Dear Mark, Liam reviewed this patch.(Thank you for your review.) The upstream kernel include i2s CPU drivers excepts for i2sv5 CPU driver. I should upgrade existing i2s CPU drivers to support i2s operation for sound on Aquila board, becuase the sound driver on Aquila board to need i2sv5 CPU driver. I have a question. After upgrading existing i2s CPU drivers to run sound on Aquila board, Should I post this patch to upstream kernel? Or, Now, I post this patch which haven't used i2sv5 CPU driver to upstream kernel. Then, I will implement it and post incremental patch using it to run on Aquila board. Could you give me the opinion about this question? Thank you, Chanwoo Choi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel