arch/arc/boot/dts/axc003_idu.dtsi

Source file repositories/reference/linux-study-clean/arch/arc/boot/dts/axc003_idu.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arc/boot/dts/axc003_idu.dtsi
Extension
.dtsi
Size
3940 bytes
Lines
168
Domain
Architecture Layer
Bucket
arch/arc
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
/*
 * Copyright (C) 2014, 2015 Synopsys, Inc. (www.synopsys.com)
 */

/*
 * Device tree for AXC003 CPU card: HS38x2 (Dual Core) with IDU intc
 */

/include/ "skeleton_hs_idu.dtsi"

/ {
	compatible = "snps,arc";
	#address-cells = <2>;
	#size-cells = <2>;

	cpu_card {
		compatible = "simple-bus";
		#address-cells = <1>;
		#size-cells = <1>;

		ranges = <0x00000000 0x0 0xf0000000 0x10000000>;

		input_clk: input-clk {
			#clock-cells = <0>;
			compatible = "fixed-clock";
			clock-frequency = <33333333>;
		};

		core_clk: core-clk@80 {
			compatible = "snps,axs10x-arc-pll-clock";
			reg = <0x80 0x10>, <0x100 0x10>;
			#clock-cells = <0>;
			clocks = <&input_clk>;

			/*
			 * Set initial core pll output frequency to 100MHz.
			 * It will be applied at the core pll driver probing
			 * on early boot.
			 */
			assigned-clocks = <&core_clk>;
			assigned-clock-rates = <100000000>;
		};

		core_intc: archs-intc@cpu {
			compatible = "snps,archs-intc";
			interrupt-controller;
			#interrupt-cells = <1>;
		};

		idu_intc: idu-interrupt-controller {
			compatible = "snps,archs-idu-intc";
			interrupt-controller;
			interrupt-parent = <&core_intc>;
			#interrupt-cells = <1>;
		};

		/*
		 * this GPIO block ORs all interrupts on CPU card (creg,..)
		 * to uplink only 1 IRQ to ARC core intc
		 */
		dw-apb-gpio@2000 {
			compatible = "snps,dw-apb-gpio";
			reg = < 0x2000 0x80 >;
			#address-cells = <1>;
			#size-cells = <0>;

			ictl_intc: gpio-controller@0 {
				compatible = "snps,dw-apb-gpio-port";
				gpio-controller;

Annotation

Implementation Notes