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SubjectRe: [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings
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On 6/6/19 9:40 AM, masonccyang@mxic.com.tw 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

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