Documentation/devicetree/bindings/clock/qcom,gcc.txt

   1 Qualcomm Global Clock & Reset Controller Binding
   2 ------------------------------------------------
   3
   4 Required properties :
   5 - compatible : shall contain only one of the following:
   6
   7                         "qcom,gcc-apq8064"
   8                         "qcom,gcc-apq8084"
   9                         "qcom,gcc-ipq8064"
  10                         "qcom,gcc-ipq4019"
  11                         "qcom,gcc-ipq8074"
  12                         "qcom,gcc-msm8660"
  13                         "qcom,gcc-msm8916"
  14                         "qcom,gcc-msm8960"
  15                         "qcom,gcc-msm8974"
  16                         "qcom,gcc-msm8974pro"
  17                         "qcom,gcc-msm8974pro-ac"
  18                         "qcom,gcc-msm8994"
  19                         "qcom,gcc-msm8996"
  20                         "qcom,gcc-msm8998"
  21                         "qcom,gcc-mdm9615"
  22                         "qcom,gcc-qcs404"
  23                         "qcom,gcc-sdm630"
  24                         "qcom,gcc-sdm660"
  25                         "qcom,gcc-sdm845"
  26                         "qcom,gcc-sm8150"
  27
  28 - reg : shall contain base register location and length
  29 - #clock-cells : shall contain 1
  30 - #reset-cells : shall contain 1
  31
  32 Optional properties :
  33 - #power-domain-cells : shall contain 1
  34 - Qualcomm TSENS (thermal sensor device) on some devices can
  35 be part of GCC and hence the TSENS properties can also be
  36 part of the GCC/clock-controller node.
  37 For more details on the TSENS properties please refer
  38 Documentation/devicetree/bindings/thermal/qcom-tsens.txt
  39 - protected-clocks : Protected clock specifier list as per common clock
  40  binding.
  41
  42 For SM8150 only:
  43        - clocks: a list of phandles and clock-specifier pairs,
  44                  one for each entry in clock-names.
  45        - clock-names: "bi_tcxo" (required)
  46                       "sleep_clk" (optional)
  47                       "aud_ref_clock" (optional)
  48
  49 Example:
  50         clock-controller@900000 {
  51                 compatible = "qcom,gcc-msm8960";
  52                 reg = <0x900000 0x4000>;
  53                 #clock-cells = <1>;
  54                 #reset-cells = <1>;
  55                 #power-domain-cells = <1>;
  56         };
  57
  58 Example of GCC with TSENS properties:
  59         clock-controller@900000 {
  60                 compatible = "qcom,gcc-apq8064";
  61                 reg = <0x00900000 0x4000>;
  62                 nvmem-cells = <&tsens_calib>, <&tsens_backup>;
  63                 nvmem-cell-names = "calib", "calib_backup";
  64                 #clock-cells = <1>;
  65                 #reset-cells = <1>;
  66                 #thermal-sensor-cells = <1>;
  67         };
  68
  69 Example of GCC with protected-clocks properties:
  70         clock-controller@100000 {
  71                 compatible = "qcom,gcc-sdm845";
  72                 reg = <0x100000 0x1f0000>;
  73                 #clock-cells = <1>;
  74                 #reset-cells = <1>;
  75                 #power-domain-cells = <1>;
  76                 protected-clocks = <GCC_QSPI_CORE_CLK>,
  77                                    <GCC_QSPI_CORE_CLK_SRC>,
  78                                    <GCC_QSPI_CNOC_PERIPH_AHB_CLK>,
  79                                    <GCC_LPASS_Q6_AXI_CLK>,
  80                                    <GCC_LPASS_SWAY_CLK>;
  81         };
  82
  83 Example of GCC with clocks
  84         gcc: clock-controller@100000 {
  85                 compatible = "qcom,gcc-sm8150";
  86                 reg = <0x00100000 0x1f0000>;
  87                 #clock-cells = <1>;
  88                 #reset-cells = <1>;
  89                 #power-domain-cells = <1>;
  90                 clock-names = "bi_tcxo",
  91                               "sleep_clk";
  92                 clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
  93                          <&sleep_clk>;
  94         };