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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-03-29 19:52:32 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-03-29 19:52:32 +0300
commit79bc8bface8767078d6803debaef54f044117731 (patch)
tree0ff234891042b5a71e4e568d93c0e1557de07b90 /Documentation/devicetree/bindings/cpufreq
parent2353828f3695ecbbc3fb4b695fa6c77323db42d0 (diff)
parent0474bcc9c174158281bc55838b497e0f7b76fcbb (diff)
downloadlinux-79bc8bface8767078d6803debaef54f044117731.tar.xz
Merge branch 'pm-opp'
Merge OPP (Operating Performance Points) changes for 5.18-rc1. * pm-opp: Documentation: EM: Describe new registration method using DT OPP: Add support of "opp-microwatt" for EM registration PM: EM: add macro to set .active_power() callback conditionally OPP: Add "opp-microwatt" supporting code dt-bindings: opp: Add "opp-microwatt" entry in the OPP dt-bindings: power: avs: qcom,cpr: Convert to DT schema arm64: dts: qcom: qcs404: Rename CPU and CPR OPP tables arm64: dts: qcom: msm8996: Rename cluster OPP tables dt-bindings: opp: Convert qcom-nvmem-cpufreq to DT schema dt-bindings: opp: qcom-opp: Convert to DT schema arm64: dts: qcom: msm8996-mtp: Add msm8996 compatible dt-bindings: arm: qcom: Add msm8996 and apq8096 compatibles opp: Expose of-node's name in debugfs
Diffstat (limited to 'Documentation/devicetree/bindings/cpufreq')
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/cpufreq/qcom-cpufreq-nvmem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. NVMEM CPUFreq bindings
+
+maintainers:
+ - Ilia Lin <ilia.lin@kernel.org>
+
+description: |
+ In certain Qualcomm Technologies, Inc. SoCs such as QCS404, The CPU supply
+ voltage is dynamically configured by Core Power Reduction (CPR) depending on
+ current CPU frequency and efuse values.
+ CPR provides a power domain with multiple levels that are selected depending
+ on the CPU OPP in use. The CPUFreq driver sets the CPR power domain level
+ according to the required OPPs defined in the CPU OPP tables.
+
+select:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,qcs404
+ required:
+ - compatible
+
+properties:
+ cpus:
+ type: object
+
+ patternProperties:
+ 'cpu@[0-9a-f]+':
+ type: object
+
+ properties:
+ power-domains:
+ maxItems: 1
+
+ power-domain-names:
+ items:
+ - const: cpr
+
+ required:
+ - power-domains
+ - power-domain-names
+
+patternProperties:
+ '^opp-table(-[a-z0-9]+)?$':
+ if:
+ properties:
+ compatible:
+ const: operating-points-v2-kryo-cpu
+ then:
+ patternProperties:
+ '^opp-?[0-9]+$':
+ required:
+ - required-opps
+
+additionalProperties: true
+
+examples:
+ - |
+ / {
+ model = "Qualcomm Technologies, Inc. QCS404";
+ compatible = "qcom,qcs404";
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ CPU0: cpu@100 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a53";
+ reg = <0x100>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0>;
+ next-level-cache = <&L2_0>;
+ #cooling-cells = <2>;
+ clocks = <&apcs_glb>;
+ operating-points-v2 = <&cpu_opp_table>;
+ power-domains = <&cpr>;
+ power-domain-names = "cpr";
+ };
+
+ CPU1: cpu@101 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a53";
+ reg = <0x101>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0>;
+ next-level-cache = <&L2_0>;
+ #cooling-cells = <2>;
+ clocks = <&apcs_glb>;
+ operating-points-v2 = <&cpu_opp_table>;
+ power-domains = <&cpr>;
+ power-domain-names = "cpr";
+ };
+
+ CPU2: cpu@102 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a53";
+ reg = <0x102>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0>;
+ next-level-cache = <&L2_0>;
+ #cooling-cells = <2>;
+ clocks = <&apcs_glb>;
+ operating-points-v2 = <&cpu_opp_table>;
+ power-domains = <&cpr>;
+ power-domain-names = "cpr";
+ };
+
+ CPU3: cpu@103 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a53";
+ reg = <0x103>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0>;
+ next-level-cache = <&L2_0>;
+ #cooling-cells = <2>;
+ clocks = <&apcs_glb>;
+ operating-points-v2 = <&cpu_opp_table>;
+ power-domains = <&cpr>;
+ power-domain-names = "cpr";
+ };
+ };
+
+ cpu_opp_table: opp-table-cpu {
+ compatible = "operating-points-v2-kryo-cpu";
+ opp-shared;
+
+ opp-1094400000 {
+ opp-hz = /bits/ 64 <1094400000>;
+ required-opps = <&cpr_opp1>;
+ };
+ opp-1248000000 {
+ opp-hz = /bits/ 64 <1248000000>;
+ required-opps = <&cpr_opp2>;
+ };
+ opp-1401600000 {
+ opp-hz = /bits/ 64 <1401600000>;
+ required-opps = <&cpr_opp3>;
+ };
+ };
+
+ cpr_opp_table: opp-table-cpr {
+ compatible = "operating-points-v2-qcom-level";
+
+ cpr_opp1: opp1 {
+ opp-level = <1>;
+ qcom,opp-fuse-level = <1>;
+ };
+ cpr_opp2: opp2 {
+ opp-level = <2>;
+ qcom,opp-fuse-level = <2>;
+ };
+ cpr_opp3: opp3 {
+ opp-level = <3>;
+ qcom,opp-fuse-level = <3>;
+ };
+ };
+ };