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>;
+};
diff --git a/arch/arm/dts/stm32f746.dtsi b/arch/arm/dts/stm32f746.dtsi
index f62360f..929bf82 100644
--- a/arch/arm/dts/stm32f746.dtsi
+++ b/arch/arm/dts/stm32f746.dtsi
@@ -234,6 +234,91 @@
u-boot,dm-pre-reloc;
};
+ sdio_pins: sdio_pins@0 {
+ pins {
+ pinmux = <STM32F746_PC8_FUNC_SDMMC1_D0>,
+ <STM32F746_PC9_FUNC_SDMMC1_D1>,
+ <STM32F746_PC10_FUNC_SDMMC1_D2>,
+ <STM32F746_PC11_FUNC_SDMMC1_D3>,
+ <STM32F746_PC12_FUNC_SDMMC1_CK>,
+ <STM32F746_PD2_FUNC_SDMMC1_CMD>;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+ };
+
+ sdio_pins_od: sdio_pins_od@0 {
+ pins1 {
+ pinmux = <STM32F746_PC8_FUNC_SDMMC1_D0>,
+ <STM32F746_PC9_FUNC_SDMMC1_D1>,
+ <STM32F746_PC10_FUNC_SDMMC1_D2>,
+ <STM32F746_PC11_FUNC_SDMMC1_D3>,
+ <STM32F746_PC12_FUNC_SDMMC1_CK>;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+
+ pins2 {
+ pinmux = <STM32F746_PD2_FUNC_SDMMC1_CMD>;
+ drive-open-drain;
+ slew-rate = <2>;
+ };
+ };
+
+ sdio_pins_b: sdio_pins_b@0 {
+ pins {
+ pinmux = <STM32F769_PG9_FUNC_SDMMC2_D0>,
+ <STM32F769_PG10_FUNC_SDMMC2_D1>,
+ <STM32F769_PB3_FUNC_SDMMC2_D2>,
+ <STM32F769_PB4_FUNC_SDMMC2_D3>,
+ <STM32F769_PD6_FUNC_SDMMC2_CLK>,
+ <STM32F769_PD7_FUNC_SDMMC2_CMD>;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+ };
+
+ sdio_pins_od_b: sdio_pins_od_b@0 {
+ pins1 {
+ pinmux = <STM32F769_PG9_FUNC_SDMMC2_D0>,
+ <STM32F769_PG10_FUNC_SDMMC2_D1>,
+ <STM32F769_PB3_FUNC_SDMMC2_D2>,
+ <STM32F769_PB4_FUNC_SDMMC2_D3>,
+ <STM32F769_PD6_FUNC_SDMMC2_CLK>;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+
+ pins2 {
+ pinmux = <STM32F769_PD7_FUNC_SDMMC2_CMD>;
+ drive-open-drain;
+ slew-rate = <2>;
+ };
+ };
+
+ };
+ sdio: sdio@40012c00 {
+ compatible = "st,stm32f4xx-sdio";
+ reg = <0x40012c00 0x400>;
+ clocks = <&rcc 0 171>;
+ interrupts = <49>;
+ status = "disabled";
+ pinctrl-0 = <&sdio_pins>;
+ pinctrl-1 = <&sdio_pins_od>;
+ pinctrl-names = "default", "opendrain";
+ max-frequency = <48000000>;
+ };
+
+ sdio2: sdio2@40011c00 {
+ compatible = "st,stm32f4xx-sdio";
+ reg = <0x40011c00 0x400>;
+ clocks = <&rcc 0 167>;
+ interrupts = <103>;
+ status = "disabled";
+ pinctrl-0 = <&sdio_pins_b>;
+ pinctrl-1 = <&sdio_pins_od_b>;
+ pinctrl-names = "default", "opendrain";
+ max-frequency = <48000000>;
};
};
};
diff --git a/arch/arm/dts/stm32f769-disco.dts b/arch/arm/dts/stm32f769-disco.dts
index f34ffcc..59c9d31 100644
--- a/arch/arm/dts/stm32f769-disco.dts
+++ b/arch/arm/dts/stm32f769-disco.dts
@@ -60,6 +60,7 @@
aliases {
serial0 = &usart1;
spi0 = &qspi;
+ mmc0 = &sdio2;
/* Aliases for gpios so as to use sequence */
gpio0 = &gpioa;
gpio1 = &gpiob;
@@ -252,3 +253,14 @@
reg = <0>;
};
};
+
+&sdio2 {
+ status = "okay";
+ cd-gpios = <&gpioi 15 0>;
+ cd-inverted;
+ pinctrl-names = "default", "opendrain";
+ pinctrl-0 = <&sdio_pins_b>;
+ pinctrl-1 = <&sdio_pins_od_b>;
+ bus-width = <4>;
+ max-frequency = <25000000>;
+};