arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi
Extension
.dtsi
Size
5370 bytes
Lines
225
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/*
 * Device Tree Source for R9A08G046L48 SMARC SoM board.
 *
 * Copyright (C) 2026 Renesas Electronics Corp.
 */

/*
 * Please set the below switch position on the SoM and the corresponding macro
 * on the board DTS:
 *
 * Switch position SYS.2, Macro SW_I3C_EN:
 *      0 - SMARC_I2C_GP is enabled
 *      1 - I3C is enabled
 *
 * Switch position SYS.4, Macro SW_SD2_EN:
 *      0 - Select I2S0
 *      1 - Select SD2
 *
 * Switch position SYS.5, Macro SW_DPI_EN:
 *      0 - Select multiple SMARC signals active
 *      1 - Select LCD
 *
 * Switch position BOOT.1, Macro RZ_BOOT_MODE3:
 *      0 - Select JTAG enabled
 *      1 - Select SDIO {CD,IOVS,PWEN} and GPIO4 Active
 *
 * Switch position SW_GPIO4, Macro SW_GPIO4:
 *      0 - Select RZ_VBAT_TAMPER (position 2-1)
 *      1 - Select GPIO4 (position 2-3)
 */

/ {
	compatible = "renesas,rzg3l-smarcm", "renesas,r9a08g046l48", "renesas,r9a08g046";

	aliases {
		ethernet0 = &eth0;
		ethernet1 = &eth1;
		i2c0 = &i2c0;
	};

	memory@48000000 {
		device_type = "memory";
		/* First 128MiB is reserved for secure area. */
		reg = <0x0 0x48000000 0x0 0x78000000>;
	};

	reg_1p8v: regulator-1p8v {
		compatible = "regulator-fixed";
		regulator-name = "fixed-1.8V";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		regulator-boot-on;
		regulator-always-on;
	};

	reg_3p3v: regulator-3p3v {
		compatible = "regulator-fixed";
		regulator-name = "fixed-3.3V";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-boot-on;
		regulator-always-on;
	};

	x2_clk: x2-clock {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <24000000>;
	};

Annotation

Implementation Notes