arm64: dts: st: add stm32mp257f-dk board support

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@foss.st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20250225-b4-stm32mp2_new_dts-v2-2-1a628c1580c7@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/arch/arm64/boot/dts/st/Makefile b/arch/arm64/boot/dts/st/Makefile
index 881fe1296c581621f1219dbfbb4b1e03179e0f6f..0cc12f2b1dfeea6510793ea26f599f767df77749 100644 (file)
--- 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 (file)
index 0000000..a278a1e
--- /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@foss.st.com> 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";
+};