From 7f515ea33dffae8601d8a050bfdeca7fb37f573a Mon Sep 17 00:00:00 2001
From: Vit Stanicek <vit.stanicek@nxp.com>
Date: Tue, 2 Jul 2024 10:09:54 +0200
Subject: [PATCH] dts: mimxrt685_evk/mimxrt685s/hifi4: Enable devs for audio

Instantiate, configure and enable Flexcomm #1, Flexcomm #3, DMA, I3C for
audio capture and playback on mimxrt685_evk's HiFi 4 DSP domain. Add
pinmux definitions for those.

Signed-off-by: Vit Stanicek <vit.stanicek@nxp.com>
---
 .../mimxrt685_evk_mimxrt685s_hifi4.dts        | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/boards/nxp/mimxrt685_evk/mimxrt685_evk_mimxrt685s_hifi4.dts b/boards/nxp/mimxrt685_evk/mimxrt685_evk_mimxrt685s_hifi4.dts
index 9491c796a4c011..f5c7d03d06fed7 100644
--- a/boards/nxp/mimxrt685_evk/mimxrt685_evk_mimxrt685s_hifi4.dts
+++ b/boards/nxp/mimxrt685_evk/mimxrt685_evk_mimxrt685s_hifi4.dts
@@ -69,12 +69,60 @@
 			drive-strength = "normal";
 		};
 	};
+
+	pinmux_flexcomm1_i2s: pinmux_flexcomm1_i2s {
+		group0 {
+			pinmux = <FC1_RXD_SDA_MOSI_DATA_PIO0_9>;
+			input-enable;
+			slew-rate = "normal";
+			drive-strength = "high";
+		};
+	};
+
+	pinmux_flexcomm3_i2s: pinmux_flexcomm3_i2s {
+		group0 {
+			pinmux = <FC3_RXD_SDA_MOSI_DATA_PIO0_23>,
+				<FC3_TXD_SCL_MISO_WS_PIO0_22>,
+				<FC3_SCK_PIO0_21>;
+			input-enable;
+			slew-rate = "normal";
+			drive-strength = "high";
+		};
+	};
+
+	pinmux_codec: pinmux_codec {
+		group0 {
+			pinmux = <MCLK_PIO1_10>;
+			slew-rate = "normal";
+			drive-strength = "high";
+		};
+	};
+
+	pinmux_i3c: pinmux_i3c {
+		group0 {
+			pinmux = <I3C0_SCL_PIO2_29>,
+				<I3C0_SDA_PIO2_30>;
+			input-enable;
+			slew-rate = "slow";
+			drive-strength = "high";
+		};
+
+		group1 {
+			pinmux = <I3C0_PUR_PIO2_31>;
+			slew-rate = "normal";
+			drive-strength = "normal";
+		};
+	};
 };
 
 &gpio0 {
 	status = "okay";
 };
 
+&dma1 {
+	status = "okay";
+};
+
 &flexcomm0 {
 	compatible = "nxp,lpc-usart";
 	pinctrl-0 = <&pinmux_flexcomm0_usart>;
@@ -86,3 +134,40 @@
 &mbox {
 	status = "okay";
 };
+/* I2S receive channel */
+i2s0: &flexcomm1 {
+	status = "okay";
+	compatible = "nxp,lpc-i2s";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	dmas = <&dma1 2>;
+	dma-names = "rx";
+	pinctrl-0 = <&pinmux_flexcomm1_i2s>;
+	pinctrl-names = "default";
+};
+
+/* I2S transmit channel */
+i2s1: &flexcomm3 {
+	status = "okay";
+	compatible = "nxp,lpc-i2s";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	dmas = <&dma1 7>;
+	dma-names = "tx";
+	pinctrl-0 = <&pinmux_flexcomm3_i2s>;
+	pinctrl-names = "default";
+};
+
+&i3c0 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_i3c>;
+	pinctrl-names = "default";
+
+	audio_codec: wm8904@1a {
+		pinctrl-0 = <&pinmux_codec>;
+		pinctrl-names = "default";
+		compatible = "wolfson,wm8904";
+		reg = <0x1a 0 0>;
+		clock-source = "MCLK";
+	};
+};
\ No newline at end of file