Re: [PATCH] ASoC: rt5659: Add mclk controls

[Nicolin Chen <nicoleotsuka@gmail.com>]

On Thu, Jul 28, 2016 at 07:55:10PM +0100, Mark Brown wrote:
> > > This device seems to be used on x86 systems so we'll need to ensure that
> > > they register clocks for this.  They really should set this up using
> > > quirks keyed off DMI information or similar so it's hidden from other
> > > systems.
> 
> > Hmm..the change defines this mclk as a optional property so I'm
> > not sure how it would affect x86 systems. (Would love to refine
> 
> Ah, clk_prepare_enable() silently ignores NULL as an argument?  It is a
> bit messy to do things that way but might be the most practical thing.

At least the one in the drivers/clk/clk.c does:

660 int clk_prepare(struct clk *clk)
661 {
662         int ret;
663
664         if (!clk)
665                 return 0;
...
774 int clk_enable(struct clk *clk)
775 {
776         unsigned long flags;
777         int ret;
778
779         if (!clk)
780                 return 0;

> Hopefully they'll speak up - we're in the merge window anyway so it'll
> be just over a week before this can go into -next.

I see. Let's wait then.

Thanks
Nicolin