fdts/stm32mp151a-prtt1a.dts

// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
 * Copyright (C) 2023, Protonic Holland - All Rights Reserved
 * Author: David Jander <david@protonic.nl>
 */
/dts-v1/;

#include "stm32mp151.dtsi"
#include "stm32mp15-pinctrl.dtsi"
#include "stm32mp15xxad-pinctrl.dtsi"
#include <dt-bindings/clock/stm32mp1-clksrc.h>
#include "stm32mp15-ddr3-1x2Gb-1066-binG.dtsi"

/ {
	model = "Protonic PRTT1A";
	compatible = "prt,prtt1a", "st,stm32mp151";

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

	aliases {
		mmc0 = &sdmmc1;
		mmc1 = &sdmmc2;
		serial0 = &uart4;
	};

	memory@c0000000 {
		device_type = "memory";
		reg = <0xC0000000 0x10000000>;
	};
};

&iwdg2 {
	timeout-sec = <32>;
	status = "okay";
	secure-status = "okay";
};

&qspi {
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&qspi_clk_pins_a &qspi_bk1_pins_a>;
	reg = <0x58003000 0x1000>, <0x70000000 0x4000000>;
	#address-cells = <1>;
	#size-cells = <0>;
	status = "okay";

	flash@0 {
		compatible = "spi-nand";
		reg = <0>;
		spi-rx-bus-width = <4>;
		spi-max-frequency = <104000000>;
		#address-cells = <1>;
		#size-cells = <1>;
	};
};

&qspi_bk1_pins_a {
	pins1 {
		bias-pull-up;
		drive-push-pull;
		slew-rate = <1>;
	};
};

&rcc {
	st,clksrc = <
		CLK_MPU_PLL1P
		CLK_AXI_PLL2P
		CLK_MCU_PLL3P
		CLK_PLL12_HSE
		CLK_PLL3_HSE
		CLK_PLL4_HSE
		CLK_RTC_LSI
		CLK_MCO1_DISABLED
		CLK_MCO2_DISABLED
	>;

	st,clkdiv = <
		1 /*MPU*/
		0 /*AXI*/
		0 /*MCU*/
		1 /*APB1*/
		1 /*APB2*/
		1 /*APB3*/
		1 /*APB4*/
		2 /*APB5*/
		23 /*RTC*/
		0 /*MCO1*/
		0 /*MCO2*/
	>;

	st,pkcs = <
		CLK_CKPER_HSE
		CLK_FMC_ACLK
		CLK_QSPI_ACLK
		CLK_ETH_DISABLED
		CLK_SDMMC12_PLL4P
		CLK_DSI_DSIPLL
		CLK_STGEN_HSE
		CLK_USBPHY_HSE
		CLK_SPI2S1_PLL3Q
		CLK_SPI2S23_PLL3Q
		CLK_SPI45_HSI
		CLK_SPI6_HSI
		CLK_I2C46_HSI
		CLK_SDMMC3_PLL4P
		CLK_USBO_USBPHY
		CLK_ADC_CKPER
		CLK_CEC_LSI
		CLK_I2C12_HSI
		CLK_I2C35_HSI
		CLK_UART1_HSI
		CLK_UART24_HSI
		CLK_UART35_HSI
		CLK_UART6_HSI
		CLK_UART78_HSI
		CLK_SPDIF_PLL4P
		CLK_FDCAN_PLL4R
		CLK_SAI1_PLL3Q
		CLK_SAI2_PLL3Q
		CLK_SAI3_PLL3Q
		CLK_SAI4_PLL3Q
		CLK_RNG1_LSI
		CLK_RNG2_LSI
		CLK_LPTIM1_PCLK1
		CLK_LPTIM23_PCLK3
		CLK_LPTIM45_LSI
	>;

	/* VCO = 1300.0 MHz => P = 650 (CPU) */
	pll1: st,pll@0 {
		compatible = "st,stm32mp1-pll";
		reg = <0>;
		cfg = <2 80 0 0 0 PQR(1,0,0)>;
		frac = <0x800>;
	};

	/* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU), R = 533 (DDR) */
	pll2: st,pll@1 {
		compatible = "st,stm32mp1-pll";
		reg = <1>;
		cfg = <2 65 1 0 0 PQR(1,1,1)>;
		frac = <0x1400>;
	};

	/* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */
	pll3: st,pll@2 {
		compatible = "st,stm32mp1-pll";
		reg = <2>;
		cfg = <1 33 1 16 36 PQR(1,1,1)>;
		frac = <0x1a04>;
	};

	/* VCO = 480.0 MHz => P = 120, Q = 40, R = 96 */
	pll4: st,pll@3 {
		compatible = "st,stm32mp1-pll";
		reg = <3>;
		cfg = <1 39 3 11 4 PQR(1,1,1)>;
	};
};

&rng1 {
	status = "okay";
};

&rtc {
	status = "okay";
};

&sdmmc1 {
	pinctrl-names = "default";
	pinctrl-0 = <&sdmmc1_b4_pins_a>;
	bus-width = <4>;
	status = "okay";
};

&sdmmc1_b4_pins_a {
	pins1 {
		bias-pull-up;
	};
	pins2 {
		bias-pull-up;
	};
};

/* NOTE: Although the PRTT1A does not have an eMMC, we declare it
 * anyway, in order to be able to use the same binary for the
 * PRTT1C also. All involved pins are N.C. on PRTT1A/S for that
 * reason, so it should do no harm. All inputs configured with
 * pull-ups to avoid floating inputs. */
&sdmmc2 {
	pinctrl-names = "default";
	pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_a>;
	bus-width = <8>;
	status = "okay";
};

&sdmmc2_b4_pins_a {
	pins1 {
		pinmux = <STM32_PINMUX('B', 14, AF9)>, /* SDMMC2_D0 */
			 <STM32_PINMUX('B', 7, AF10)>, /* SDMMC2_D1 */
			 <STM32_PINMUX('B', 3, AF9)>, /* SDMMC2_D2 */
			 <STM32_PINMUX('B', 4, AF9)>, /* SDMMC2_D3 */
			 <STM32_PINMUX('G', 6, AF10)>; /* SDMMC2_CMD */
	};
};

&sdmmc2_d47_pins_a {
	pins {
		pinmux = <STM32_PINMUX('A', 8, AF9)>, /* SDMMC2_D4 */
			 <STM32_PINMUX('A', 9, AF10)>, /* SDMMC2_D5 */
			 <STM32_PINMUX('C', 6, AF10)>, /* SDMMC2_D6 */
			 <STM32_PINMUX('C', 7, AF10)>; /* SDMMC2_D7 */
	};
};

&uart4 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart4_pins_a>;
	status = "okay";
};

&uart4_pins_a {
	pins1 {
		pinmux = <STM32_PINMUX('B', 9, AF8)>; /* UART4_TX */
		bias-disable;
		drive-push-pull;
		slew-rate = <0>;
	};
	pins2 {
		pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
		bias-pull-up;
	};
};