arch/arm/boot/dts/allwinner/sun8i-r40-oka40i-c.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/allwinner/sun8i-r40-oka40i-c.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/allwinner/sun8i-r40-oka40i-c.dts
Extension
.dts
Size
3572 bytes
Lines
204
Domain
Architecture Layer
Bucket
arch/arm
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+ OR MIT
// Copyright (C) 2021 Ivan Uvarov <i.uvarov@cognitivepilot.com>
// Based on the sun8i-r40-bananapi-m2-ultra.dts, which is:
//	Copyright (C) 2017 Chen-Yu Tsai <wens@csie.org>
//	Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>

/dts-v1/;
#include "sun8i-r40-feta40i.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/leds/common.h>

/ {
	model = "Forlinx OKA40i-C";
	compatible = "forlinx,oka40i-c", "forlinx,feta40i-c", "allwinner,sun8i-r40";

	aliases {
		ethernet0 = &gmac;
		serial0 = &uart0;
		serial2 = &uart2;
		serial3 = &uart3;
		serial4 = &uart4;
		serial5 = &uart5; /* RS485 */
		serial7 = &uart7;
	};

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

	connector {
		compatible = "hdmi-connector";
		type = "a";

		port {
			hdmi_con_in: endpoint {
				remote-endpoint = <&hdmi_out_con>;
			};
		};
	};

	leds {
		compatible = "gpio-leds";

		led-5 { /* this is how the leds are labeled on the board */
			gpios = <&pio 7 26 GPIO_ACTIVE_LOW>; /* PH26 */
			color = <LED_COLOR_ID_GREEN>;
			function = LED_FUNCTION_STATUS;
		};

		led-6 {
			gpios = <&pio 8 15 GPIO_ACTIVE_LOW>; /* PI15 */
			color = <LED_COLOR_ID_BLUE>;
			function = LED_FUNCTION_STATUS;
		};
	};

	reg_vcc5v0: vcc5v0 {
		compatible = "regulator-fixed";
		regulator-name = "vcc5v0";
		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;
	};

	wifi_pwrseq: pwrseq {
		compatible = "mmc-pwrseq-simple";
		reset-gpios = <&pio 1 10 GPIO_ACTIVE_LOW>; // PB10 WIFI_EN
		clocks = <&ccu CLK_OUTA>;
		clock-names = "ext_clock";
	};

Annotation

Implementation Notes