[PATCH v6 4/4] arm64: dts: renesas: r9a09g047e57-smarc: add DA7212 audio codec support

[John Madieu <john.madieu.xa@bp.renesas.com>]

RZ/G3E SMARC board has a DA7212 audio codec connected via I2C1 for
sound input/output using SSI3/SSI4 where:

 - The codec receives its master clock from the Versa3 clock
   generator present on the SoM
 - SSI4 shares clock pins with SSI3 to provide a separate data
   line for full-duplex audio capture.

Enable audio support on RZ/G3E SMARC2 EVK boards with a DA7212 audio codec.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
---

Changes:

v6: No changes.
v5:
 - Drop the unnecessary #address-cells / #size-cells from the
   codec@1a node; the port child has no unit address or reg, and the
   da7212 binding sets unevaluatedProperties: false.

 .../boot/dts/renesas/r9a09g047e57-smarc.dts   | 112 ++++++++++++++++++
 1 file changed, 112 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
index 6372f582a7c4..ac525b73c1bb 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
@@ -32,6 +32,37 @@
 #include "rzg3e-smarc-som.dtsi"
 #include "renesas-smarc2.dtsi"
 
+/*
+ * SSI-DA7212
+ *
+ * These commands are required when Playback/Capture
+ *
+ *	amixer -q cset name='Aux Switch' on
+ *	amixer -q cset name='Mixin Left Aux Left Switch' on
+ *	amixer -q cset name='Mixin Right Aux Right Switch' on
+ *	amixer -q cset name='ADC Switch' on
+ *	amixer -q cset name='Mixout Right Mixin Right Switch' off
+ *	amixer -q cset name='Mixout Left Mixin Left Switch' off
+ *	amixer -q cset name='Headphone Volume' 70%
+ *	amixer -q cset name='Headphone Switch' on
+ *	amixer -q cset name='Mixout Left DAC Left Switch' on
+ *	amixer -q cset name='Mixout Right DAC Right Switch' on
+ *	amixer -q cset name='DAC Left Source MUX' 'DAI Input Left'
+ *	amixer -q cset name='DAC Right Source MUX' 'DAI Input Right'
+ *	amixer -q sset 'Mic 1 Amp Source MUX' 'MIC_P'
+ *	amixer -q sset 'Mic 2 Amp Source MUX' 'MIC_P'
+ *	amixer -q sset 'Mixin Left Mic 1' on
+ *	amixer -q sset 'Mixin Right Mic 2' on
+ *	amixer -q sset 'Mic 1' 90% on
+ *	amixer -q sset 'Mic 2' 90% on
+ *	amixer -q sset 'Lineout' 80% on
+ *	amixer -q set "Headphone" 100% on
+ *
+ * When Capture chained with DVC, use this command to amplify sound
+ *	amixer set 'DVC In',0 80%
+ * For playback, use: amixer set 'DVC Out',0 80%
+ */
+
 / {
 	model = "Renesas SMARC EVK version 2 based on r9a09g047e57";
 	compatible = "renesas,smarc2-evk", "renesas,rzg3e-smarcm",
@@ -55,6 +86,22 @@ vqmmc_sd1_pvdd: regulator-vqmmc-sd1-pvdd {
 		gpios-states = <0>;
 		states = <3300000 0>, <1800000 1>;
 	};
+
+	sound_card: sound {
+		compatible = "audio-graph-card";
+
+		label = "snd-rzg3e";
+
+		dais = <&rsnd_port0>;	/* DA7212 */
+	};
+};
+
+&audio_clkb {
+	clock-frequency = <11289600>;
+};
+
+&audio_clkc {
+	clock-frequency = <12288000>;
 };
 
 &canfd {
@@ -99,6 +146,35 @@ &i2c0 {
 	pinctrl-names = "default";
 };
 
+&i2c1 {
+	da7212: codec@1a {
+		compatible = "dlg,da7212";
+		#sound-dai-cells = <0>;
+		reg = <0x1a>;
+
+		clocks = <&versa3 1>;
+		clock-names = "mclk";
+
+		dlg,micbias1-lvl = <2500>;
+		dlg,micbias2-lvl = <2500>;
+		dlg,dmic-data-sel = "lrise_rfall";
+		dlg,dmic-samplephase = "between_clkedge";
+		dlg,dmic-clkrate = <3000000>;
+
+		VDDA-supply = <&reg_1p8v>;
+		VDDSP-supply = <&reg_3p3v>;
+		VDDMIC-supply = <&reg_3p3v>;
+		VDDIO-supply = <&reg_1p8v>;
+
+		port {
+			da7212_endpoint: endpoint {
+				remote-endpoint = <&rsnd_endpoint0>;
+				mclk-fs = <256>;
+			};
+		};
+	};
+};
+
 &keys {
 	pinctrl-0 = <&nmi_pins>;
 	pinctrl-names = "default";
@@ -280,6 +356,42 @@ &sdhi1 {
 	vqmmc-supply = <&vqmmc_sd1_pvdd>;
 };
 
+&snd_rzg3e {
+	pinctrl-0 = <&sound_clk_pins &sound_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+
+	/* audio_clkout */
+	#clock-cells = <0>;
+	clock-frequency = <11289600>;
+
+	/* Multi DAI */
+	#sound-dai-cells = <1>;
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		rsnd_port0: port@0 {
+			reg = <0>;
+			rsnd_endpoint0: endpoint {
+				remote-endpoint = <&da7212_endpoint>;
+
+				dai-format = "i2s";
+				bitclock-master = <&rsnd_endpoint0>;
+				frame-master = <&rsnd_endpoint0>;
+
+				playback = <&ssi3>, <&src1>, <&dvc1>;
+				capture = <&ssi4>, <&src0>, <&dvc0>;
+			};
+		};
+	};
+};
+
+&ssi4 {
+	shared-pin;
+};
+
 &usb3_phy {
 	status = "okay";
 };
-- 
2.25.1