Re: [PATCH RFC 2/2] mfd: add Renesas RPC-IF driver

[masonccyang@xxxxxxxxxxx]

Hello, 

> Re: [PATCH RFC 2/2] mfd: add Renesas RPC-IF driver
> 
> On 06/19/2019 10:54 AM, Lee Jones wrote:
> 
> >>>>> Looks like a flash device to me.
> >>>>
> >>>>    More like a multi-protocol flash controller, with the real flash 

> >>>> chip connected to it.
> >>>
> >>> Right, this has been my point from the start.
> >>>
> >>> It's a flash controller.  Sure, you can access it in different ways,
> 
>    No, the software access will be the same, just the initial controler
> setup will be somewhat different depending on the flash type used...
> 
> >>> but it's still *just* a flash controller and thus not a true MFD.
> 
>    Also a SPI controller when a SPI bus is used.


Cypress has announced the inclusion of Cypress’ high-bandwidth 
HyperBus™ 8-bit serial memory interface into the new eXpanded SPI (xSPI) 
electrical interface standard from the JEDEC Solid State Technology 
Association 

for detail, please goes to
https://www.cypress.com/news/cypress-hyperbus-memory-interface-instant-applications-incorporated-jedec-xspi-electrical 


As mentioned before that HyperFlash is a kind of standard NOR Flash with 
high-speed SPI interface.

thanks & best regards,
Mason

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