// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
 * Copyright (C) 2019-2023, STMicroelectronics - All Rights Reserved
 * Author: DCM Board Support - TF-A simplified version
 */
/dts-v1/;
#include "stm32mp157.dtsi"
#include "stm32mp15xc.dtsi"
#include "stm32mp15-pinctrl.dtsi"
#include "stm32mp15xxac-pinctrl.dtsi"

/ {
	model = "STM32MP157C DCM Board";
	compatible = "st,stm32mp157c-dcm", "st,stm32mp157";
	
	memory@c0000000 {
		device_type = "memory";
		reg = <0xc0000000 0x40000000>; /* 1GB */
	};
	
	aliases {
		mmc0 = &sdmmc1;  /* SD-Karte */
		mmc1 = &sdmmc2;  /* eMMC */
		serial0 = &usart2; /* Console */
	};
	
	chosen {
		stdout-path = "serial0:115200n8";
	};
	
	/* Clock configuration - vereinfacht für TF-A */
	clocks {
		clk_hse: clk-hse {
			clock-frequency = <24000000>;
		};
		clk_lse: clk-lse {
			clock-frequency = <32768>;
		};
	};

	/* Override ARM PMU to fix cpu1 reference for BL2 */
	arm-pmu {
		compatible = "arm,cortex-a7-pmu";
		interrupts = <0 200 4>;
		interrupt-affinity = <&cpu0>;
		interrupt-parent = <&intc>;
	};
};

&pinctrl {
    /* SDMMC1 sd-card */
    sdmmc1_pins_mx: sdmmc1_mx-0 {
        pins1 {
            pinmux = <STM32_PINMUX('C',  8, AF12)>, /* SDMMC1_D0 */
                     <STM32_PINMUX('C',  9, AF12)>, /* SDMMC1_D1 */
                     <STM32_PINMUX('E',  6, AF8 )>, /* SDMMC1_D2 */
                     <STM32_PINMUX('C', 11, AF12)>, /* SDMMC1_D3 */
                     <STM32_PINMUX('D',  2, AF12)>; /* SDMMC1_CMD */
            bias-disable;
            drive-push-pull;
            slew-rate = <1>;
        };
        pins2 {
            pinmux = <STM32_PINMUX('C', 12, AF12)>; /* SDMMC1_CK */
            bias-disable;
            drive-push-pull;
            slew-rate = <3>;
        };
    };

    sdmmc1_opendrain_pins_mx: sdmmc1_opendrain_mx-0 {
        pins1 {
            pinmux = <STM32_PINMUX('C',  8, AF12)>, /* SDMMC1_D0 */
                     <STM32_PINMUX('C',  9, AF12)>, /* SDMMC1_D1 */
                     <STM32_PINMUX('E',  6, AF8 )>, /* SDMMC1_D2 */
                     <STM32_PINMUX('C', 11, AF12)>; /* SDMMC1_D3 */
            bias-disable;
            drive-push-pull;
            slew-rate = <1>;
        };
        pins2 {
            pinmux = <STM32_PINMUX('C', 12, AF12)>; /* SDMMC1_CK */
            bias-disable;
            drive-push-pull;
            slew-rate = <3>;
        };
        pins3 {
            pinmux = <STM32_PINMUX('D',  2, AF12)>; /* SDMMC1_CMD */
            bias-disable;
            drive-open-drain;
            slew-rate = <1>;
        };
    };

    sdmmc1_cd_pins: sdmmc1_cd_pins-0 {
        pins {
            u-boot,dm-pre-reloc;
            pinmux = <STM32_PINMUX('F', 2, GPIO)>;  /* SD_DETECT */
            bias-pull-up;
        };
    };
    
    /* SDMMC2 eMMC */
    sdmmc2_pins_mx: sdmmc2_mx-0 {
        pins1 {
            pinmux = <STM32_PINMUX('B', 14, AF9 )>, /* SDMMC2_D0 */
                     <STM32_PINMUX('B', 15, AF9 )>, /* SDMMC2_D1 */
                     <STM32_PINMUX('B',  3, AF9 )>, /* SDMMC2_D2 */
                     <STM32_PINMUX('B',  4, AF9 )>, /* SDMMC2_D3 */
                     <STM32_PINMUX('A',  8, AF9 )>, /* SDMMC2_D4 */
                     <STM32_PINMUX('A',  9, AF10)>, /* SDMMC2_D5 */
                     <STM32_PINMUX('C',  6, AF10)>, /* SDMMC2_D6 */
                     <STM32_PINMUX('D',  3, AF9 )>, /* SDMMC2_D7 */
                     <STM32_PINMUX('G',  6, AF10)>; /* SDMMC2_CMD */
            bias-pull-up;
            drive-push-pull;
            slew-rate = <1>;
        };
        pins2 {
            pinmux = <STM32_PINMUX('E',  3, AF9 )>; /* SDMMC2_CK */
            bias-pull-up;
            drive-push-pull;
            slew-rate = <3>;
        };
    };

