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/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     enum:
  22       - socionext,milbeaut-m10v-ccu
  23
  24   reg:
  25     maxItems: 1
  26
  27   clocks:
  28     maxItems: 1
  29     description: external clock
  30
  31   '#clock-cells':
  32     const: 1
  33
  34 required:
  35   - compatible
  36   - reg
  37   - clocks
  38   - '#clock-cells'
  39
  40 additionalProperties: false
  41
  42 examples:
  43   # Clock controller node:
  44   - |
  45     m10v-clk-ctrl@1d021000 {
  46         compatible = "socionext,milbeaut-m10v-ccu";
  47         reg = <0x1d021000 0x4000>;
  48         #clock-cells = <1>;
  49         clocks = <&clki40mhz>;
  50     };
  51
  52   # Required an external clock for Clock controller node:
  53   - |
  54     clocks {
  55         clki40mhz: clki40mhz {
  56             compatible = "fixed-clock";
  57             #clock-cells = <0>;
  58             clock-frequency = <40000000>;
  59         };
  60         /* other clocks */
  61     };
  62
  63   # The clock consumer shall specify the desired clock-output of the clock
  64   # controller as below by specifying output-id in its "clk" phandle cell.
  65   # 2: uart
  66   # 4: 32-bit timer
  67   # 7: UHS-I/II
  68   - |
  69     serial@1e700010 {
  70         compatible = "socionext,milbeaut-usio-uart";
  71         reg = <0x1e700010 0x10>;
  72         interrupts = <0 141 0x4>, <0 149 0x4>;
  73         interrupt-names = "rx", "tx";
  74         clocks = <&clk 2>;
  75     };
  76
  77 ...