[PATCH 2/3] arm64: dts: st: add sdmmc2 pins on stm32mp25
From: Mateusz Nowicki
Date: Sat Sep 12 2026 - 16:45:29 EST
Add the 8-bit bus pin groups of SDMMC2 on port E, used by the eMMC
on the STM32MP257F-DK.
Signed-off-by: Mateusz Nowicki <mateusz.nowicki@xxxxxxxxxx>
---
arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi | 69 +++++++++++++++++++
1 file changed, 69 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
index 456ece7f8ebc..ad55791a72fc 100644
--- a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi
@@ -431,6 +431,75 @@ pins {
};
};
+ /omit-if-no-ref/
+ sdmmc2_b8_pins_a: sdmmc2-b8-0 {
+ pins1 {
+ pinmux = <STM32_PINMUX('E', 13, AF12)>, /* SDMMC2_D0 */
+ <STM32_PINMUX('E', 11, AF12)>, /* SDMMC2_D1 */
+ <STM32_PINMUX('E', 8, AF12)>, /* SDMMC2_D2 */
+ <STM32_PINMUX('E', 12, AF12)>, /* SDMMC2_D3 */
+ <STM32_PINMUX('E', 10, AF12)>, /* SDMMC2_D4 */
+ <STM32_PINMUX('E', 9, AF12)>, /* SDMMC2_D5 */
+ <STM32_PINMUX('E', 6, AF12)>, /* SDMMC2_D6 */
+ <STM32_PINMUX('E', 7, AF12)>, /* SDMMC2_D7 */
+ <STM32_PINMUX('E', 15, AF12)>; /* SDMMC2_CMD */
+ slew-rate = <2>;
+ drive-push-pull;
+ bias-disable;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('E', 14, AF12)>; /* SDMMC2_CK */
+ slew-rate = <3>;
+ drive-push-pull;
+ bias-disable;
+ };
+ };
+
+ /omit-if-no-ref/
+ sdmmc2_b8_od_pins_a: sdmmc2-b8-od-0 {
+ pins1 {
+ pinmux = <STM32_PINMUX('E', 13, AF12)>, /* SDMMC2_D0 */
+ <STM32_PINMUX('E', 11, AF12)>, /* SDMMC2_D1 */
+ <STM32_PINMUX('E', 8, AF12)>, /* SDMMC2_D2 */
+ <STM32_PINMUX('E', 12, AF12)>, /* SDMMC2_D3 */
+ <STM32_PINMUX('E', 10, AF12)>, /* SDMMC2_D4 */
+ <STM32_PINMUX('E', 9, AF12)>, /* SDMMC2_D5 */
+ <STM32_PINMUX('E', 6, AF12)>, /* SDMMC2_D6 */
+ <STM32_PINMUX('E', 7, AF12)>; /* SDMMC2_D7 */
+ slew-rate = <2>;
+ drive-push-pull;
+ bias-disable;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('E', 14, AF12)>; /* SDMMC2_CK */
+ slew-rate = <3>;
+ drive-push-pull;
+ bias-disable;
+ };
+ pins3 {
+ pinmux = <STM32_PINMUX('E', 15, AF12)>; /* SDMMC2_CMD */
+ slew-rate = <2>;
+ drive-open-drain;
+ bias-disable;
+ };
+ };
+
+ /omit-if-no-ref/
+ sdmmc2_b8_sleep_pins_a: sdmmc2-b8-sleep-0 {
+ pins {
+ pinmux = <STM32_PINMUX('E', 13, ANALOG)>, /* SDMMC2_D0 */
+ <STM32_PINMUX('E', 11, ANALOG)>, /* SDMMC2_D1 */
+ <STM32_PINMUX('E', 8, ANALOG)>, /* SDMMC2_D2 */
+ <STM32_PINMUX('E', 12, ANALOG)>, /* SDMMC2_D3 */
+ <STM32_PINMUX('E', 10, ANALOG)>, /* SDMMC2_D4 */
+ <STM32_PINMUX('E', 9, ANALOG)>, /* SDMMC2_D5 */
+ <STM32_PINMUX('E', 6, ANALOG)>, /* SDMMC2_D6 */
+ <STM32_PINMUX('E', 7, ANALOG)>, /* SDMMC2_D7 */
+ <STM32_PINMUX('E', 15, ANALOG)>, /* SDMMC2_CMD */
+ <STM32_PINMUX('E', 14, ANALOG)>; /* SDMMC2_CK */
+ };
+ };
+
/omit-if-no-ref/
spi3_pins_a: spi3-0 {
pins1 {
--
2.55.0