| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/clock/renesas,9series.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Renesas 9-series I2C PCIe clock generators |
| 8 | |
| 9 | description: | |
| 10 | The Renesas 9-series are I2C PCIe clock generators providing |
| 11 | from 1 to 20 output clocks. |
| 12 | |
| 13 | When referencing the provided clock in the DT using phandle |
| 14 | and clock specifier, the following mapping applies: |
| 15 | |
| 16 | - 9FGV0241: |
| 17 | 0 -- DIF0 |
| 18 | 1 -- DIF1 |
| 19 | - 9FGV0441: |
| 20 | 0 -- DIF0 |
| 21 | 1 -- DIF1 |
| 22 | 2 -- DIF2 |
| 23 | 3 -- DIF3 |
| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [diff] [blame] | 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 |
| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 33 | |
| 34 | maintainers: |
| 35 | - Marek Vasut <marex@denx.de> |
| 36 | |
| 37 | properties: |
| 38 | compatible: |
| 39 | enum: |
| 40 | - renesas,9fgv0241 |
| 41 | - renesas,9fgv0441 |
| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [diff] [blame] | 42 | - renesas,9fgv0841 |
| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 43 | |
| 44 | reg: |
| 45 | description: I2C device address |
| 46 | enum: [ 0x68, 0x6a ] |
| 47 | |
| 48 | '#clock-cells': |
| 49 | const: 1 |
| 50 | |
| 51 | clocks: |
| 52 | items: |
| 53 | - description: XTal input clock |
| 54 | |
| 55 | renesas,out-amplitude-microvolt: |
| 56 | enum: [ 600000, 700000, 800000, 900000 ] |
| 57 | description: Output clock signal amplitude |
| 58 | |
| 59 | renesas,out-spread-spectrum: |
| 60 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 61 | enum: [ 100000, 99750, 99500 ] |
| 62 | description: Output clock down spread in pcm (1/1000 of percent) |
| 63 | |
| 64 | patternProperties: |
| 65 | "^DIF[0-19]$": |
| 66 | type: object |
| 67 | description: |
| 68 | Description of one of the outputs (DIF0..DIF19). |
| 69 | |
| 70 | properties: |
| 71 | renesas,slew-rate: |
| 72 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 73 | enum: [ 2000000, 3000000 ] |
| 74 | description: Output clock slew rate select in V/ns |
| 75 | |
| 76 | additionalProperties: false |
| 77 | |
| 78 | required: |
| 79 | - compatible |
| 80 | - reg |
| 81 | - clocks |
| 82 | - '#clock-cells' |
| 83 | |
| 84 | additionalProperties: false |
| 85 | |
| 86 | examples: |
| 87 | - | |
| 88 | /* 25MHz reference crystal */ |
| 89 | ref25: ref25m { |
| 90 | compatible = "fixed-clock"; |
| 91 | #clock-cells = <0>; |
| 92 | clock-frequency = <25000000>; |
| 93 | }; |
| 94 | |
| 95 | i2c@0 { |
| 96 | reg = <0x0 0x100>; |
| 97 | #address-cells = <1>; |
| 98 | #size-cells = <0>; |
| 99 | |
| 100 | rs9: clock-generator@6a { |
| 101 | compatible = "renesas,9fgv0241"; |
| 102 | reg = <0x6a>; |
| 103 | #clock-cells = <1>; |
| 104 | |
| 105 | clocks = <&ref25m>; |
| 106 | |
| 107 | DIF0 { |
| 108 | renesas,slew-rate = <3000000>; |
| 109 | }; |
| 110 | }; |
| 111 | }; |
| 112 | |
| 113 | ... |