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

[Alexey Klimov <alexey.klimov@linaro.org>]

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@kernel.org>
Signed-off-by: Alexey Klimov <alexey.klimov@linaro.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