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>

1 files changed, 74 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/imx6ul-14x14-evk.dts b/arch/arm/boot/dts/imx6ul-14x14-evk.dts
index 720728001d3c..668a72997590 100644
--- 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