUTPUT",
> +			"TX SWR_DMIC7", "DMIC8_OUTPUT";
> +
> +		qcom,msm-mbhc-hphl-swh = <1>;
> +		qcom,msm-mbhc-gnd-swh = <1>;
> +
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		#sound-dai-cells = <0>;
> +
> +		dai-link@0 {
> +			link-name = "MAX98360A";
> +			reg = <MI2S_SECONDARY>;

This usually is the same as the node address. Given that it's a bogus value that
isn't used the link number seems a better choice than the lpass DAI id.

Note for other reviewers: the current state of discussion is to remove this
property from the binding and device trees in a follow up series.

> +
> +			cpu {
> +				sound-dai = <&lpass_cpu MI2S_SECONDARY>;
> +			};
> +
> +			codec {
> +				sound-dai = <&max98360a>;
> +			};
> +		};
> +
> +		dai-link@1 {
> +			link-name = "DisplayPort";
> +			reg = <LPASS_DP_RX>;
> +
> +			cpu {
> +				sound-dai = <&lpass_cpu LPASS_DP_RX>;
> +			};
> +
> +			codec {
> +				sound-dai = <&mdss_dp>;
> +			};
> +		};
> +
> +		dai-link@2 {
> +			link-name = "WCD9385 Playback";
> +			reg = <LPASS_CDC_DMA_RX0>;
> +
> +			cpu {
> +				sound-dai = <&lpass_cpu LPASS_CDC_DMA_RX0>;
> +			};
> +
> +			codec {
> +				sound-dai = <&wcd938x 0>, <&swr0 0>, <&lpass_rx_macro 0>;
> +			};
> +		};
> +
> +		dai-link@3 {
> +			link-name = "WCD9385 Capture";
> +			reg = <LPASS_CDC_DMA_TX3>;
> +
> +			cpu {
> +				sound-dai = <&lpass_cpu LPASS_CDC_DMA_TX3>;
> +			};
> +
> +			codec {
> +				sound-dai = <&wcd938x 1>, <&swr1 0>, <&lpass_tx_macro 0>;
> +			};
> +		};
> +
> +		dai-link@4 {
> +			link-name = "DMIC";
> +			reg = <LPASS_CDC_DMA_VA_TX0>;
> +
> +			cpu {
> +				sound-dai = <&lpass_cpu LPASS_CDC_DMA_VA_TX0>;
> +			};
> +
> +			codec {
> +				sound-dai = <&lpass_va_macro 0>;
> +			};
> +		};
> +	};
>  };
>  
>  &apps_rsc {
> -- 
> 2.7.4
>