arch/arm64/boot/dts/allwinner/sun50i-h616-cpu-opp.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/allwinner/sun50i-h616-cpu-opp.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/allwinner/sun50i-h616-cpu-opp.dtsi
Extension
.dtsi
Size
3148 bytes
Lines
127
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+ OR MIT)
// Copyright (C) 2023 Martin Botka <martin@somainline.org>

/ {
	cpu_opp_table: opp-table-cpu {
		compatible = "allwinner,sun50i-h616-operating-points";
		nvmem-cells = <&cpu_speed_grade>;
		opp-shared;

		opp-480000000 {
			opp-hz = /bits/ 64 <480000000>;
			opp-microvolt = <900000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
			opp-supported-hw = <0x3f>;
		};

		opp-600000000 {
			opp-hz = /bits/ 64 <600000000>;
			opp-microvolt = <900000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
			opp-supported-hw = <0x12>;
		};

		opp-720000000 {
			opp-hz = /bits/ 64 <720000000>;
			opp-microvolt = <900000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
			opp-supported-hw = <0x2d>;
		};

		opp-792000000 {
			opp-hz = /bits/ 64 <792000000>;
			opp-microvolt-speed1 = <900000>;
			opp-microvolt-speed4 = <940000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
			opp-supported-hw = <0x12>;
		};

		opp-936000000 {
			opp-hz = /bits/ 64 <936000000>;
			opp-microvolt = <900000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
			opp-supported-hw = <0x0d>;
		};

		opp-1008000000 {
			opp-hz = /bits/ 64 <1008000000>;
			opp-microvolt-speed0 = <950000>;
			opp-microvolt-speed1 = <940000>;
			opp-microvolt-speed2 = <950000>;
			opp-microvolt-speed3 = <950000>;
			opp-microvolt-speed4 = <1020000>;
			opp-microvolt-speed5 = <900000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
			opp-supported-hw = <0x3f>;
		};

		opp-1032000000 {
			opp-hz = /bits/ 64 <1032000000>;
			opp-microvolt = <900000>;
			clock-latency-ns = <244144>; /* 8 32k periods */
			opp-supported-hw = <0x20>;
		};

		opp-1104000000 {
			opp-hz = /bits/ 64 <1104000000>;
			opp-microvolt-speed0 = <1000000>;
			opp-microvolt-speed2 = <1000000>;
			opp-microvolt-speed3 = <1000000>;
			opp-microvolt-speed5 = <950000>;

Annotation

Implementation Notes