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/starfive,jh7110-pll.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: StarFive JH7110 PLL Clock Generator |
| 8 | |
| 9 | description: |
| 10 | These PLLs are high speed, low jitter frequency synthesizers in the JH7110. |
| 11 | Each PLL works in integer mode or fraction mode, with configuration |
| 12 | registers in the sys syscon. So the PLLs node should be a child of |
| 13 | SYS-SYSCON node. |
| 14 | The formula for calculating frequency is |
| 15 | Fvco = Fref * (NI + NF) / M / Q1 |
| 16 | |
| 17 | maintainers: |
| 18 | - Xingyu Wu <xingyu.wu@starfivetech.com> |
| 19 | |
| 20 | properties: |
| 21 | compatible: |
| 22 | const: starfive,jh7110-pll |
| 23 | |
| 24 | clocks: |
| 25 | maxItems: 1 |
| 26 | description: Main Oscillator (24 MHz) |
| 27 | |
| 28 | '#clock-cells': |
| 29 | const: 1 |
| 30 | description: |
| 31 | See <dt-bindings/clock/starfive,jh7110-crg.h> for valid indices. |
| 32 | |
| 33 | required: |
| 34 | - compatible |
| 35 | - clocks |
| 36 | - '#clock-cells' |
| 37 | |
| 38 | additionalProperties: false |
| 39 | |
| 40 | examples: |
| 41 | - | |
| 42 | clock-controller { |
| 43 | compatible = "starfive,jh7110-pll"; |
| 44 | clocks = <&osc>; |
| 45 | #clock-cells = <1>; |
| 46 | }; |