Wolfgang Denk wrote:
Without this patch, audio support on the P1022DS is completely broken.
We don't have audio support in U-Boot, do we?
But we do have P1022DS board support, and my understanding is that part of the function of U-Boot is to prepare the board so that it can be used by Linux, or whatever OS it boots.
Besides, there's tons of hardware that is not supported by U-Boot but must be initialized by U-Boot anyway.
Once there was a good old tradition that a driver in an OS makes sure to initialize the hardware as it needs it for reliable operation. I think I remember to have seen this requested for Linux drivers not so long ago.
Well, now we're talking about a very old issue that always raises disagreement -- exactly what should U-Boot be doing vs. Linux. And this is something that changes over time. For example, QE pin muxing used to be done in U-Boot, but now it's done in Linux. Well, except for the QE features that U-Boot uses. In that case, it's done in U-Boot *and* Linux.