arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
Extension
.dtsi
Size
2478 bytes
Lines
114
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 the RZ SMARC Carrier-II Board.
 *
 * Copyright (C) 2024 Renesas Electronics Corp.
 */

/*
 * Please set the switch position SW_OPT_MUX.1 on the carrier board and the
 * corresponding macro SW_SDIO_M2E on the board DTS:
 *
 * SW_SDIO_M2E:
 *     0 - SMARC SDIO signal is connected to uSD1
 *     1 - SMARC SDIO signal is connected to M.2 Key E connector
 *
 * Please set the switch position SW_OPT_MUX.4 on the carrier board and the
 * corresponding macro SW_SER0_PMOD on the board DTS:
 *
 * SW_SER0_PMOD:
 *     0 - SER0 signals connect to M.2 Key-E, SER2 signals are unconnected
 *     1 - SER0 signals connect to PMOD, SER2 signals connect to M.2 Key-E
 *
 * Please set the switch position SW_GPIO_CAN_PMOD on the carrier board and the
 * corresponding macro SW_GPIO8_CAN0_STB/SW_GPIO8_CAN0_STB on the board DTS:
 *
 * SW_GPIO8_CAN0_STB:
 *	0 - Connect to GPIO8 PMOD (default)
 *	1 - Connect to CAN0 transceiver STB pin
 *
 * SW_GPIO9_CAN1_STB:
 *	0 - Connect to GPIO9 PMOD (default)
 *	1 - Connect to CAN1 transceiver STB pin
 *
 * GPIO keys are enabled by default. Use PMOD_GPIO macros to disable them
 * if needed.
 */

/ {
	model = "Renesas RZ SMARC Carrier-II Board";
	compatible = "renesas,smarc2-evk";

	chosen {
		bootargs = "ignore_loglevel";
		stdout-path = "serial3:115200n8";
	};

	can_transceiver0: can-phy0 {
		compatible = "ti,tcan1042";
		#phy-cells = <0>;
		max-bitrate = <8000000>;
		status = "disabled";
	};

	can_transceiver1: can-phy1 {
		compatible = "ti,tcan1042";
		#phy-cells = <0>;
		max-bitrate = <8000000>;
		status = "disabled";
	};

	keys: keys {
		compatible = "gpio-keys";

		key-1 {
			interrupts-extended = <&pinctrl KEY_1_GPIO IRQ_TYPE_EDGE_FALLING>;
			linux,code = <KEY_1>;
			label = "USER_SW1";
			wakeup-source;
			debounce-interval = <20>;
		};

Annotation

Implementation Notes