From d8f69e563b0477dddeeedf89407d01d6df7e124e Mon Sep 17 00:00:00 2001 From: Patrice Chotard Date: Tue, 3 Oct 2017 15:54:57 +0200 Subject: [PATCH] ARM: DTS: stm32: add SDMMC support fo stm32h743-eval Add pinctrl and sdmmc nodes to add MMC support for STM32H743 evaluation board. Evaluation board needs a second pinctrl node "pinctrl_sdmmc1_level_shifter" to drive a level shifter on MMC bus. Signed-off-by: Patrice Chotard --- arch/arm/dts/stm32h743-pinctrl.dtsi | 11 +++++++++++ arch/arm/dts/stm32h743i-eval.dts | 9 +++++++++ 2 files changed, 20 insertions(+) diff --git a/arch/arm/dts/stm32h743-pinctrl.dtsi b/arch/arm/dts/stm32h743-pinctrl.dtsi index d6a79aefb4..e4f4aa579b 100644 --- a/arch/arm/dts/stm32h743-pinctrl.dtsi +++ b/arch/arm/dts/stm32h743-pinctrl.dtsi @@ -259,6 +259,17 @@ bias-disable; }; }; + + pinctrl_sdmmc1_level_shifter: sdmmc0_ls@0 { + pins { + pinmux = , + , + , + ; + drive-push-pull; + slew-rate = <3>; + }; + }; }; }; }; diff --git a/arch/arm/dts/stm32h743i-eval.dts b/arch/arm/dts/stm32h743i-eval.dts index 0e01ce51ab..28c876be27 100644 --- a/arch/arm/dts/stm32h743i-eval.dts +++ b/arch/arm/dts/stm32h743i-eval.dts @@ -98,3 +98,12 @@ st,sdram-refcount = <1539>; }; }; + +&sdmmc1 { + status = "okay"; + pinctrl-0 = <&sdmmc1_pins>, + <&pinctrl_sdmmc1_level_shifter>; + pinctrl-names = "default"; + bus-width = <4>; + st,dirpol; +}; -- 2.39.5