ARM: DTS: stm32: add SDMMC support for stm32h743 disco

Add pinctrl and sdmmc nodes to add MMC support for
STM32H743 discovery board.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

arch/arm/dts/stm32h743-pinctrl.dtsi

@@ -244,6 +244,21 @@
 					  slew-rate = <3>;
 				};
 			};
+
+			sdmmc1_pins: sdmmc@0 {
+				pins {
+					pinmux = <STM32H7_PC8_FUNC_SDMMC1_D0>,
+						 <STM32H7_PC9_FUNC_SDMMC1_D1>,
+						 <STM32H7_PC10_FUNC_SDMMC1_D2>,
+						 <STM32H7_PC11_FUNC_SDMMC1_D3>,
+						 <STM32H7_PC12_FUNC_SDMMC1_CK>,
+						 <STM32H7_PD2_FUNC_SDMMC1_CMD>;
+
+					slew-rate = <3>;
+					drive-push-pull;
+					bias-disable;
+				};
+			};
 		};
 	};
 };

arch/arm/dts/stm32h743.dtsi

@@ -43,6 +43,7 @@
 #include "skeleton.dtsi"
 #include "armv7-m.dtsi"
 #include <dt-bindings/clock/stm32h7-clks.h>
+#include <dt-bindings/mfd/stm32h7-rcc.h>
 
 / {
 	clocks {
@@ -120,6 +121,18 @@
 			compatible = "fixed-clock";
 			clock-frequency = <4000000>;
 		};
+
+		sdmmc1: sdmmc@52007000 {
+			compatible = "st,stm32-sdmmc2";
+			reg = <0x52007000 0x1000>;
+			interrupts = <49>;
+			clocks = <&rcc SDMMC1_CK>;
+			resets = <&rcc STM32H7_AHB3_RESET(SDMMC1)>;
+			st,idma = <1>;
+			cap-sd-highspeed;
+			cap-mmc-highspeed;
+			status = "disabled";
+		};
 	};
 };
 

arch/arm/dts/stm32h743i-disco.dts

@@ -60,6 +60,7 @@
 
 	aliases {
 		serial0 = &usart2;
+		mmc0 = &sdmmc1;
 		gpio0 = &gpioa;
 		gpio1 = &gpiob;
 		gpio2 = &gpioc;
@@ -98,3 +99,11 @@
 		st,sdram-refcount = <1539>;
 	};
 };
+
+&sdmmc1 {
+	status = "okay";
+	pinctrl-0 = <&sdmmc1_pins>;
+	pinctrl-names = "default";
+	bus-width = <4>;
+	cd-gpios = <&gpioi 8 1>;
+};