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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/cpufreq/cpufreq-qcom-hw.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. CPUFREQ
+
+maintainers:
+ - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+description: |
+
+ CPUFREQ HW is a hardware engine used by some Qualcomm Technologies, Inc. (QTI)
+ SoCs to manage frequency in hardware. It is capable of controlling frequency
+ for multiple clusters.
+
+properties:
+ compatible:
+ oneOf:
+ - description: v1 of CPUFREQ HW
+ items:
+ - const: qcom,cpufreq-hw
+
+ - description: v2 of CPUFREQ HW (EPSS)
+ items:
+ - enum:
+ - qcom,qdu1000-cpufreq-epss
+ - qcom,sc7280-cpufreq-epss
+ - qcom,sc8280xp-cpufreq-epss
+ - qcom,sm6375-cpufreq-epss
+ - qcom,sm8250-cpufreq-epss
+ - qcom,sm8350-cpufreq-epss
+<<<<<<<
+=======
+ - qcom,sm8450-cpufreq-epss
+ - qcom,sm8550-cpufreq-epss
+>>>>>>>
+ - const: qcom,cpufreq-epss
+
+ reg:
+ minItems: 2
+ items:
+ - description: Frequency domain 0 register region
+ - description: Frequency domain 1 register region
+ - description: Frequency domain 2 register region
+
+ reg-names:
+ minItems: 2
+ items:
+ - const: freq-domain0
+ - const: freq-domain1
+ - const: freq-domain2
+
+ clocks:
+ items:
+ - description: XO Clock
+ - description: GPLL0 Clock
+
+ clock-names:
+ items:
+ - const: xo
+ - const: alternate
+
+ interrupts:
+ minItems: 1
+ maxItems: 3
+
+ interrupt-names:
+ minItems: 1
+ items:
+ - const: dcvsh-irq-0
+ - const: dcvsh-irq-1
+ - const: dcvsh-irq-2
+
+ '#freq-domain-cells':
+ const: 1
+
+ '#clock-cells':
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - '#freq-domain-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,gcc-sdm845.h>
+ #include <dt-bindings/clock/qcom,rpmh.h>
+
+ // Example 1: Dual-cluster, Quad-core per cluster. CPUs within a cluster
+ // switch DCVS state together.
+ cpus {
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ CPU0: cpu@0 {
+ device_type = "cpu";
+ compatible = "qcom,kryo385";
+ reg = <0x0 0x0>;
+ enable-method = "psci";
+ next-level-cache = <&L2_0>;
+ qcom,freq-domain = <&cpufreq_hw 0>;
+ clocks = <&cpufreq_hw 0>;
+ L2_0: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ next-level-cache = <&L3_0>;
+ L3_0: l3-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <3>;
+ };
+ };
+ };
+
+ CPU1: cpu@100 {
+ device_type = "cpu";
+ compatible = "qcom,kryo385";
+ reg = <0x0 0x100>;
+ enable-method = "psci";
+ next-level-cache = <&L2_100>;
+ qcom,freq-domain = <&cpufreq_hw 0>;
+ clocks = <&cpufreq_hw 0>;
+ L2_100: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ next-level-cache = <&L3_0>;
+ };
+ };
+
+ CPU2: cpu@200 {
+ device_type = "cpu";
+ compatible = "qcom,kryo385";
+ reg = <0x0 0x200>;
+ enable-method = "psci";
+ next-level-cache = <&L2_200>;
+ qcom,freq-domain = <&cpufreq_hw 0>;
+ clocks = <&cpufreq_hw 0>;
+ L2_200: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ next-level-cache = <&L3_0>;
+ };
+ };
+
+ CPU3: cpu@300 {
+ device_type = "cpu";
+ compatible = "qcom,kryo385";
+ reg = <0x0 0x300>;
+ enable-method = "psci";
+ next-level-cache = <&L2_300>;
+ qcom,freq-domain = <&cpufreq_hw 0>;
+ clocks = <&cpufreq_hw 0>;
+ L2_300: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ next-level-cache = <&L3_0>;
+ };
+ };
+
+ CPU4: cpu@400 {
+ device_type = "cpu";
+ compatible = "qcom,kryo385";
+ reg = <0x0 0x400>;
+ enable-method = "psci";
+ next-level-cache = <&L2_400>;
+ qcom,freq-domain = <&cpufreq_hw 1>;
+ clocks = <&cpufreq_hw 1>;
+ L2_400: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ next-level-cache = <&L3_0>;
+ };
+ };
+
+ CPU5: cpu@500 {
+ device_type = "cpu";
+ compatible = "qcom,kryo385";
+ reg = <0x0 0x500>;
+ enable-method = "psci";
+ next-level-cache = <&L2_500>;
+ qcom,freq-domain = <&cpufreq_hw 1>;
+ clocks = <&cpufreq_hw 1>;
+ L2_500: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ next-level-cache = <&L3_0>;
+ };
+ };
+
+ CPU6: cpu@600 {
+ device_type = "cpu";
+ compatible = "qcom,kryo385";
+ reg = <0x0 0x600>;
+ enable-method = "psci";
+ next-level-cache = <&L2_600>;
+ qcom,freq-domain = <&cpufreq_hw 1>;
+ clocks = <&cpufreq_hw 1>;
+ L2_600: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ next-level-cache = <&L3_0>;
+ };
+ };
+
+ CPU7: cpu@700 {
+ device_type = "cpu";
+ compatible = "qcom,kryo385";
+ reg = <0x0 0x700>;
+ enable-method = "psci";
+ next-level-cache = <&L2_700>;
+ qcom,freq-domain = <&cpufreq_hw 1>;
+ clocks = <&cpufreq_hw 1>;
+ L2_700: l2-cache {
+ compatible = "cache";
+ cache-unified;
+ cache-level = <2>;
+ next-level-cache = <&L3_0>;
+ };
+ };
+ };
+
+ soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ cpufreq@17d43000 {
+ compatible = "qcom,cpufreq-hw";
+ reg = <0x17d43000 0x1400>, <0x17d45800 0x1400>;
+ reg-names = "freq-domain0", "freq-domain1";
+
+ clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GPLL0>;
+ clock-names = "xo", "alternate";
+
+ #freq-domain-cells = <1>;
+ #clock-cells = <1>;
+ };
+ };
+...