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2025-07-10 15:03:48 deseven: notice about ec fw version, info on fine-tuning power draw
Guides/Power-Mode-and-Fan-Control.md ..
@@ 15,6 15,11 @@
- change current power mode
- read current APU temperature
+ :::info
+ # Note
+ The module was tested on EC firmware version 1.06 and should theoretically only work on versions 1.04 and above
+ :::
+
#### Generic Installation
1. Install module building dependencies (depends on your distro, on debian should be `build-essential` and `linux-headers` packages).
2. Clone the repo with `git clone https://github.com/cmetz/ec-su_axb35-linux.git`.
@@ 66,5 71,27 @@
Curves are being applied only when `curve` mode is set on a specific fan, each fan has their own curves.
+ ### Fine-tuning Power Limits
+ If you want more gradual control over power modes, there's a [RyzenAdj](https://github.com/FlyGoat/RyzenAdj) utility.
+
+ Main 3 parameters we are interested in are:
+ - `STAPM LIMIT` (sustained power draw)
+ - `PPT LIMIT FAST` (boost power draw)
+ - `PPT LIMIT SLOW` (average power draw)
+
+ Default values on all 3 selectable power modes (use `ryzenadj --info` to read them):
+
+ | Power Mode | STAPM LIMIT | PPT LIMIT FAST | PPT LIMIT SLOW |
+ | ----------- | ----------- | -------------- | -------------- |
+ | Quiet | 54.0 | 100.0 | 54.0 |
+ | Balanced | 85.0 | 120.0 | 120.0 |
+ | Performance | 120.0 | 140.0 | 120.0 |
+
+ Example on setting the power limit to static 100W with no boost:
+ `ryzenadj --stapm-limit=100000 --fast-limit=100000 --slow-limit=100000`
+
+ **Note that changing the power mode via the EC controller (using `ec-su_axb35-linux` or otherwise) resets these values to their defaults.**
+
### Relevant Pages
- [[Guides/Hardware-Monitoring]]
+ - [[Guides/Hardware-Monitoring]]
+ - [[Guides/Power-Modes-and-Performance]]
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