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From:   Daniel Baluta <daniel.baluta@nxp.com>
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Subject: [PATCH v5 4/4] arm64: dts: imx8mq-evk: Enable audio codec wm8524
Thread-Topic: [PATCH v5 4/4] arm64: dts: imx8mq-evk: Enable audio codec wm8524
Thread-Index: AQHU0EzvmbmmBYzki0GfnU9Q6JIYFA==
Date:   Fri, 1 Mar 2019 16:36:36 +0000
Message-ID: <20190301163604.10618-5-daniel.baluta@nxp.com>
References: <20190301163604.10618-1-daniel.baluta@nxp.com>
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The main Audio DAC used on the EVK board is wm8524.
The EVK provides the MCLK to wm8524.

Digital interface is SAI2 which includes three signals:
SYNC_CLK, BCLK and DACDAT.

This patch sets:
	* SAI2 pinctrl configuration
	* clock hierarchy
	* wm8524 codec

Then uses simple-card machine driver to connect them
into a sound card.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 48 ++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot=
/dts/freescale/imx8mq-evk.dts
index 54737bf1772f..8666af6bea5b 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -31,6 +31,35 @@
 		gpio =3D <&gpio2 19 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	wm8524: audio-codec {
+		#sound-dai-cells =3D <0>;
+		compatible =3D "wlf,wm8524";
+		clocks =3D <&clk IMX8MQ_CLK_SAI2_ROOT>;
+		clock-names =3D "mclk";
+		wlf,mute-gpios =3D <&gpio1 8 GPIO_ACTIVE_LOW>;
+	};
+
+	sound-wm8524 {
+		compatible =3D "simple-audio-card";
+		simple-audio-card,name =3D "wm8524-audio";
+		simple-audio-card,format =3D "i2s";
+		simple-audio-card,frame-master =3D <&cpudai>;
+		simple-audio-card,bitclock-master =3D <&cpudai>;
+		simple-audio-card,widgets =3D
+			"Line", "Left Line Out Jack",
+			"Line", "Right Line Out Jack";
+		simple-audio-card,routing =3D
+			"Left Line Out Jack", "LINEVOUTL",
+			"Right Line Out Jack", "LINEVOUTR";
+		cpudai: simple-audio-card,cpu {
+			sound-dai =3D <&sai2>;
+		};
+		link_codec: simple-audio-card,codec {
+			sound-dai =3D <&wm8524>;
+			clocks =3D <&clk IMX8MQ_CLK_SAI2_ROOT>;
+		};
+	};
 };
=20
 &fec1 {
@@ -52,6 +81,15 @@
 	};
 };
=20
+&sai2 {
+	pinctrl-names =3D "default";
+	pinctrl-0 =3D <&pinctrl_sai2>;
+	assigned-clocks =3D <&clk IMX8MQ_CLK_SAI2>;
+	assigned-clock-parents =3D <&clk IMX8MQ_AUDIO_PLL1_OUT>;
+	assigned-clock-rates =3D <24576000>;
+	status =3D "okay";
+};
+
 &i2c1 {
 	clock-frequency =3D <100000>;
 	pinctrl-names =3D "default";
@@ -223,6 +261,16 @@
 		>;
 	};
=20
+	pinctrl_sai2: sai2grp {
+		fsl,pins =3D <
+			MX8MQ_IOMUXC_SAI2_TXFS_SAI2_TX_SYNC     0xd6
+			MX8MQ_IOMUXC_SAI2_TXC_SAI2_TX_BCLK      0xd6
+			MX8MQ_IOMUXC_SAI2_MCLK_SAI2_MCLK        0xd6
+			MX8MQ_IOMUXC_SAI2_TXD0_SAI2_TX_DATA0    0xd6
+			MX8MQ_IOMUXC_GPIO1_IO08_GPIO1_IO8       0xd6
+		>;
+	};
+
 	pinctrl_i2c1: i2c1grp {
 		fsl,pins =3D <
 			MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL			0x4000007f
--=20
2.17.1