linux-kernel - [PATCH v3 09/12] arm64: dts: qcom: qrb4210-rb2: add wcd937x codec support

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Message-Id: <20250522-rb2_audio_v3-v3-9-9eeb08cab9dc@linaro.org>
Date: Thu, 22 May 2025 18:40:59 +0100
From: Alexey Klimov <alexey.klimov@...aro.org>
To: Srinivas Kandagatla <srini@...nel.org>, Mark Brown <broonie@...nel.org>, 
 linux-sound@...r.kernel.org
Cc: Liam Girdwood <lgirdwood@...il.com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Dmitry Baryshkov <lumag@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org
Subject: [PATCH v3 09/12] arm64: dts: qcom: qrb4210-rb2: add wcd937x codec
 support

wcd937x codec contains soundwire RX and TX slave devices
and can convert digital audio to analog audio and vice versa.
The codec node also requires description of reset pin/gpio.

Cc: Srinivas Kandagatla <srini@...nel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
---
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 47 ++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
index a37860175d2733214f1b257e84d5cb4821033242..6bce63720cfffd8e0e619937fb1f365cbbbcb283 100644
--- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
+++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
@@ -5,6 +5,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/leds/common.h>
 #include <dt-bindings/sound/qcom,q6afe.h>
 #include <dt-bindings/sound/qcom,q6asm.h>
@@ -152,6 +153,25 @@ codec {
 		};
 	};
 
+	wcd937x: codec {
+		compatible = "qcom,wcd9370-codec";
+		pinctrl-0 = <&wcd_reset_n>;
+		pinctrl-names = "default";
+		reset-gpios = <&tlmm 82 GPIO_ACTIVE_LOW>;
+		vdd-buck-supply = <&vreg_l9a_1p8>;
+		vdd-rxtx-supply = <&vreg_l9a_1p8>;
+		vdd-px-supply = <&vreg_l9a_1p8>;
+		vdd-mic-bias-supply = <&vdc_vbat_som>;
+		qcom,micbias1-microvolt = <1800000>;
+		qcom,micbias2-microvolt = <1800000>;
+		qcom,micbias3-microvolt = <1800000>;
+		qcom,micbias4-microvolt = <1800000>;
+		qcom,mbhc-buttons-vthreshold-microvolt = <75000 150000 237000 500000 500000 500000 500000 500000>;
+		qcom,rx-device = <&wcd937x_rx>;
+		qcom,tx-device = <&wcd937x_tx>;
+		#sound-dai-cells = <1>;
+	};
+
 	vreg_hdmi_out_1p2: regulator-hdmi-out-1p2 {
 		compatible = "regulator-fixed";
 		regulator-name = "VREG_HDMI_OUT_1P2";
@@ -605,6 +625,26 @@ &sleep_clk {
 	clock-frequency = <32764>;
 };
 
+&swr1 {
+	status = "okay";
+
+	wcd937x_rx: codec@0,4 {
+		compatible = "sdw20217010a00";
+		reg = <0 4>;
+		qcom,rx-port-mapping = <1 2 3 4 5>;
+	};
+};
+
+&swr0 {
+	status = "okay";
+
+	wcd937x_tx: codec@0,3 {
+		compatible = "sdw20217010a00";
+		reg = <0 3>;
+		qcom,tx-port-mapping = <1 1 2 3>;
+	};
+};
+
 &tlmm {
 	gpio-reserved-ranges = <43 2>, <49 1>, <54 1>,
 			       <56 3>, <61 2>, <64 1>,
@@ -689,6 +729,13 @@ sdc2_card_det_n: sd-card-det-n-state {
 		drive-strength = <2>;
 		bias-pull-up;
 	};
+
+	wcd_reset_n: wcd-reset-n-state {
+		pins = "gpio82";
+		function = "gpio";
+		drive-strength = <16>;
+		output-high;
+	};
 };
 
 &uart3 {

-- 
2.47.2