lkml.org 
[lkml]   [2019]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v7 1/2] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller driver
On Wed, 30 Jan 2019 08:15:25 +0100
Marek Vasut <marek.vasut@gmail.com> wrote:

> >> > So far as I know that HF is provided by Cypress only and
> >> > any mass production product use the component which is provided by only
> >> > one provider
> >> > will be a big risk.
> >> >
> >> > Compare to HF, there are more provider of SPI/Octa could support the
> >> > mass production product
> >> > as their second provider.
> >> >
> >> > In addition, from the technical points of view, mx25uw51245g is more
> >> > powerful than HF and
> >> > good for complicate user application, i.e., OTA and so on.
> >>
> >> Did you consider protocol overhead too ? I don't think you can compare
> >> them just by raw numbers of pins and bus frequency.
> >>
> >> Note that over-the-air update (if that's what you mean by OTA) is
> >> completely separate from the underlying storage device.
> >
> > It's key feature of mx25uw51245g supports Read-while-Write capability
> > that allows read access from one memory bank while writing to another
> > memory bank.
>
> Note that this sales pitch is rather off-topic.
>

Fully agree with Marek on that point. The discussion is about
supporting both HF and SPI-MEM modes (or, at least have a plan to
support HF at some point) not figuring out which option is better.

\
 
 \ /
  Last update: 2019-01-30 10:28    [W:0.045 / U:6.356 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site