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ARM: DTS: stm32: add SDMMC support fo stm32h743-eval

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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 <patrice.chotard@st.com>
This commit is contained in:
Patrice Chotard 2017-10-03 15:54:57 +02:00 committed by Tom Rini
parent eccac3e120
commit d8f69e563b
2 changed files with 20 additions and 0 deletions
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11
arch/arm/dts/stm32h743-pinctrl.dtsi
View file

@ -259,6 +259,17 @@
bias-disable;
};
};
pinctrl_sdmmc1_level_shifter: sdmmc0_ls@0 {
pins {
pinmux = <STM32H7_PB8_FUNC_SDMMC1_CKIN>,
<STM32H7_PB9_FUNC_SDMMC1_CDIR>,
<STM32H7_PC6_FUNC_SDMMC1_D0DIR>,
<STM32H7_PC7_FUNC_SDMMC1_D123DIR>;
drive-push-pull;
slew-rate = <3>;
};
};
};
};
};

9
arch/arm/dts/stm32h743i-eval.dts
View file

@ -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;
};