xref: /freebsd/sys/contrib/device-tree/Bindings/clock/cirrus,cs2000-cp.yaml (revision fac71e4e09885bb2afa3d984a0c239a52e1a7418) 
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
7title: CIRRUS LOGIC Fractional-N Clock Synthesizer & Clock Multiplier
8
9maintainers:
10  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
11
12description: |
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
18properties:
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
64required:
65  - compatible
66  - reg
67  - clocks
68  - clock-names
69  - '#clock-cells'
70
71additionalProperties: false
72
73examples:
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    };
91