ARM: dts: stm32: Add bindings for audio on AV96

Fill in the bindings for HDMI audio on AV96, this permits audio playback
via attached HDMI device if such device supports it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

diff --git a/arch/arm/boot/dts/stm32mp157a-avenger96.dts b/arch/arm/boot/dts/stm32mp157a-avenger96.dts
index 85116e1..f04ad8d 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157a-avenger96.dts
+++ b/arch/arm/boot/dts/stm32mp157a-avenger96.dts
@@ -98,6 +98,13 @@
                         <2900000 0x0>;
        };
 
+       sound {
+               compatible = "audio-graph-card";
+               label = "STM32MP1-AV96-HDMI";
+               dais = <&sai2a_port>;
+               status = "okay";
+       };
+
        /* Enpirion EP3A8LQI U2 on the DHCOR */
        vdd_io: regulator-buck-io {
                compatible = "regulator-fixed";
@@ -361,6 +368,13 @@
                                        remote-endpoint = <&hdmi_con>;
                                };
                        };
+
+                       port@2 {
+                               reg = <2>;
+                               adv7513_i2s0: endpoint {
+                                       remote-endpoint = <&sai2a_endpoint>;
+                               };
+                       };
                };
        };
 
@@ -425,6 +439,31 @@
        status = "okay";
 };
 
+&sai2 {
+       clocks = <&rcc SAI2>, <&rcc PLL3_Q>, <&rcc PLL3_R>;
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&sai2a_pins_c>;
+       pinctrl-1 = <&sai2a_sleep_pins_c>;
+       clock-names = "pclk", "x8k", "x11k";
+       status = "okay";
+
+       sai2a: audio-controller@4400b004 {
+               #clock-cells = <0>;
+               dma-names = "tx";
+               clocks = <&rcc SAI2_K>;
+               clock-names = "sai_ck";
+               status = "okay";
+
+               sai2a_port: port {
+                       sai2a_endpoint: endpoint {
+                               remote-endpoint = <&adv7513_i2s0>;
+                               format = "i2s";
+                               mclk-fs = <256>;
+                       };
+               };
+       };
+};
+
 &sdmmc1 {
        pinctrl-names = "default", "opendrain", "sleep";
        pinctrl-0 = <&sdmmc1_b4_pins_a &sdmmc1_dir_pins_b>;