From: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
Add STM32MP257F Discovery board support. It embeds a STM32MP257FAL SoC,
with 4GB of LPDDR4, 2*USB typeA, 1*USB3 typeC, 1*ETH, wifi/BT combo,
DSI HDMI, LVDS connector ...
Signed-off-by: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
Signed-off-by: Amelie Delaunay <amelie.delaunay@xxxxxxxxxxx>
---
Changes in v2:
- 'status' property removed from button nodes
---
arch/arm64/boot/dts/st/Makefile | 4 +-
arch/arm64/boot/dts/st/stm32mp257f-dk.dts | 113 ++++++++++++++++++++++++++++++
2 files changed, 116 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/st/Makefile b/arch/arm64/boot/dts/st/Makefile
index 881fe1296c581621f1219dbfbb4b1e03179e0f6f..0cc12f2b1dfeea6510793ea26f599f767df77749 100644
--- a/arch/arm64/boot/dts/st/Makefile
+++ b/arch/arm64/boot/dts/st/Makefile
@@ -1,2 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
-dtb-$(CONFIG_ARCH_STM32) += stm32mp257f-ev1.dtb
+dtb-$(CONFIG_ARCH_STM32) += \
+ stm32mp257f-dk.dtb \
+ stm32mp257f-ev1.dtb
diff --git a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
new file mode 100644
index 0000000000000000000000000000000000000000..a278a1e3ce03aa379d40ef807d268bbf31a04546
--- /dev/null
+++ b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2025 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx> for STMicroelectronics.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+#include "stm32mp257.dtsi"
+#include "stm32mp25xf.dtsi"
+#include "stm32mp25-pinctrl.dtsi"
+#include "stm32mp25xxak-pinctrl.dtsi"
+
+/ {
+ model = "STMicroelectronics STM32MP257F-DK Discovery Board";
+ compatible = "st,stm32mp257f-dk", "st,stm32mp257";
+
+ aliases {
+ serial0 = &usart2;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ button-user-1 {
+ label = "User-1";
+ linux,code = <BTN_1>;
+ gpios = <&gpioc 5 GPIO_ACTIVE_HIGH>;
+ };
+
+ button-user-2 {
+ label = "User-2";
+ linux,code = <BTN_2>;
+ gpios = <&gpioc 11 GPIO_ACTIVE_HIGH>;
+ };
+ };
+
+ gpio-leds {
+ compatible = "gpio-leds";
+
+ led-blue {
+ function = LED_FUNCTION_HEARTBEAT;
+ color = <LED_COLOR_ID_BLUE>;
+ gpios = <&gpioh 7 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
+ default-state = "off";
+ };
+ };
+
+ memory@80000000 {
+ device_type = "memory";
+ reg = <0x0 0x80000000 0x1 0x0>;
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ fw@80000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x0 0x80000000 0x0 0x4000000>;
+ no-map;
+ };
+ };
+};
+
+&arm_wdt {
+ timeout-sec = <32>;
+ status = "okay";
+};
+
+&scmi_regu {
+ scmi_vddio1: regulator@0 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ scmi_vdd_sdcard: regulator@23 {
+ reg = <VOLTD_SCMI_STPMIC2_LDO7>;
+ regulator-name = "vdd_sdcard";
+ };
+};
+
+&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 3 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ disable-wp;
+ st,neg-edge;
+ bus-width = <4>;
+ vmmc-supply = <&scmi_vdd_sdcard>;
+ vqmmc-supply = <&scmi_vddio1>;
+ status = "okay";
+};
+
+&usart2 {
+ pinctrl-names = "default", "idle", "sleep";
+ pinctrl-0 = <&usart2_pins_a>;
+ pinctrl-1 = <&usart2_idle_pins_a>;
+ pinctrl-2 = <&usart2_sleep_pins_a>;
+ /delete-property/dmas;
+ /delete-property/dma-names;
+ status = "okay";
+};
--
2.25.1
