arch/arm/boot/dts/allwinner/sun7i-a20-hummingbird.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/allwinner/sun7i-a20-hummingbird.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/allwinner/sun7i-a20-hummingbird.dts
Extension
.dts
Size
5188 bytes
Lines
234
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

/dts-v1/;
#include "sun7i-a20.dtsi"
#include "sunxi-common-regulators.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>

/ {
	model = "Merrii A20 Hummingbird";
	compatible = "merrii,a20-hummingbird", "allwinner,sun7i-a20";

	aliases {
		serial0 = &uart0;
		serial1 = &uart2;
		serial2 = &uart3;
		serial3 = &uart4;
		serial4 = &uart5;
	};

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

	reg_mmc3_vdd: regulator-mmc3-vdd {
		compatible = "regulator-fixed";
		regulator-name = "mmc3_vdd";
		regulator-min-microvolt = <3000000>;
		regulator-max-microvolt = <3000000>;
		enable-active-high;
		gpio = <&pio 7 9 GPIO_ACTIVE_HIGH>; /* PH9 */
	};

	reg_gmac_vdd: regulator-gmac-vdd {
		compatible = "regulator-fixed";
		regulator-name = "gmac_vdd";
		regulator-min-microvolt = <3000000>;
		regulator-max-microvolt = <3000000>;
		enable-active-high;
		gpio = <&pio 7 16 GPIO_ACTIVE_HIGH>; /* PH16 */
	};
};

&ahci {
	target-supply = <&reg_ahci_5v>;
	status = "okay";
};

&ehci0 {
	status = "okay";
};

&ehci1 {
	status = "okay";
};

&gmac {
	pinctrl-names = "default";
	pinctrl-0 = <&gmac_rgmii_pins>;
	phy-handle = <&phy1>;
	phy-mode = "rgmii";
	phy-supply = <&reg_gmac_vdd>;
	status = "okay";
};

&i2c0 {
	status = "okay";

	axp209: pmic@34 {
		compatible = "x-powers,axp209";
		reg = <0x34>;

Annotation

Implementation Notes