[alsa-devel] [PATCH 2/3] ASoC: simple-card: make sysclk index configurable

[Daniel Mack]

On Thursday, May 31, 2018 07:02 PM, Rob Herring wrote:
> On Tue, May 29, 2018 at 10:23:48PM +0200, Daniel Mack wrote:

>> If that's the case, could you depict how the DT bindings should look like by
>> example?
> 
> In clock providers, you just add #clock-cells. Then the consumer side
> defines 'clocks'. Which clock(s) comes from the dai is defined by the
> index in the 'clocks' property for that node.
> 
> Both ends can be providers, but who is active is determined by defining
> the actual connections with 'clocks'. Or perhaps you have both
> directions shown and there is some other means to select which one is
> active such as solving for who can provide the desired freq.

How about entities that are a clock producer and consume their clocks 
themselves? That's a rather typical thing for DAIs. Is that expressible 
in DT?


Thanks,
Daniel