3 Dec
2014
3 Dec
'14
8:20 p.m.
On Wed, Dec 03, 2014 at 03:18:38PM +0800, Jianqun Xu wrote:
From: Sonny Rao sonnyrao@chromium.org
We need to claim the clock which is driving the codec so that when we enable clock gating, we continue to clock the codec when needed. I make this an optional clock since there might be some applications where we don't need it but can still use the I2S block.
I would expect that the clock for the CODEC should be managed by the CODEC if at all possible - that seems more logical than having the CPU I2S controller request and manage it if it's a separate clock. Why add this to the CPU side driver?
We've not always done this for older systems due to the lack of a usable clock API but that's starting to be addressed.