Re: [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings

[Marek Vasut]

On 6/6/19 9:40 AM, masonccyang@xxxxxxxxxxx wrote:
[...]

> RPC-IF works either in SPI or HyperFlash is decided by external hardware 
> pins 
> configuration and it can NOT switch it's operation mode in the run time. 
> This is not like my understanding of MFD.

Which external hardware pins decide the RPC configuration ?

It seems to me like PHYCNT register, PHYMEM bitfield, selects what
device is connected, and then a couple of other bits control the
communication, but I see nothing which would be tied to any external
configuration pins.

[...]

-- 
Best regards,
Marek Vasut