Documentation/devicetree/bindings/clock/milbeaut-clock.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/bindings/clock/milbeaut-clock.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Milbeaut SoCs Clock Controller Binding
   8
   9 maintainers:
  10   - Taichi Sugaya <sugaya.taichi@socionext.com>
  11
  12 description: |
  13   Milbeaut SoCs Clock controller is an integrated clock controller, which
  14   generates and supplies to all modules.
  15
  16   This binding uses common clock bindings
  17   [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
  18
  19 properties:
  20   compatible:
  21     oneOf:
  22       - items:
  23           - enum:
  24               - socionext,milbeaut-m10v-ccu
  25   clocks:
  26     maxItems: 1
  27     description: external clock
  28
  29   '#clock-cells':
  30     const: 1
  31
  32 required:
  33   - compatible
  34   - reg
  35   - clocks
  36   - '#clock-cells'
  37
  38 examples:
  39   # Clock controller node:
  40   - |
  41     m10v-clk-ctrl@1d021000 {
  42         compatible = "socionext,milbeaut-m10v-clk-ccu";
  43         reg = <0x1d021000 0x4000>;
  44         #clock-cells = <1>;
  45         clocks = <&clki40mhz>;
  46     };
  47
  48   # Required an external clock for Clock controller node:
  49   - |
  50     clocks {
  51         clki40mhz: clki40mhz {
  52             compatible = "fixed-clock";
  53             #clock-cells = <0>;
  54             clock-frequency = <40000000>;
  55         };
  56         /* other clocks */
  57     };
  58
  59   # The clock consumer shall specify the desired clock-output of the clock
  60   # controller as below by specifying output-id in its "clk" phandle cell.
  61   # 2: uart
  62   # 4: 32-bit timer
  63   # 7: UHS-I/II
  64   - |
  65     serial@1e700010 {
  66         compatible = "socionext,milbeaut-usio-uart";
  67         reg = <0x1e700010 0x10>;
  68         interrupts = <0 141 0x4>, <0 149 0x4>;
  69         interrupt-names = "rx", "tx";
  70         clocks = <&clk 2>;
  71     };
  72
  73 ...