ARM: DTS: stm32: add MMC nodes for stm32f746-disco and stm32f769-disco
Add DT nodes to enable ARM_PL180_MMCI IP support for STM32F746
and STM32F769 discovery boards
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.
As workaround, cd-gpios property is not present in DT.
So SD card is always considered present in the slot.
Signed-off-by: Christophe Priouzeau <christophe.priouzeau@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/stm32f746-disco.dts b/arch/arm/dts/stm32f746-disco.dts
index c92c2e2..9e8d2a0 100644
--- a/arch/arm/dts/stm32f746-disco.dts
+++ b/arch/arm/dts/stm32f746-disco.dts
@@ -65,6 +65,7 @@
aliases {
serial0 = &usart1;
spi0 = &qspi;
+ mmc0 = &sdio;
/* Aliases for gpios so as to use sequence */
gpio0 = &gpioa;
gpio1 = &gpiob;
@@ -238,3 +239,14 @@
reg = <0>;
};
};
+
+&sdio {
+ status = "okay";
+ cd-gpios = <&gpioc 13 0>;
+ cd-inverted;
+ pinctrl-names = "default", "opendrain";
+ pinctrl-0 = <&sdio_pins>;
+ pinctrl-1 = <&sdio_pins_od>;
+ bus-width = <4>;
+ max-frequency = <25000000>;
+};