Bindings/clock/cirrus,cs2000-cp.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/clock/cirrus,cs2000-cp.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: CIRRUS LOGIC Fractional-N Clock Synthesizer & Clock Multiplier
   8
   9 maintainers:
  10   - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
  11
  12 description: |
  13   The CS2000-CP is an extremely versatile system clocking device that
  14   utilizes a programmable phase lock loop.
  15
  16   Link: https://www.cirrus.com/products/cs2000/
  17
  18 properties:
  19   compatible:
  20     enum:
  21       - cirrus,cs2000-cp
  22
  23   clocks:
  24     description:
  25       Common clock binding for CLK_IN, XTI/REF_CLK
  26     maxItems: 2
  27
  28   clock-names:
  29     items:
  30       - const: clk_in
  31       - const: ref_clk
  32
  33   '#clock-cells':
  34     const: 0
  35
  36   reg:
  37     maxItems: 1
  38
  39   cirrus,aux-output-source:
  40     description:
  41       Specifies the function of the auxiliary clock output pin
  42     $ref: /schemas/types.yaml#/definitions/uint32
  43     enum:
  44       - 0 # CS2000CP_AUX_OUTPUT_REF_CLK:  ref_clk input
  45       - 1 # CS2000CP_AUX_OUTPUT_CLK_IN:   clk_in input
  46       - 2 # CS2000CP_AUX_OUTPUT_CLK_OUT:  clk_out output
  47       - 3 # CS2000CP_AUX_OUTPUT_PLL_LOCK: pll lock status
  48     default: 0
  49
  50   cirrus,clock-skip:
  51     description:
  52       This mode allows the PLL to maintain lock even when CLK_IN
  53       has missing pulses for up to 20 ms.
  54     $ref: /schemas/types.yaml#/definitions/flag
  55
  56   cirrus,dynamic-mode:
  57     description:
  58       In dynamic mode, the CLK_IN input is used to drive the
  59       digital PLL of the silicon.
  60       If not given, the static mode shall be used to derive the
  61       output signal directly from the REF_CLK input.
  62     $ref: /schemas/types.yaml#/definitions/flag
  63
  64 required:
  65   - compatible
  66   - reg
  67   - clocks
  68   - clock-names
  69   - '#clock-cells'
  70
  71 additionalProperties: false
  72
  73 examples:
  74   - |
  75     #include <dt-bindings/clock/cirrus,cs2000-cp.h>
  76
  77     i2c@0 {
  78       reg = <0x0 0x100>;
  79       #address-cells = <1>;
  80       #size-cells = <0>;
  81
  82       clock-controller@4f {
  83         #clock-cells = <0>;
  84         compatible = "cirrus,cs2000-cp";
  85         reg = <0x4f>;
  86         clocks = <&rcar_sound 0>, <&x12_clk>;
  87         clock-names = "clk_in", "ref_clk";
  88         cirrus,aux-output-source = <CS2000CP_AUX_OUTPUT_CLK_OUT>;
  89       };
  90     };