1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/clock/renes 4 $id: http://devicetree.org/schemas/clock/renesas,9series.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Renesas 9-series I2C PCIe clock generat !! 7 title: Binding for Renesas 9-series I2C PCIe clock generators
8 8
9 description: | 9 description: |
10 The Renesas 9-series are I2C PCIe clock gene 10 The Renesas 9-series are I2C PCIe clock generators providing
11 from 1 to 20 output clocks. 11 from 1 to 20 output clocks.
12 12
13 When referencing the provided clock in the D 13 When referencing the provided clock in the DT using phandle
14 and clock specifier, the following mapping a 14 and clock specifier, the following mapping applies:
15 15
16 - 9FGV0241: 16 - 9FGV0241:
17 0 -- DIF0 17 0 -- DIF0
18 1 -- DIF1 18 1 -- DIF1
19 - 9FGV0441: <<
20 0 -- DIF0 <<
21 1 -- DIF1 <<
22 2 -- DIF2 <<
23 3 -- DIF3 <<
24 - 9FGV0841: <<
25 0 -- DIF0 <<
26 1 -- DIF1 <<
27 2 -- DIF2 <<
28 3 -- DIF3 <<
29 4 -- DIF4 <<
30 5 -- DIF5 <<
31 6 -- DIF6 <<
32 7 -- DIF7 <<
33 19
34 maintainers: 20 maintainers:
35 - Marek Vasut <marex@denx.de> 21 - Marek Vasut <marex@denx.de>
36 22
37 properties: 23 properties:
38 compatible: 24 compatible:
39 enum: 25 enum:
40 - renesas,9fgv0241 26 - renesas,9fgv0241
41 - renesas,9fgv0441 <<
42 - renesas,9fgv0841 <<
43 27
44 reg: 28 reg:
45 description: I2C device address 29 description: I2C device address
46 enum: [ 0x68, 0x6a ] 30 enum: [ 0x68, 0x6a ]
47 31
48 '#clock-cells': 32 '#clock-cells':
49 const: 1 33 const: 1
50 34
51 clocks: 35 clocks:
52 items: 36 items:
53 - description: XTal input clock 37 - description: XTal input clock
54 38
55 renesas,out-amplitude-microvolt: 39 renesas,out-amplitude-microvolt:
56 enum: [ 600000, 700000, 800000, 900000 ] 40 enum: [ 600000, 700000, 800000, 900000 ]
57 description: Output clock signal amplitude 41 description: Output clock signal amplitude
58 42
59 renesas,out-spread-spectrum: 43 renesas,out-spread-spectrum:
60 $ref: /schemas/types.yaml#/definitions/uin 44 $ref: /schemas/types.yaml#/definitions/uint32
61 enum: [ 100000, 99750, 99500 ] 45 enum: [ 100000, 99750, 99500 ]
62 description: Output clock down spread in p 46 description: Output clock down spread in pcm (1/1000 of percent)
63 47
64 patternProperties: 48 patternProperties:
65 "^DIF[0-19]$": 49 "^DIF[0-19]$":
66 type: object 50 type: object
67 description: 51 description:
68 Description of one of the outputs (DIF0. 52 Description of one of the outputs (DIF0..DIF19).
69 53
70 properties: 54 properties:
71 renesas,slew-rate: 55 renesas,slew-rate:
72 $ref: /schemas/types.yaml#/definitions 56 $ref: /schemas/types.yaml#/definitions/uint32
73 enum: [ 2000000, 3000000 ] 57 enum: [ 2000000, 3000000 ]
74 description: Output clock slew rate se 58 description: Output clock slew rate select in V/ns
75 59
76 additionalProperties: false 60 additionalProperties: false
77 61
78 required: 62 required:
79 - compatible 63 - compatible
80 - reg 64 - reg
81 - clocks 65 - clocks
82 - '#clock-cells' 66 - '#clock-cells'
83 67
84 additionalProperties: false 68 additionalProperties: false
85 69
86 examples: 70 examples:
87 - | 71 - |
88 /* 25MHz reference crystal */ 72 /* 25MHz reference crystal */
89 ref25: ref25m { 73 ref25: ref25m {
90 compatible = "fixed-clock"; 74 compatible = "fixed-clock";
91 #clock-cells = <0>; 75 #clock-cells = <0>;
92 clock-frequency = <25000000>; 76 clock-frequency = <25000000>;
93 }; 77 };
94 78
95 i2c@0 { 79 i2c@0 {
96 reg = <0x0 0x100>; 80 reg = <0x0 0x100>;
97 #address-cells = <1>; 81 #address-cells = <1>;
98 #size-cells = <0>; 82 #size-cells = <0>;
99 83
100 rs9: clock-generator@6a { 84 rs9: clock-generator@6a {
101 compatible = "renesas,9fgv0241"; 85 compatible = "renesas,9fgv0241";
102 reg = <0x6a>; 86 reg = <0x6a>;
103 #clock-cells = <1>; 87 #clock-cells = <1>;
104 88
105 clocks = <&ref25m>; 89 clocks = <&ref25m>;
106 90
107 DIF0 { 91 DIF0 {
108 renesas,slew-rate = <3000000>; 92 renesas,slew-rate = <3000000>;
109 }; 93 };
110 }; 94 };
111 }; 95 };
112 96
113 ... 97 ...
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