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From:   Daniel Baluta <daniel.baluta@nxp.com>
To:     "shawnguo@kernel.org" <shawnguo@kernel.org>
CC:     "mark.rutland@arm.com" <mark.rutland@arm.com>,
        "robh+dt@kernel.org" <robh+dt@kernel.org>,
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        Aisheng Dong <aisheng.dong@nxp.com>,
        Anson Huang <anson.huang@nxp.com>,
        "S.j. Wang" <shengjiu.wang@nxp.com>, Peng Fan <peng.fan@nxp.com>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
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        <linux-arm-kernel@lists.infradead.org>,
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        "m.felsch@pengutronix.de" <m.felsch@pengutronix.de>,
        Daniel Baluta <daniel.baluta@nxp.com>
Subject: [PATCH v3 2/2] arm64: dts: imx8mm-evk: Enable audio codec wm8524
Thread-Topic: [PATCH v3 2/2] arm64: dts: imx8mm-evk: Enable audio codec wm8524
Thread-Index: AQHVCyxr/1Fx7JEh8EGBF02px5rSJw==
Date:   Wed, 15 May 2019 14:42:29 +0000
Message-ID: <20190515144210.25596-3-daniel.baluta@nxp.com>
References: <20190515144210.25596-1-daniel.baluta@nxp.com>
In-Reply-To: <20190515144210.25596-1-daniel.baluta@nxp.com>
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i.MX8MM has one wm8524 audio codec connected with
SAI3 digital audio interface.

This patch uses simple-card machine driver in order
to enable wm8524 codec.

We need to set:
	* SAI3 pinctrl configuration
	* codec reset gpio pinctrl configuration
	* clock hierarchy
	* codec node
	* simple-card configuration

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 55 ++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot=
/dts/freescale/imx8mm-evk.dts
index 2d5d89475b76..7c578d8762b9 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
@@ -37,6 +37,37 @@
 		gpio =3D <&gpio2 19 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	wm8524: audio-codec {
+		#sound-dai-cells =3D <0>;
+		compatible =3D "wlf,wm8524";
+		pinctrl-names =3D "default";
+		pinctrl-0 =3D <&pinctrl_gpio_wlf>;
+		wlf,mute-gpios =3D <&gpio5 21 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 <&sai3>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai =3D <&wm8524>;
+			clocks =3D <&clk IMX8MM_CLK_SAI3_ROOT>;
+		};
+	};
 };
=20
 &fec1 {
@@ -61,6 +92,15 @@
 	};
 };
=20
+&sai3 {
+	pinctrl-names =3D "default";
+	pinctrl-0 =3D <&pinctrl_sai3>;
+	assigned-clocks =3D <&clk IMX8MM_CLK_SAI3>;
+	assigned-clock-parents =3D <&clk IMX8MM_AUDIO_PLL1_OUT>;
+	assigned-clock-rates =3D <24576000>;
+	status =3D "okay";
+};
+
 &uart2 { /* console */
 	pinctrl-names =3D "default";
 	pinctrl-0 =3D <&pinctrl_uart2>;
@@ -124,12 +164,27 @@
 		>;
 	};
=20
+	pinctrl_gpio_wlf: gpiowlfgrp {
+		fsl,pins =3D <
+			MX8MM_IOMUXC_I2C4_SDA_GPIO5_IO21        0xd6
+		>;
+	};
+
 	pinctrl_reg_usdhc2_vmmc: regusdhc2vmmc {
 		fsl,pins =3D <
 			MX8MM_IOMUXC_SD2_RESET_B_GPIO2_IO19	0x41
 		>;
 	};
=20
+	pinctrl_sai3: sai3grp {
+		fsl,pins =3D <
+			MX8MM_IOMUXC_SAI3_TXFS_SAI3_TX_SYNC     0xd6
+			MX8MM_IOMUXC_SAI3_TXC_SAI3_TX_BCLK      0xd6
+			MX8MM_IOMUXC_SAI3_MCLK_SAI3_MCLK        0xd6
+			MX8MM_IOMUXC_SAI3_TXD_SAI3_TX_DATA0     0xd6
+		>;
+	};
+
 	pinctrl_uart2: uart2grp {
 		fsl,pins =3D <
 			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX	0x140
--=20
2.17.1