[PATCH RFC v2 5/5] arm64: dts: qcom: nord-rrd: Add sound support

[Shawn Guo]

Enable audio on the nord-rrd board. Add a soundcard node using
the qcom,nord-sndcard compatible.

Add PCM1681/ADAU1979 codec nodes on I2C18, with the PCM1681 system
clock supplied via MCLK0.

Describe DAC_ENABLE as the enable of two regulator-fixed supplies
(3.3V and 5V load switches) feeding the PCM1681, and the two MAX9892
click-and-pop suppressors as one simple-audio-amplifier on
CLICK_POP_MUTE_N, routed after VOUT1..4, so DAPM controls the mute.

Signed-off-by: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/nord-rrd.dts | 153 ++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/nord-rrd.dts b/arch/arm64/boot/dts/qcom/nord-rrd.dts
index 47978df0af92..b0abee05a8ba 100644
--- a/arch/arm64/boot/dts/qcom/nord-rrd.dts
+++ b/arch/arm64/boot/dts/qcom/nord-rrd.dts
@@ -7,6 +7,7 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
+#include <dt-bindings/sound/qcom,q6afe.h>
 
 #include "nord-embedded.dtsi"
 #include "pmau0102-nord.dtsi"
@@ -53,6 +54,106 @@ bi_tcxo_ao_div2: bi-tcxo-ao-div2-clk {
 			clock-div = <2>;
 		};
 	};
+
+	/*
+	 * MAX9892 click-and-pop suppressors on the PCM1681 line outputs. Both
+	 * parts are muted by a single CLICK_POP_MUTE_N line, so describe them
+	 * as one amplifier.
+	 */
+	lineout_amp: amplifier {
+		compatible = "simple-audio-amplifier";
+		sound-name-prefix = "LineOut";
+		enable-gpios = <&tlmm 42 GPIO_ACTIVE_HIGH>;
+		VCC-supply = <&vreg_per_3p3>;
+	};
+
+	sound {
+		compatible = "qcom,nord-sndcard";
+		model = "NORD-RRD";
+
+		aux-devs = <&lineout_amp>;
+		audio-routing = "LineOut INL", "VOUT1",
+				"LineOut INR", "VOUT2",
+				"LineOut INL", "VOUT3",
+				"LineOut INR", "VOUT4";
+
+		pinctrl-0 = <&aud_intfc8_mi2s_active>;
+		pinctrl-names = "default";
+
+		aud-intfc8-tdm-playback-dai-link {
+			link-name = "PCM1681 Playback";
+
+			codec {
+				dai-tdm-slot-num = <8>;
+				dai-tdm-slot-width = <32>;
+				dai-tdm-slot-rx-mask = <1 1 1 1>;
+				sound-dai = <&pcm1681>;
+			};
+
+			cpu {
+				dai-tdm-slot-num = <8>;
+				dai-tdm-slot-width = <32>;
+				dai-tdm-slot-tx-mask = <1 1 1 1>;
+				sound-dai = <&q6apmbedai AIF_TDM_RX_8>;
+			};
+
+			platform {
+				sound-dai = <&q6apm>;
+			};
+		};
+
+		aud-intfc8-tdm-capture-dai-link {
+			link-name = "ADAU1979 Capture";
+
+			codec {
+				dai-tdm-slot-num = <8>;
+				dai-tdm-slot-width = <32>;
+				dai-tdm-slot-rx-mask = <1 1 1 1>;
+				sound-dai = <&adau1979>;
+			};
+
+			cpu {
+				dai-tdm-slot-num = <8>;
+				dai-tdm-slot-width = <32>;
+				dai-tdm-slot-rx-mask = <1 1 1 1>;
+				sound-dai = <&q6apmbedai AIF_TDM_TX_8>;
+			};
+
+			platform {
+				sound-dai = <&q6apm>;
+			};
+		};
+	};
+
+	/*
+	 * DAC_ENABLE gates two load switches feeding the PCM1681, one for the
+	 * analog and one for the digital supply.
+	 */
+	vreg_3p3_dac: regulator-3p3-dac {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg_3p3_dac";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&tlmm 41 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	vreg_5p0_dac: regulator-5p0-dac {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg_5p0_dac";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&tlmm 41 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	vreg_per_3p3: regulator-per-3p3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg_per_3p3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
 };
 
 &apps_rsc {
@@ -377,6 +478,58 @@ rtc@32 {
 	};
 };
 
+&i2c18 {
+	clock-frequency = <400000>;
+
+	status = "okay";
+
+	/* ADI ADAU1979 - 4-channel 24-bit ADC */
+	adau1979: adau1979@31 {
+		compatible = "adi,adau1979";
+		reg = <0x31>;
+
+		AVDD-supply = <&vreg_per_3p3>;
+		#sound-dai-cells = <0>;
+	};
+
+	/* PCM1681 DAC */
+	pcm1681: pcm1681@4c {
+		compatible = "ti,pcm1681";
+		reg = <0x4c>;
+
+		pinctrl-0 = <&aud_mclk0_mira_active>;
+		pinctrl-names = "default";
+
+		clocks = <&q6prmcc LPASS_CLK_ID_MCLK_1 LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+		clock-names = "sck";
+		assigned-clocks = <&q6prmcc LPASS_CLK_ID_MCLK_1 LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+		assigned-clock-rates = <12288000>;
+
+		VCC1-supply = <&vreg_5p0_dac>;
+		VCC2-supply = <&vreg_5p0_dac>;
+		VDD-supply = <&vreg_3p3_dac>;
+
+		#sound-dai-cells = <0>;
+	};
+};
+
+&q6apmbedai {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	dai@195 {
+		reg = <AIF_TDM_RX_8>;
+		clocks = <&q6prmcc LPASS_CLK_ID_QAIF_IF8_IBIT LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+		clock-names = "bclk";
+	};
+
+	dai@196 {
+		reg = <AIF_TDM_TX_8>;
+		clocks = <&q6prmcc LPASS_CLK_ID_QAIF_IF8_IBIT LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+		clock-names = "bclk";
+	};
+};
+
 &qupv3_0 {
 	firmware-name = "qcom/nord/qupv3fw.elf";
 
-- 
2.43.0