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+# 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. Each entry corresponds to
+ a register bank for each frequency domain present.
+
+ "#performance-domain-cells":
+ description:
+ Number of cells in a performance domain specifier.
+ Set const to 1 here for nodes providing multiple
+ performance domains.
+ 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-a55";
+ enable-method = "psci";
+ performance-domains = <&performance 0>;
+ reg = <0x000>;
+ };
+ };
+
+ /* ... */
+
+ 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>;
+ };
+ };