[PATCH] ARM: dts: stm32: add hdmi audio support to stm32mp157a-dk1 board

[Olivier Moysan]

Add HDMI audio support through Sil9022 HDMI transceiver
on stm32mp157a-dk1 board.

Signed-off-by: Olivier Moysan <olivier.moy...@st.com>
---
 arch/arm/boot/dts/stm32mp157a-dk1.dts | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts 
b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 5ad4cef9e971..7a20640c00a9 100644
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -92,7 +92,7 @@
                        "Playback" , "MCLK",
                        "Capture" , "MCLK",
                        "MICL" , "Mic Bias";
-               dais = <&sai2a_port &sai2b_port>;
+               dais = <&sai2a_port &sai2b_port &i2s2_port>;
                status = "okay";
        };
 };
@@ -173,6 +173,7 @@
                reset-gpios = <&gpioa 10 GPIO_ACTIVE_LOW>;
                interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
                interrupt-parent = <&gpiog>;
+               #sound-dai-cells = <0>;
                status = "okay";
 
                ports {
@@ -185,6 +186,13 @@
                                        remote-endpoint = <&ltdc_ep0_out>;
                                };
                        };
+
+                       port@3 {
+                               reg = <3>;
+                               sii9022_tx_endpoint: endpoint {
+                                       remote-endpoint = <&i2s2_endpoint>;
+                               };
+                       };
                };
        };
 
@@ -370,6 +378,23 @@
        };
 };
 
+&i2s2 {
+       clocks = <&rcc SPI2>, <&rcc SPI2_K>, <&rcc PLL3_Q>, <&rcc PLL3_R>;
+       clock-names = "pclk", "i2sclk", "x8k", "x11k";
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&i2s2_pins_a>;
+       pinctrl-1 = <&i2s2_pins_sleep_a>;
+       status = "okay";
+
+       i2s2_port: port {
+               i2s2_endpoint: endpoint {
+                       remote-endpoint = <&sii9022_tx_endpoint>;
+                       format = "i2s";
+                       mclk-fs = <256>;
+               };
+       };
+};
+
 &ipcc {
        status = "okay";
 };
-- 
2.17.1