    sdmmc2_opendrain_pins_mx: sdmmc2_opendrain_mx-0 {
        pins1 {
            pinmux = <STM32_PINMUX('B', 14, AF9 )>, /* SDMMC2_D0 */
                     <STM32_PINMUX('B', 15, AF9 )>, /* SDMMC2_D1 */
                     <STM32_PINMUX('B',  3, AF9 )>, /* SDMMC2_D2 */
                     <STM32_PINMUX('B',  4, AF9 )>, /* SDMMC2_D3 */
                     <STM32_PINMUX('A',  8, AF9 )>, /* SDMMC2_D4 */
                     <STM32_PINMUX('A',  9, AF10)>, /* SDMMC2_D5 */
                     <STM32_PINMUX('C',  6, AF10)>, /* SDMMC2_D6 */
                     <STM32_PINMUX('D',  3, AF9 )>; /* SDMMC2_D7 */
            bias-pull-up;
            drive-push-pull;
            slew-rate = <1>;
        };
        pins2 {
            pinmux = <STM32_PINMUX('E',  3, AF9 )>; /* SDMMC2_CK */
            bias-pull-up;
            drive-push-pull;
            slew-rate = <3>;
        };
        pins3 {
            pinmux = <STM32_PINMUX('G',  6, AF10)>; /* SDMMC2_CMD */
            bias-pull-up;
            drive-open-drain;
            slew-rate = <1>;
        };
    };

    usart2_pins_mx: usart2_mx-0 {
        pins1 {
            pinmux = <STM32_PINMUX('F', 5, AF7)>; /* USART2_TX */
            bias-disable;
            drive-push-pull;
            slew-rate = <0>;
        };
        pins2 {
            pinmux = <STM32_PINMUX('F', 4, AF7)>; /* USART2_RX */
            bias-disable;
        };
    };

};

&pinctrl_z {
    i2c4_pins_z_mx: i2c4_mx-0 {
        u-boot,dm-pre-reloc;
        pins {
            u-boot,dm-pre-reloc;
            pinmux = <STM32_PINMUX('Z', 4, AF6)>, /* I2C4_SCL */
                     <STM32_PINMUX('Z', 5, AF6)>; /* I2C4_SDA */
            bias-disable;
            drive-open-drain;
            slew-rate = <0>;
        };
    };
};

/* Console UART */
&usart2 {
	status = "okay";
};

/* SD-Karte für Boot */
&sdmmc1 {
	status = "okay";
	st,neg-edge;
	bus-width = <4>;
};

/* eMMC für Boot */
&sdmmc2 {
	status = "okay";
	non-removable;
	no-sd;
	no-sdio;
	st,neg-edge;
	bus-width = <8>;
};

/* USB Controllers - fix usbphyc references */
&usbh_ohci {
	clocks = <&rcc 111>;
	resets = <&rcc 3288>;
	status = "disabled";
};

&usbh_ehci {
	clocks = <&rcc 111>;
	resets = <&rcc 3288>;
	status = "disabled";
};

&usbotg_hs {
	clocks = <&rcc 166>;
	clock-names = "otg";
	resets = <&rcc 19656>;
	reset-names = "dwc2";
	status = "disabled";
};

/* I2C4 für PMIC - minimal für TF-A */
&i2c4 {
	status = "okay";
	
	pmic: stpmic@33 {
		compatible = "st,stpmic1";
		reg = <0x33>;
		status = "okay";
		
		regulators {
			compatible = "st,stpmic1-regulators";
			
			vddcore: buck1 {
				regulator-name = "vddcore";
				regulator-min-microvolt = <1200000>;
				regulator-max-microvolt = <1350000>;
				regulator-always-on;
			};
			
			vdd_ddr: buck2 {
				regulator-name = "vdd_ddr";
				regulator-min-microvolt = <1350000>;
				regulator-max-microvolt = <1350000>;
				regulator-always-on;
			};
			
			v3v3: buck4 {
				regulator-name = "v3v3";
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-always-on;
			};
		};
	};
};

/* RNG für TF-A Entropy */
&rng1 {
	status = "okay";
};

/* Crypto für Secure Boot */
&cryp1 {
	status = "okay";
};

&hash1 {
	status = "okay";
};

/* CPU Voltage Supply */
&cpu0 {
	cpu-supply = <&vddcore>;
};

&cpu1 {
	cpu-supply = <&vddcore>;
};