src/arm64/renesas/rzg3s-smarc-som.dtsi

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/*
 * Device Tree Source for the R9A08G045S33 SMARC Carrier-II's SoM board.
 *
 * Copyright (C) 2023 Renesas Electronics Corp.
 */

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>

/*
 * Signals of SW_CONFIG switches:
 * @SW_SD0_DEV_SEL:
 *	0 - SD0 is connected to eMMC
 *	1 - SD0 is connected to uSD0 card
 */
#define SW_SD0_DEV_SEL	1

/ {
	compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";

	aliases {
		mmc0 = &sdhi0;
	};

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

	memory@48000000 {
		device_type = "memory";
		/* First 128MB is reserved for secure area. */
		reg = <0x0 0x48000000 0x0 0x38000000>;
	};

	vcc_sdhi0: regulator0 {
		compatible = "regulator-fixed";
		regulator-name = "SDHI0 Vcc";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		gpios = <&pinctrl RZG2L_GPIO(2, 1) GPIO_ACTIVE_HIGH>;
		enable-active-high;
	};

#if SW_SD0_DEV_SEL
	vccq_sdhi0: regulator1 {
		compatible = "regulator-gpio";
		regulator-name = "SDHI0 VccQ";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;
		gpios = <&pinctrl RZG2L_GPIO(2, 2) GPIO_ACTIVE_HIGH>;
		gpios-states = <1>;
		states = <3300000 1>, <1800000 0>;
	};
#else
	reg_1p8v: regulator1 {
		compatible = "regulator-fixed";
		regulator-name = "fixed-1.8V";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		regulator-boot-on;
		regulator-always-on;
	};
#endif
};

&extal_clk {
	clock-frequency = <24000000>;
};

#if SW_SD0_DEV_SEL
/* SD0 slot */
&sdhi0 {
	pinctrl-0 = <&sdhi0_pins>;
	pinctrl-1 = <&sdhi0_uhs_pins>;
	pinctrl-names = "default", "state_uhs";
	vmmc-supply = <&vcc_sdhi0>;
	vqmmc-supply = <&vccq_sdhi0>;
	bus-width = <4>;
	sd-uhs-sdr50;
	sd-uhs-sdr104;
	max-frequency = <125000000>;
	status = "okay";
};
#else
/* eMMC */
&sdhi0 {
	pinctrl-0 = <&sdhi0_emmc_pins>;
	pinctrl-1 = <&sdhi0_emmc_pins>;
	pinctrl-names = "default", "state_uhs";
	vmmc-supply = <&vcc_sdhi0>;
	vqmmc-supply = <&reg_1p8v>;
	bus-width = <8>;
	mmc-hs200-1_8v;
	non-removable;
	fixed-emmc-driver-type = <1>;
	max-frequency = <125000000>;
	status = "okay";
};
#endif

&pinctrl {
	sdhi0_pins: sd0 {
		data {
			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";
			power-source = <3300>;
		};

		ctrl {
			pins = "SD0_CLK", "SD0_CMD";
			power-source = <3300>;
		};

		cd {
			pinmux = <RZG2L_PORT_PINMUX(0, 0, 1)>; /* SD0_CD */
		};
	};

	sdhi0_uhs_pins: sd0-uhs {
		data {
			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";
			power-source = <1800>;
		};

		ctrl {
			pins = "SD0_CLK", "SD0_CMD";
			power-source = <1800>;
		};

		cd {
			pinmux = <RZG2L_PORT_PINMUX(0, 0, 1)>; /* SD0_CD */
		};
	};

	sdhi0_emmc_pins: sd0-emmc {
		pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3",
		       "SD0_DATA4", "SD0_DATA5", "SD0_DATA6", "SD0_DATA7",
		       "SD0_CLK", "SD0_CMD", "SD0_RST#";
		power-source = <1800>;
	};
};