| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/cpufreq/cpufreq-mediatek-hw.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: MediaTek's CPUFREQ Bindings |
| |
| maintainers: |
| - Hector Yuan <hector.yuan@mediatek.com> |
| |
| description: |
| CPUFREQ HW is a hardware engine used by MediaTek |
| SoCs to manage frequency in hardware. It is capable of controlling frequency |
| for multiple clusters. |
| |
| properties: |
| compatible: |
| const: mediatek,cpufreq-hw |
| |
| reg: |
| minItems: 1 |
| maxItems: 2 |
| description: | |
| Addresses and sizes for the memory of the |
| HW bases in each frequency domain. |
| |
| required: |
| - compatible |
| - reg |
| |
| additionalProperties: true |
| |
| examples: |
| - | |
| cpus { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| cpu0: cpu@0 { |
| device_type = "cpu"; |
| compatible = "arm,cortex-a55"; |
| enable-method = "psci"; |
| performance-domains = <&performance 0>; |
| reg = <0x000>; |
| }; |
| |
| cpu1: cpu@100 { |
| device_type = "cpu"; |
| compatible = "arm,cortex-a55"; |
| enable-method = "psci"; |
| performance-domains = <&performance 0>; |
| reg = <0x100>; |
| }; |
| |
| cpu2: cpu@200 { |
| device_type = "cpu"; |
| compatible = "arm,cortex-a55"; |
| enable-method = "psci"; |
| performance-domains = <&performance 0>; |
| reg = <0x200>; |
| }; |
| |
| cpu3: cpu@300 { |
| device_type = "cpu"; |
| compatible = "arm,cortex-a55"; |
| enable-method = "psci"; |
| performance-domains = <&performance 0>; |
| reg = <0x300>; |
| }; |
| |
| cpu4: cpu@400 { |
| device_type = "cpu"; |
| compatible = "arm,cortex-a55"; |
| enable-method = "psci"; |
| performance-domains = <&performance 1>; |
| reg = <0x400>; |
| }; |
| |
| cpu5: cpu@500 { |
| device_type = "cpu"; |
| compatible = "arm,cortex-a55"; |
| enable-method = "psci"; |
| performance-domains = <&performance 1>; |
| reg = <0x500>; |
| }; |
| |
| cpu6: cpu@600 { |
| device_type = "cpu"; |
| compatible = "arm,cortex-a75"; |
| enable-method = "psci"; |
| performance-domains = <&performance 1>; |
| reg = <0x600>; |
| }; |
| |
| cpu7: cpu@700 { |
| device_type = "cpu"; |
| compatible = "arm,cortex-a75"; |
| enable-method = "psci"; |
| performance-domains = <&performance 1>; |
| reg = <0x700>; |
| }; |
| }; |
| |
| /* ... */ |
| |
| soc { |
| #address-cells = <2>; |
| #size-cells = <2>; |
| |
| performance: performance-controller@11bc00 { |
| compatible = "mediatek,cpufreq-hw"; |
| reg = <0 0x0011bc10 0 0x120>, <0 0x0011bd30 0 0x120>; |
| #performance-domain-cells = <1>; |
| }; |
| }; |