[PATCH v3 3/9] ASoC: rockchip: i2s: add support for grabbing output clock to codec

[Mark Brown]

On Fri, Jan 15, 2016 at 09:49:50PM +0800, Caesar Wang wrote:

> 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.

> - As the perious discuss on https://patchwork.kernel.org/patch/5427131/,
>   I think Mark likes do it in codec driver, I have to say I agree this
>   patch in here since that's the i2s block output. I don't know if the
>   Mark has changed his mind.

If the I2S block is providing a clock to the CODEC then that's what the
software should do so that the CODEC can gate and ungate the clock as
required.  This patch has the I2S block using a clock, not providing
one.
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