From: Patrice Chotard patrice.chotard@st.com
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 | 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>; +};