[alsa-devel] [PATCH 5/6] ASoC: Intel: Skylake: Add ssp clock driver

[Stephen Boyd]

On 09/07, Vinod Koul wrote:
> On Thu, Sep 07, 2017 at 07:59:24PM +0530, Subhransu S. Prusty wrote:
> > From: Jaikrishna Nemallapudi <jaikrishnax.nemallapudi at intel.com>
> > 
> > For certain platforms it is required to start the clocks (mclk/sclk/fs)
> > before the stream start. Example: for few chrome systems, codec needs the
> > mclk/sclk to be enabled early for a successful clock synchronization and
> > for few IVI platforms, clock need to be enabled at boot and should be ON
> > always.
> > 
> > This patch creates virtual clock driver, which allows the machine driver to
> > use the clock interface to send IPCs to DSP to enable/disable the clocks.
> 
> Mark, Michael, Stephen,
> 
> So this one adds a 'virtual' clock driver for audio clocks (mclk, bclk...)
> and we have DSP configuring them.  The SW (driver) sends messages to DSP for
> controlling these clocks, that is why we decided to keep this in ASoC, do
> let us know if that is okay.
> 

I know there's a v2 and I'm replying here but this is fine from
clk perspective. I tend to think of it as a "remote" driver
instead where the clk control is done by a non-linux processor or
"remote" processor, in this case the DSP. I'll ack v2.

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