qcom,spm.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: "http://devicetree.org/schemas/soc/qcom/qcom,spm.yaml#"
    5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    6 
    7 title: Qualcomm Subsystem Power Manager binding
    8 
    9 maintainers:
   10   - Andy Gross <agross@kernel.org>
   11   - Bjorn Andersson <bjorn.andersson@linaro.org>
   12 
   13 description: |
   14   This binding describes the Qualcomm Subsystem Power Manager, used to control
   15   the peripheral logic surrounding the application cores in Qualcomm platforms.
   16 
   17 properties:
   18   compatible:
   19     items:
   20       - enum:
   21           - qcom,sdm660-gold-saw2-v4.1-l2
   22           - qcom,sdm660-silver-saw2-v4.1-l2
   23           - qcom,msm8998-gold-saw2-v4.1-l2
   24           - qcom,msm8998-silver-saw2-v4.1-l2
   25           - qcom,msm8909-saw2-v3.0-cpu
   26           - qcom,msm8916-saw2-v3.0-cpu
   27           - qcom,msm8226-saw2-v2.1-cpu
   28           - qcom,msm8974-saw2-v2.1-cpu
   29           - qcom,apq8084-saw2-v2.1-cpu
   30           - qcom,apq8064-saw2-v1.1-cpu
   31       - const: qcom,saw2
   32 
   33   reg:
   34     description: Base address and size of the SPM register region
   35     maxItems: 1
   36 
   37 required:
   38   - compatible
   39   - reg
   40 
   41 additionalProperties: false
   42 
   43 examples:
   44   - |
   45 
   46     /* Example 1: SoC using SAW2 and kpss-acc-v2 CPUIdle */
   47     cpus {
   48         #address-cells = <1>;
   49         #size-cells = <0>;
   50 
   51         cpu@0 {
   52             compatible = "qcom,kryo";
   53             device_type = "cpu";
   54             enable-method = "qcom,kpss-acc-v2";
   55             qcom,saw = <&saw0>;
   56             reg = <0x0>;
   57             operating-points-v2 = <&cpu_opp_table>;
   58         };
   59     };
   60 
   61     saw0: power-manager@f9089000 {
   62         compatible = "qcom,msm8974-saw2-v2.1-cpu", "qcom,saw2";
   63         reg = <0xf9089000 0x1000>;
   64     };
   65 
   66   - |
   67 
   68     /*
   69      * Example 2: New-gen multi cluster SoC using SAW only for L2;
   70      * This does not require any cpuidle driver, nor any cpu phandle.
   71      */
   72     power-manager@17812000 {
   73         compatible = "qcom,msm8998-gold-saw2-v4.1-l2", "qcom,saw2";
   74         reg = <0x17812000 0x1000>;
   75     };
   76 
   77     power-manager@17912000 {
   78         compatible = "qcom,msm8998-silver-saw2-v4.1-l2", "qcom,saw2";
   79         reg = <0x17912000 0x1000>;
   80     };
   81 
   82 ...

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sys/contrib/device-tree/Bindings/soc/qcom/qcom,spm.yaml