WIP: add I2S output on stm32h7s78_dk

Signed-off-by: Titouan Christophe <[email protected]>

Author: titouanc

boards/st/stm32h7s78_dk/stm32h7s78_dk.dts

@@ -171,6 +171,23 @@
 &i2c1 {
 	pinctrl-0 = <&i2c1_scl_pb6 &i2c1_sda_pb9>;
 	pinctrl-names = "default";
+	status = "okay";
+
+	audio_codec: wm8904g@1a {
+		compatible = "wolfson,wm8904";
+		reg = <0x1a>;
+	};
+};
+
+&gpdma1 {
+	status = "okay";
+};
+
+&i2s6 {
+	mck-enabled;
+	pinctrl-0 = <&i2s6_mck_pa3 &i2s6_ws_pa4 &i2s6_ck_pa5 &spi6_mosi_pb5 &spi6_miso_pg12>;
+	pinctrl-names = "default";
+	status = "okay";
 };
 
 &die_temp {

dts/arm/st/h7rs/stm32h7rs.dtsi

@@ -15,6 +15,7 @@
 #include <zephyr/dt-bindings/adc/adc.h>
 #include <zephyr/dt-bindings/memory-attr/memory-attr.h>
 #include <zephyr/dt-bindings/memory-attr/memory-attr-arm.h>
+#include <zephyr/dt-bindings/dma/stm32_dma.h>
 #include <freq.h>
 
 /*
@@ -326,6 +327,19 @@
 			};
 		};
 
+		gpdma1: dma@40021000 {
+			compatible = "st,stm32u5-dma";
+			reg = <0x40021000 0x1000>;
+			#dma-cells = <3>;
+			clocks = <&rcc STM32_CLOCK(AHB1, 4)>;
+			interrupts = <39 0 40 0 41 0 42 0 43 0 44 0 45 0 46 0
+				      133 0 134 0 135 0 136 0 137 0 138 0 139 0 140 0>;
+			dma-channels = <16>;
+			dma-requests = <110>;
+			dma-offset = <0>;
+			status = "disabled";
+		};
+
 		usart1: serial@42001000 {
 			compatible = "st,stm32-usart", "st,stm32-uart";
 			reg = <0x42001000 0x400>;
@@ -492,6 +506,20 @@
 			status = "disabled";
 		};
 
+		i2s6: i2s@58001400 {
+			compatible = "st,stm32h7-i2s", "st,stm32-i2s";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x58001400 0x400>;
+			clocks = <&rcc STM32_CLOCK(APB4, 5U)>,
+				 <&rcc STM32_CLOCK_BUS_APB4 SPI6_SEL(0)>;
+			interrupts = <63 3>;
+			dmas = <&gpdma1 0 62 (STM32_DMA_PERIPH_TX | STM32_DMA_16BITS | STM32_DMA_PRIORITY_HIGH)
+				&gpdma1 1 61 (STM32_DMA_PERIPH_RX | STM32_DMA_16BITS | STM32_DMA_PRIORITY_HIGH)>;
+			dma-names = "tx", "rx";
+			status = "disabled";
+		};
+
 		iwdg: iwdg1: watchdog@58004800 {
 			compatible = "st,stm32-watchdog";
 			reg = <0x58004800 0x400>;