From: Patrice Chotard <patrice.chot...@st.com>
Add pinctrl and sdmmc nodes to add MMC support for
STM32H743 discovery board.
Signed-off-by: Patrice Chotard <patrice.chot...@st.com>
---
arch/arm/dts/stm32h743-pinctrl.dtsi | 15 +++++++++++++++
arch/arm/dts/stm32h743.dtsi | 13 +++++++++++++
arch/arm/dts/stm32h743i-disco.dts | 9 +++++++++
3 files changed, 37 insertions(+)
diff --git a/arch/arm/dts/stm32h743-pinctrl.dtsi
b/arch/arm/dts/stm32h743-pinctrl.dtsi
index d3e11d5..d6a79ae 100644
--- a/arch/arm/dts/stm32h743-pinctrl.dtsi
+++ b/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;
+ };
+ };
};
};
};
diff --git a/arch/arm/dts/stm32h743.dtsi b/arch/arm/dts/stm32h743.dtsi
index 16e9308..f6965f8 100644
--- a/arch/arm/dts/stm32h743.dtsi
+++ b/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";
+ };
};
};
diff --git a/arch/arm/dts/stm32h743i-disco.dts
b/arch/arm/dts/stm32h743i-disco.dts
index bef7e90..917a859 100644
--- a/arch/arm/dts/stm32h743i-disco.dts
+++ b/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>;
+};
--
1.9.1
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