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From:   Daniel Baluta <daniel.baluta@nxp.com>
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Subject: [PATCH v7 4/4] arm64: dts: imx8mq-evk: Enable audio codec wm8524
Thread-Topic: [PATCH v7 4/4] arm64: dts: imx8mq-evk: Enable audio codec wm8524
Thread-Index: AQHU3nv9zNj885nj2EaiynwBXWQ+Ig==
Date:   Tue, 19 Mar 2019 17:48:41 +0000
Message-ID: <20190319174823.29467-5-daniel.baluta@nxp.com>
References: <20190319174823.29467-1-daniel.baluta@nxp.com>
In-Reply-To: <20190319174823.29467-1-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>
Reviewed-by: Fabio Estevam <festevam@gmail.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 afea110b70a3..304c28034ddf 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -43,6 +43,35 @@
 		states =3D <1000000 0x0
 			  900000 0x1>;
 	};
+
+	wm8524: audio-codec {
+		#sound-dai-cells =3D <0>;
+		compatible =3D "wlf,wm8524";
+		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
 &A53_0 {
@@ -80,6 +109,15 @@
 	};
 };
=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";
@@ -283,6 +321,16 @@
 		>;
 	};
=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_uart1: uart1grp {
 		fsl,pins =3D <
 			MX8MQ_IOMUXC_UART1_RXD_UART1_DCE_RX		0x49
--=20
2.17.1