ARM: dts: imx6ul-14x14-evk: Add audio support

imx6ul-14x14-evk has a wm8960 codec connected via SAI2 port.

Add support for it.

Thanks to Petr Kulhavy <brain@jikos.cz> for the hint on initializing
the PLL4 frequency to get a correct MCLK.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx6ul-14x14-evk.dts b/arch/arm/boot/dts/imx6ul-14x14-evk.dts
index 7207280..668a729 100644 (file)
--- a/arch/arm/boot/dts/imx6ul-14x14-evk.dts
+++ b/arch/arm/boot/dts/imx6ul-14x14-evk.dts
@@ -36,6 +36,45 @@
                        enable-active-high;
                };
        };
+
+       sound {
+               compatible = "simple-audio-card";
+               simple-audio-card,name = "mx6ul-wm8960";
+               simple-audio-card,format = "i2s";
+               simple-audio-card,bitclock-master = <&dailink_master>;
+               simple-audio-card,frame-master = <&dailink_master>;
+               simple-audio-card,widgets =
+                       "Microphone", "Mic Jack",
+                       "Line", "Line In",
+                       "Line", "Line Out",
+                       "Speaker", "Speaker",
+                       "Headphone", "Headphone Jack";
+               simple-audio-card,routing =
+                       "Headphone Jack", "HP_L",
+                       "Headphone Jack", "HP_R",
+                       "Speaker", "SPK_LP",
+                       "Speaker", "SPK_LN",
+                       "Speaker", "SPK_RP",
+                       "Speaker", "SPK_RN",
+                       "LINPUT1", "Mic Jack",
+                       "LINPUT3", "Mic Jack",
+                       "RINPUT1", "Mic Jack",
+                       "RINPUT2", "Mic Jack";
+
+               simple-audio-card,cpu {
+                       sound-dai = <&sai2>;
+               };
+
+               dailink_master: simple-audio-card,codec {
+                       sound-dai = <&codec>;
+                       clocks = <&clks IMX6UL_CLK_SAI2>;
+               };
+       };
+};
+
+&clks {
+       assigned-clocks = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+       assigned-clock-rates = <786432000>;
 };
 
 &cpu0 {
@@ -43,6 +82,20 @@
        soc-supply = <&reg_soc>;
 };
 
+&i2c2 {
+       clock_frequency = <100000>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_i2c2>;
+       status = "okay";
+
+       codec: wm8960@1a {
+               #sound-dai-cells = <0>;
+               compatible = "wlf,wm8960";
+               reg = <0x1a>;
+               wlf,shared-lrclk;
+       };
+};
+
 &fec1 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_enet1>;
@@ -86,6 +139,16 @@
        };
 };
 
+&sai2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_sai2>;
+       assigned-clocks = <&clks IMX6UL_CLK_SAI2_SEL>,
+                         <&clks IMX6UL_CLK_SAI2>;
+       assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+       assigned-clock-rates = <0>, <12288000>;
+       status = "okay";
+};
+
 &snvs_poweroff {
        status = "okay";
 };
@@ -272,6 +335,17 @@
                >;
        };
 
+       pinctrl_sai2: sai2grp {
+               fsl,pins = <
+                       MX6UL_PAD_JTAG_TDI__SAI2_TX_BCLK        0x17088
+                       MX6UL_PAD_JTAG_TDO__SAI2_TX_SYNC        0x17088
+                       MX6UL_PAD_JTAG_TRST_B__SAI2_TX_DATA     0x11088
+                       MX6UL_PAD_JTAG_TCK__SAI2_RX_DATA        0x11088
+                       MX6UL_PAD_JTAG_TMS__SAI2_MCLK           0x17088
+                       MX6UL_PAD_SNVS_TAMPER4__GPIO5_IO04      0x17059
+               >;
+       };
+
        pinctrl_pwm1: pwm1grp {
                fsl,pins = <
                        MX6UL_PAD_GPIO1_IO08__PWM1_OUT   0x110b0