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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/cpufreq/mediatek,mt8196-cpufreq-hw.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MediaTek Hybrid CPUFreq for MT8196/MT6991 series SoCs
maintainers:
- Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
description:
MT8196 uses CPUFreq management hardware that supports dynamic voltage
frequency scaling (dvfs), and can support several performance domains.
properties:
compatible:
const: mediatek,mt8196-cpufreq-hw
reg:
items:
- description: FDVFS control register region
- description: OPP tables and control for performance domain 0
- description: OPP tables and control for performance domain 1
- description: OPP tables and control for performance domain 2
"#performance-domain-cells":
const: 1
required:
- compatible
- reg
- "#performance-domain-cells"
additionalProperties: false
examples:
- |
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a720";
enable-method = "psci";
performance-domains = <&performance 0>;
reg = <0x000>;
};
/* ... */
cpu6: cpu@600 {
device_type = "cpu";
compatible = "arm,cortex-x4";
enable-method = "psci";
performance-domains = <&performance 1>;
reg = <0x600>;
};
cpu7: cpu@700 {
device_type = "cpu";
compatible = "arm,cortex-x925";
enable-method = "psci";
performance-domains = <&performance 2>;
reg = <0x700>;
};
};
/* ... */
soc {
#address-cells = <2>;
#size-cells = <2>;
performance: performance-controller@c2c2034 {
compatible = "mediatek,mt8196-cpufreq-hw";
reg = <0 0xc220400 0 0x20>, <0 0xc2c0f20 0 0x120>,
<0 0xc2c1040 0 0x120>, <0 0xc2c1160 0 0x120>;
#performance-domain-cells = <1>;
};
};
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