linux-kernel - [PATCH v3 12/12] arm64: dts: qcom: qrb4210-rb2: add VA capture support

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Message-Id: <20250522-rb2_audio_v3-v3-12-9eeb08cab9dc@linaro.org>
Date: Thu, 22 May 2025 18:41:02 +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 12/12] arm64: dts: qcom: qrb4210-rb2: add VA capture
 support

Add support for audio capture using onboard DMIC. It is directly
connected to vamacro and txmacro without any soundwire interfaces.

The capture was verified using the following commands:

amixer -c0 cset iface=MIXER,name='MultiMedia3 Mixer VA_CODEC_DMA_TX_0' 1
amixer -c0 cset iface=MIXER,name='VA_AIF1_CAP Mixer DEC0' 1
amixer -c0 cset iface=MIXER,name='VA_DEC0 Volume' 110
amixer -c0 cset iface=MIXER,name='VA DMIC MUX0' 2

arecord -D hw:0,2 -f S16_LE -c 2 -r 48000 -d 5 record.wav

Cc: Srinivas Kandagatla <srini@...nel.org>
Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
---
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
index 1e2b9d2516b62e2e80c40ed6c3a0c4548a02630c..1c125ae4e2f3eb4f715bd0aac42a60b9132ecfbc 100644
--- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
+++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
@@ -169,6 +169,22 @@ platform {
 				sound-dai = <&q6routing>;
 			};
 		};
+
+		va-dai-link {
+			link-name = "VA Capture";
+
+			codec {
+				sound-dai = <&vamacro 0>;
+			};
+
+			cpu {
+				sound-dai = <&q6afedai VA_CODEC_DMA_TX_0>;
+			};
+
+			platform {
+				sound-dai = <&q6routing>;
+			};
+		};
 	};
 
 	wcd937x: codec {
@@ -833,6 +849,12 @@ &usb_qmpphy_out {
 	remote-endpoint = <&pmi632_ss_in>;
 };
 
+&vamacro {
+	pinctrl-0 = <&lpass_dmic01_active>;
+	pinctrl-names = "default";
+	qcom,dmic-sample-rate = <2400000>;
+};
+
 &wifi {
 	vdd-0.8-cx-mx-supply = <&vreg_l8a_0p664>;
 	vdd-1.8-xo-supply = <&vreg_l16a_1p3>;

-- 
2.47.2