On Mon, Jul 22, 2013 at 06:26:20PM +0200, Lucas Stach wrote: > Am Montag, den 22.07.2013, 10:46 +0100 schrieb Mark Brown: > > On Mon, Jul 22, 2013 at 09:08:47AM +0200, Lucas Stach wrote: > > > The clocks used by the Tegra ASoC utils were defined in the machine > > > driver DT node for all boards, as this is were they get requested by the > > > I2C and SPDIF Tegra audio drivers. Differently from those two the AC97 > > Why is the way the other devices are doing this sensible? > Because they only need those clocks when actually playing audio, so > requesting them late in the process when loading the machine driver is > perfectly fine for them. The AC97 controller however already needs those > clocks when initializing the controller and codec, so it has to request > them earlier. But why does it make sense to do that? The clocks are directly connected to the IP blocks in hardware after all..
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