On Wed, 23 May 2018 16:49:35 +0200, Guenter Roeck wrote:
On Wed, May 23, 2018 at 6:56 AM Takashi Iwai tiwai@suse.de wrote:
My point was a bit different: distributions like Gallium start without the relevant topology files and UCM settings, and we should have a reference to quickly enable audio without having to borrow and modify files from another distro. I faced this issue when I worked with the Gallium folks to enable audio on Rambi and Cyan Chromebooks and ended-up creating this reference myself.
This sounds rather like a question how the upstream distributes the stuff properly...
Not really, or not only. My problem, in particular, is that I want (need) to be able to run different kernel versions with the same distribution, and I want to be able to swap kernel versions without having to update the root file system. That doesn't work if I have to use v4 configuration files for v4.4 and older kernels, and v5 configuration files for v4.9 and later kernels (besides, as I mentioned, that the v5 configuration files I found were all incomplete). In my opinion, thre should be exactly one configuration file for a given device, and there should be no need for users (or distributions) to hunt for the correct version of the file.
No doubt about the kernel backward compatibility, it should be supported.
It's another problem, though, that downstream takes some wild stuff without properly upstreaming. A known story everywhere.
Takashi