arm64: dts: imx8mm-evk: Enable audio codec wm8524

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>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
index 594f15820c17b7950d2e9c683f41479265a4e5b3..ee7f2b2fc1ffa7e3cd00ca1770b278de3146308d 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
@@ -37,6 +37,37 @@
                gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
                enable-active-high;
        };
+
+       wm8524: audio-codec {
+               #sound-dai-cells = <0>;
+               compatible = "wlf,wm8524";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_gpio_wlf>;
+               wlf,mute-gpios = <&gpio5 21 GPIO_ACTIVE_LOW>;
+       };
+
+       sound-wm8524 {
+               compatible = "simple-audio-card";
+               simple-audio-card,name = "wm8524-audio";
+               simple-audio-card,format = "i2s";
+               simple-audio-card,frame-master = <&cpudai>;
+               simple-audio-card,bitclock-master = <&cpudai>;
+               simple-audio-card,widgets =
+                       "Line", "Left Line Out Jack",
+                       "Line", "Right Line Out Jack";
+               simple-audio-card,routing =
+                       "Left Line Out Jack", "LINEVOUTL",
+                       "Right Line Out Jack", "LINEVOUTR";
+
+               cpudai: simple-audio-card,cpu {
+                       sound-dai = <&sai3>;
+               };
+
+               simple-audio-card,codec {
+                       sound-dai = <&wm8524>;
+                       clocks = <&clk IMX8MM_CLK_SAI3_ROOT>;
+               };
+       };
 };
 
 &A53_0 {
@@ -65,6 +96,15 @@
        };
 };
 
+&sai3 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_sai3>;
+       assigned-clocks = <&clk IMX8MM_CLK_SAI3>;
+       assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
+       assigned-clock-rates = <24576000>;
+       status = "okay";
+};
+
 &snvs_pwrkey {
        status = "okay";
 };
@@ -246,6 +286,12 @@
                >;
        };
 
+       pinctrl_gpio_wlf: gpiowlfgrp {
+               fsl,pins = <
+                       MX8MM_IOMUXC_I2C4_SDA_GPIO5_IO21        0xd6
+               >;
+       };
+
        pinctrl_i2c1: i2c1grp {
                fsl,pins = <
                        MX8MM_IOMUXC_I2C1_SCL_I2C1_SCL                  0x400001c3
@@ -265,6 +311,15 @@
                >;
        };
 
+       pinctrl_sai3: sai3grp {
+               fsl,pins = <
+                       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 = <
                        MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX     0x140