From: Ondrej Jirman <megous@megous.com>
Date: Wed, 24 Nov 2021 01:58:45 +0100
Subject: [PATCH 18/18] arm64: dts: rk3399-pinephone-pro: Add audio support

The codec is complicated, good luck! :D

Signed-off-by: Ondrej Jirman <megous@megous.com>
---
 .../boot/dts/rockchip/rk3399-pinephone-pro.dts     | 96 ++++++++++++++++++++++
 1 file changed, 96 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
index 65cb701..4afed92 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
@@ -168,6 +168,69 @@ power {
 		};
 	};
 
+	// in1  - digital mic daughhterboard
+	// in2  - headset mic
+	// in3  - modem output  (muxed with mono)
+	// spol - earphone
+	// hpo  - heaphones
+	// lout - modem input
+	// spaker - amp enabled by SPK_CTL_H
+	//
+	// mclk - GPIO4_A0/I2S_CLK
+	//
+	// some gpio-jack-detection driver?
+	//pinctrl-0 = <&hp_det>; // GPIO4_D4
+
+	rt5640-sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "rockchip,rt5640-codec";
+		simple-audio-card,aux-devs = <&speaker_amp>;
+		simple-audio-card,format = "i2s";
+		simple-audio-card,mclk-fs = <256>;
+
+		simple-audio-card,widgets =
+			"Microphone", "Headset Microphone",
+			"Microphone", "Internal Microphone",
+			"Headphone", "Headphone Jack",
+			"Speaker", "Internal Earpiece",
+			"Speaker", "Internal Speaker",
+			"Line", "Line In Modem",
+			"Line", "Line Out Modem";
+
+		simple-audio-card,routing =
+			"Headphone Jack", "HPOL",
+			"Headphone Jack", "HPOR",
+			"Internal Earpiece", "SPOLP",
+			"Internal Earpiece", "SPOLN",
+			"Internal Speaker", "Speaker Amp OUTL",
+			"Internal Speaker", "Speaker Amp OUTR",
+			"Speaker Amp INL", "HPOL",
+			"Speaker Amp INR", "HPOR",
+			"DMIC1", "Internal Microphone",
+			"Headset Microphone", "MICBIAS1",
+			"IN2P", "Headset Microphone",
+			"Line Out Modem", "LOUTL",
+			"Line Out Modem", "LOUTR",
+			"IN3P", "Line In Modem",
+			"IN3N", "Line In Modem";
+
+		simple-audio-card,cpu {
+			sound-dai = <&i2s0>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&rt5640>;
+		};
+	};
+
+	speaker_amp: audio-amplifier {
+		compatible = "simple-audio-amplifier";
+		pinctrl-names = "default";
+		pinctrl-0 = <&spk_en>;
+		enable-gpios = <&gpio0 RK_PB3 GPIO_ACTIVE_HIGH>;
+		sound-name-prefix = "Speaker Amp";
+	};
+
 	sdio_pwrseq: sdio-pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		clocks = <&rk818 1>;
@@ -737,6 +800,24 @@ ucam_out: endpoint {
 			};
 		};
 	};
+
+	// XXX: modem codec supplies:
+	// - vcc1v8_codec
+	// - vcca3v0_codec
+
+	// supplies: (always on currently)
+	// - vcca3v0_codec
+	// - vcca1v8_codec
+	// - vcc5v0_sys - spk_vcc
+	rt5640: rt5640@1c {
+		compatible = "realtek,rt5640";
+		reg = <0x1c>;
+		clocks = <&cru SCLK_I2S_8CH_OUT>;
+		clock-names = "mclk";
+		realtek,dmic1-data-pin = <1>;
+		realtek,in3-differential;
+		#sound-dai-cells = <0>;
+	};
 };
 
 &i2c3 {
@@ -874,6 +955,13 @@ ak09911: compass@c {
 	};
 };
 
+&i2s0 {
+	rockchip,playback-channels = <2>;
+	rockchip,capture-channels = <2>;
+	pinctrl-0 = <&i2s0_2ch_bus>;
+	status = "okay";
+};
+
 &io_domains {
 	status = "okay";
 
@@ -1086,6 +1174,14 @@ sound {
 		vcc1v8_codec_en: vcc1v8-codec-en {
 			rockchip,pins = <3 RK_PA4 RK_FUNC_GPIO &pcfg_pull_down>;
 		};
+
+		hp_det: hp-det {
+			rockchip,pins = <4 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		spk_en: spk-en {
+			rockchip,pins = <0 RK_PB3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
 	};
 };