arch/arm64/boot/dts/allwinner/sun50i-a64-cpu-opp.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/allwinner/sun50i-a64-cpu-opp.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/allwinner/sun50i-a64-cpu-opp.dtsi
Extension
.dtsi
Size
1553 bytes
Lines
76
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
/*
 * Copyright (C) 2020 Vasily khoruzhick <anarsoul@gmail.com>
 */

/ {
	cpu0_opp_table: opp-table-cpu {
		compatible = "operating-points-v2";
		opp-shared;

		opp-648000000 {
			opp-hz = /bits/ 64 <648000000>;
			opp-microvolt = <1040000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
		};

		opp-816000000 {
			opp-hz = /bits/ 64 <816000000>;
			opp-microvolt = <1100000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
		};

		opp-912000000 {
			opp-hz = /bits/ 64 <912000000>;
			opp-microvolt = <1120000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
		};

		opp-960000000 {
			opp-hz = /bits/ 64 <960000000>;
			opp-microvolt = <1160000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
		};

		opp-1008000000 {
			opp-hz = /bits/ 64 <1008000000>;
			opp-microvolt = <1200000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
		};

		opp-1056000000 {
			opp-hz = /bits/ 64 <1056000000>;
			opp-microvolt = <1240000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
		};

		opp-1104000000 {
			opp-hz = /bits/ 64 <1104000000>;
			opp-microvolt = <1260000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
		};

		opp-1152000000 {
			opp-hz = /bits/ 64 <1152000000>;
			opp-microvolt = <1300000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
		};
	};
};

&cpu0 {
	operating-points-v2 = <&cpu0_opp_table>;
};

&cpu1 {
	operating-points-v2 = <&cpu0_opp_table>;
};

&cpu2 {
	operating-points-v2 = <&cpu0_opp_table>;

Annotation

Implementation Notes