On Wed, 14 Jun 2023 08:01:39 +0200, Symbolic Debugger wrote: > > I could not find the changes and UMP source files on https://github.com/torvalds/linux/tree/master/sound, is that correct ? > I am trying to build a kernel with UMP support for testing UMP on a custom made development board. All MIDI 2.0 stuff will be merged to 6.5 kernel. Currently it's found in linux-next or sound.git subsystem tree. In sound.git tree, you can find some branches for the use on older kernels, too (topic/midi20, topic/midi20-6.1.y, topic/midi20-5.15.y, topic/midi20-5.10.y, topic/midi20-5.4.y). Takashi