| Shawn Guo | b496dfb | 2012-09-05 01:09:12 +0200 | [diff] [blame] | 1 | * Generic OPP Interface |
| 2 | |
| 3 | SoCs have a standard set of tuples consisting of frequency and |
| 4 | voltage pairs that the device will support per voltage domain. These |
| 5 | are called Operating Performance Points or OPPs. |
| 6 | |
| 7 | Properties: |
| 8 | - operating-points: An array of 2-tuples items, and each item consists |
| 9 | of frequency and voltage like <freq-kHz vol-uV>. |
| 10 | freq: clock frequency in kHz |
| 11 | vol: voltage in microvolt |
| 12 | |
| 13 | Examples: |
| 14 | |
| 15 | cpu@0 { |
| 16 | compatible = "arm,cortex-a9"; |
| 17 | reg = <0>; |
| 18 | next-level-cache = <&L2>; |
| 19 | operating-points = < |
| 20 | /* kHz uV */ |
| 21 | 792000 1100000 |
| 22 | 396000 950000 |
| 23 | 198000 850000 |
| 24 | >; |
| 25 | }; |