ARM: dts: stm32: Enable SDIO controller on stm32f469 disco board

This patch adds SDIO-related DT nodes required by stm32f469 board

There is a hardware issue on these boards, it misses a pullup on
the GPIO line used as card detect to allow correct SD card
detection. To allow correct card detection "broken-cd" property
is used.
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32f469-disco.dts

@@ -48,6 +48,7 @@
 /dts-v1/;
 #include "stm32f429.dtsi"
 #include "stm32f469-pinctrl.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "STMicroelectronics STM32F469i-DISCO board";
@@ -66,6 +67,13 @@ aliases {
 		serial0 = &usart3;
 	};
 
+	mmc_vcard: mmc_vcard {
+		compatible = "regulator-fixed";
+		regulator-name = "mmc_vcard";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
 	soc {
 		dma-ranges = <0xc0000000 0x0 0x10000000>;
 	};
@@ -120,6 +128,18 @@ timer@2 {
 	};
 };
 
+&sdio {
+	status = "okay";
+	vmmc-supply = <&mmc_vcard>;
+	cd-gpios = <&gpiog 2 GPIO_ACTIVE_HIGH>;
+	cd-inverted;
+	broken-cd;
+	pinctrl-names = "default", "opendrain";
+	pinctrl-0 = <&sdio_pins>;
+	pinctrl-1 = <&sdio_pins_od>;
+	bus-width = <4>;
+};
+
 &usart3 {
 	pinctrl-0 = <&usart3_pins_a>;
 	pinctrl-names = "default";