Hi Wolfgang,
[...]
If we place the driver in your board diretory, the chances are huge it will simply sit there and rot, and the next one who needs something similar will reinvent the wheel because he did not find your copy.
I agree that even very simple and uncomplete implementations can co in if the fulfil some purpose, and can form a basis for future extensions.
I just read through our documentation on the Wiki and found nothing relavant to such a topic. If we make this a requirement, we should add it so people know about it beforehand.
How about amending the U-Boot design principles with
11. Keep It Generic
- Generic code shall be added as high as possible to the U-Boot abstraction hierarchy and only as a last resort into board directories. This entails that peripheral drivers should be put below "drivers" even if they start out supporting only one specific configuration. Note that it is not a requirement for such a first instance to be generic as genericity generally cannot be extrapolated from a single data point.
How does that sound?
Cheers Detlev