[PATCH v2] arm64: dts: rockchip: Enable RK809 audio codec for Radxa ROCK 4C+

[Jonathan Liu]

This adds the necessary device tree changes to enable analog audio
output for the 3.5 mm TRS headphone jack on the Radxa ROCK 4C+ with
its RK809 audio codec.

Signed-off-by: Jonathan Liu <net147 at gmail.com>
---
 .../boot/dts/rockchip/rk3399-rock-4c-plus.dts | 46 ++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts
index d4b4dced3e39..14453b286446 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts
@@ -52,6 +52,21 @@ led-1 {
 		};
 	};
 
+	rk809-sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,name = "Analog RK809";
+		simple-audio-card,mclk-fs = <256>;
+
+		simple-audio-card,cpu {
+			sound-dai = <&i2s0>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&rk809>;
+		};
+	};
+
 	sdio_pwrseq: sdio-pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		clocks = <&rk809 1>;
@@ -200,10 +215,13 @@ rk809: pmic at 20 {
 		interrupt-parent = <&gpio1>;
 		interrupts = <RK_PC5 IRQ_TYPE_LEVEL_LOW>;
 		#clock-cells = <1>;
+		clock-names = "mclk";
+		clocks = <&cru SCLK_I2S_8CH_OUT>;
 		clock-output-names = "rk808-clkout1", "rk808-clkout2";
 		pinctrl-names = "default";
-		pinctrl-0 = <&pmic_int_l>;
+		pinctrl-0 = <&pmic_int_l>, <&i2s_8ch_mclk>;
 		rockchip,system-power-controller;
+		#sound-dai-cells = <0>;
 		wakeup-source;
 
 		vcc1-supply = <&vcc5v0_sys>;
@@ -445,6 +463,10 @@ &i2c3 {
 	status = "okay";
 };
 
+&i2s0 {
+	status = "okay";
+};
+
 &i2s2 {
 	status = "okay";
 };
@@ -472,6 +494,28 @@ bt_wake_l: bt-wake-l {
 		};
 	};
 
+	i2s0 {
+		i2s0_8ch_bus: i2s0-8ch-bus {
+			rockchip,pins =
+				<3 RK_PD0 1 &pcfg_pull_none>,
+				<3 RK_PD2 1 &pcfg_pull_none>,
+				<3 RK_PD3 1 &pcfg_pull_none>,
+				<3 RK_PD7 1 &pcfg_pull_none>;
+		};
+
+		i2s0_8ch_bus_bclk_off: i2s0-8ch-bus-bclk-off {
+			rockchip,pins =
+				<3 RK_PD0 RK_FUNC_GPIO &pcfg_pull_none>,
+				<3 RK_PD2 1 &pcfg_pull_none>,
+				<3 RK_PD3 1 &pcfg_pull_none>,
+				<3 RK_PD7 1 &pcfg_pull_none>;
+		};
+
+		i2s_8ch_mclk: i2s-8ch-mclk {
+			rockchip,pins = <4 RK_PA0 1 &pcfg_pull_none>;
+		};
+	};
+
 	leds {
 		user_led1: user-led1 {
 			rockchip,pins = <3 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
-- 
2.46.0