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>

diff --git a/arch/arm/dts/stm32h743-pinctrl.dtsi b/arch/arm/dts/stm32h743-pinctrl.dtsi
index d6a79aefb4ccb2403e8744134b1fd2fec8e98f46..e4f4aa579bd46ce808f6dcd76bff9247ece0dbf7 100644 (file)
--- 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 0e01ce51ab3338d1cd7de2798d7e6e6925999be7..28c876be27fc695da51644284f39589131073fd9 100644 (file)
--- 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;
+};