fdts/stm32mp257d-ultra-fly-sbc.dts

// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
/*
 * Copyright (C) 2025, Ultratronik GmbH
 * Copyright (C) STMicroelectronics 2025 - All Rights Reserved
 * Author: Boerge Struempfel <boerge.struempfel@gmail.com> for Ultratronik GmbH.
 */

/dts-v1/;

#include <dt-bindings/clock/stm32mp25-clksrc.h>
#include "stm32mp257.dtsi"
#include "stm32mp257d-ultra-fly-sbc-ca35tdcid-rcc.dtsi"
#include "stm32mp25-lpddr4-2x16Gbits-32bits-1200MHz.dtsi"
#include "stm32mp25-pinctrl.dtsi"
#include "stm32mp25xxak-pinctrl.dtsi"

/ {
	model = "Ultratronik Ultra Fly SBC based on STM32MP257D";
	compatible = "st,stm32mp257d-ultra-fly-sbc", "st,stm32mp257";

	aliases {
		serial0 = &usart1;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	memory@80000000 {
		device_type = "memory";
		reg = <0x0 0x80000000 0x1 0x00000000>;
	};
};

&ddr {
	vdd1-supply = <&vdd1_ddr>;
	vdd2-supply = <&vdd2_ddr>;
	vddq-supply = <&vdd2_ddr>;
};

&i2c7 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c7_pins_a>;
	i2c-scl-rising-time-ns = <185>;
	i2c-scl-falling-time-ns = <20>;
	clock-frequency = <400000>;
	status = "okay";
	#address-cells = <1>;
	#size-cells = <0>;

	pmic2: stpmic@33 {
		compatible = "st,stpmic2";
		reg = <0x33>;
		status = "okay";

		regulators {
			compatible = "st,stpmic2-regulators";

			vddcpu: buck1 {
				regulator-name = "vddcpu";
				regulator-min-microvolt = <800000>;
				regulator-max-microvolt = <910000>;
				regulator-always-on;
			};
			vddcore: buck2 {
				regulator-name = "vddcore";
				regulator-min-microvolt = <820000>;
				regulator-max-microvolt = <820000>;
				regulator-always-on;
			};
			vddgpu: buck3 {
				regulator-name = "vddgpu";
				regulator-min-microvolt = <800000>;
				regulator-max-microvolt = <900000>;
				regulator-always-on;
			};
			vddio_pmic: buck4 {
				regulator-name = "vddio_pmic";
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-always-on;
			};
			v1v8: buck5 {
				regulator-name = "v1v8";
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-always-on;
			};
			vdd2_ddr: buck6 {
				regulator-name = "vdd2_ddr";
				regulator-min-microvolt = <1100000>;
				regulator-max-microvolt = <1100000>;
			};
			v3v3: buck7 {
				regulator-name = "v3v3";
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-always-on;
			};
			vdda1v8_aon: ldo1 {
				regulator-name = "vdda1v8_aon";
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-always-on;
			};
			vdd_emmc: ldo2 {
				regulator-name = "vdd_emmc";
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-always-on;
			};
			vdd1_ddr: ldo3 {
				regulator-name = "vdd1_ddr";
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-enable-ramp-delay = <1000>;
			};
			vdd3v3_usb: ldo4 {
				regulator-name = "vdd3v3_usb";
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-always-on;
			};
			vdd_sdcard: ldo7 {
				regulator-name = "vdd_sdcard";
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-always-on;
			};
			vddio_sdcard: ldo8 {
				regulator-name = "vddio_sdcard";
				st,regulator-bypass-microvolt = <3300000>;
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <3300000>;
				regulator-always-on;
			};
		};
	};
};

&pwr {
	vddio1: vddio1 {
		vddio1-supply = <&vddio_sdcard>;
	};
	vddio2: vddio2 {
		vddio2-supply = <&v1v8>;
	};
	vddio3: vddio3 {
		vddio3-supply = <&vddio_pmic>;
	};
	vddio4: vddio4 {
		vddio4-supply = <&vddio_pmic>;
	};
	vddio: vddio {
		vdd-supply = <&vddio_pmic>;
	};
};

&sdmmc1 {
	pinctrl-names = "default";
	pinctrl-0 = <&sdmmc1_b4_pins_a>;
	st,neg-edge;
	bus-width = <4>;
	vmmc-supply = <&vdd_sdcard>;
	vqmmc-supply = <&vddio1>;
	status = "okay";
};

&sdmmc2 {
	pinctrl-names = "default";
	pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_a>;
	non-removable;
	no-sd;
	no-sdio;
	st,neg-edge;
	bus-width = <8>;
	vmmc-supply = <&vdd_emmc>;
	vqmmc-supply = <&vddio2>;
	status = "okay";
};

&usart1 {
	pinctrl-names = "default";
	pinctrl-0 = <&usart1_pins_a>;
	status = "okay";
};

&pinctrl {
	usart1_pins_a: usart1-0 {
		pins1 {
			pinmux = <STM32_PINMUX('A', 3, AF6)>; /* USART1_TX */
			bias-disable;
			drive-push-pull;
			slew-rate = <0>;
		};
		pins2 {
			pinmux = <STM32_PINMUX('G', 15, AF6)>; /* USART1_RX */
			bias-disable;
		};
	};
};