Re: [PATCH 0/2] Graph fixes for using multiple endpoints per port

From: Kuninori Morimoto
Date: Tue Dec 11 2018 - 18:16:41 EST

Hi Tony

> The issue I have with that it does not then follow the binding doc :)
> See this part in Documentation/devicetree/bindings/graph.txt:
> "If a single port is connected to more than one remote device, an
> 'endpoint' child node must be provided for each link."
> Isn't the I2C TDM case the same as "single port connecected to
> more than one remote device" rather than multiple ports?
> To me it seems we're currently only handling the multiple ports
> case, and not multiple endpoints for a port. Other than fixing
> that, things should work just as earlier with my two patches.
> That is unless I accidentally broke something.
> So just trying to correct the binding usage. Or am I missing
> something?

I'm not 100% sure your "I2C TDM case", but you can check
multi-endpoint sample on "Example: Multi DAI with DPCM" below.
"pcm3168a" is using multi-endpoint.
Does this help you ?

Best regards
Kuninori Morimoto