From d8f69e563b0477dddeeedf89407d01d6df7e124e Mon Sep 17 00:00:00 2001
From: Patrice Chotard <patrice.chotard@st.com>
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 <patrice.chotard@st.com>
---
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 = <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>;
+ };
+ };
};
};
};
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