Add the configuration node for SD-card support on STM32MP257F-EV1 board.
For the moment it uses a fixed regulator for vmmc, and vqmmc is skipped
until regulator driver is available.
Signed-off-by: Yann Gautier <yann.gautier@xxxxxxxxxxx>
---
arch/arm64/boot/dts/st/stm32mp257f-ev1.dts | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
index 39b4726cc0986..6c3b83c2b48fa 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
@@ -6,6 +6,7 @@
/dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
#include "stm32mp257.dtsi"
#include "stm32mp25xf.dtsi"
#include "stm32mp25-pinctrl.dtsi"
@@ -39,6 +40,27 @@ fw@80000000 {
no-map;
};
};
+
+ vdd_sdcard: vdd-sdcard {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd_sdcard";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+};
+
+&sdmmc1 {
+ pinctrl-names = "default", "opendrain", "sleep";
+ pinctrl-0 = <&sdmmc1_b4_pins_a>;
+ pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
+ pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
+ cd-gpios = <&gpiod 9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ disable-wp;
+ st,neg-edge;
+ bus-width = <4>;
+ vmmc-supply = <&vdd_sdcard>;
+ status = "okay";
};
&usart2 {
--
2.34.1
