From b903a6c5aaa862f8b88f4be4431ccca3b6fbc187 Mon Sep 17 00:00:00 2001
From: Sameer Pujar <spujar@nvidia.com>
Date: Mon, 13 Feb 2023 10:14:34 +0530
Subject: [PATCH] arm64: tegra: Audio codec support on Jetson AGX Orin

Jetson AGX Orin has onboard RT5640 audio codec. This patch adds the
codec device node and the bindings to I2S1 interface.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 .../dts/nvidia/tegra234-p3737-0000+p3701-0000.dts  | 45 +++++++++++++++++++++-
 1 file changed, 44 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
index 8a97478..ddc057f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
@@ -3,6 +3,7 @@
 
 #include <dt-bindings/input/linux-event-codes.h>
 #include <dt-bindings/input/gpio-keys.h>
+#include <dt-bindings/sound/rt5640.h>
 
 #include "tegra234-p3701-0000.dtsi"
 #include "tegra234-p3737-0000.dtsi"
@@ -49,7 +50,7 @@
 
 							i2s1_dap: endpoint {
 								dai-format = "i2s";
-								/* placeholder for external codec */
+								remote-endpoint = <&rt5640_ep>;
 							};
 						};
 					};
@@ -2017,6 +2018,30 @@
 			status = "okay";
 		};
 
+		i2c@31e0000 {
+			status = "okay";
+
+			audio-codec@1c {
+				compatible = "realtek,rt5640";
+				reg = <0x1c>;
+				interrupt-parent = <&gpio>;
+				interrupts = <TEGRA234_MAIN_GPIO(AC, 5) GPIO_ACTIVE_HIGH>;
+				clocks = <&bpmp TEGRA234_CLK_AUD_MCLK>;
+				clock-names = "mclk";
+				realtek,dmic1-data-pin = <RT5640_DMIC1_DATA_PIN_NONE>;
+				realtek,dmic2-data-pin = <RT5640_DMIC2_DATA_PIN_NONE>;
+				realtek,jack-detect-source = <RT5640_JD_SRC_HDA_HEADER>;
+				sound-name-prefix = "CVB-RT";
+
+				port {
+					rt5640_ep: endpoint {
+						remote-endpoint = <&i2s1_dap>;
+						mclk-fs = <256>;
+					};
+				};
+			};
+		};
+
 		pwm@32a0000 {
 			assigned-clocks = <&bpmp TEGRA234_CLK_PWM3>;
 			assigned-clock-parents = <&bpmp TEGRA234_CLK_PLLP_OUT0>;
@@ -2293,5 +2318,23 @@
 		       <&dmic3_port>;
 
 		label = "NVIDIA Jetson AGX Orin APE";
+
+		widgets = "Microphone",	"CVB-RT MIC Jack",
+			  "Microphone",	"CVB-RT MIC",
+			  "Headphone",	"CVB-RT HP Jack",
+			  "Speaker",	"CVB-RT SPK";
+
+		routing = /* I2S1 <-> RT5640 */
+			  "CVB-RT AIF1 Playback",	"I2S1 DAP-Playback",
+			  "I2S1 DAP-Capture",		"CVB-RT AIF1 Capture",
+			  /* RT5640 codec controls */
+			  "CVB-RT HP Jack",		"CVB-RT HPOL",
+			  "CVB-RT HP Jack",		"CVB-RT HPOR",
+			  "CVB-RT IN1P",		"CVB-RT MIC Jack",
+			  "CVB-RT IN2P",		"CVB-RT MIC Jack",
+			  "CVB-RT SPK",			"CVB-RT SPOLP",
+			  "CVB-RT SPK",			"CVB-RT SPORP",
+			  "CVB-RT DMIC1",		"CVB-RT MIC",
+			  "CVB-RT DMIC2",		"CVB-RT MIC";
 	};
 };
-- 
2.7.4