[PATCH 0/4] mtd: spi-nor: add a new framework for SPI NOR
Marek Vasut
marex at denx.de
Wed Nov 27 05:06:09 EST 2013
Dear Sourav Poddar,
> Dear Marek Vasut, Huang,
>
> On Wednesday 27 November 2013 02:57 PM, Marek Vasut wrote:
> > Dear Huang Shijie,
> >
> >> 1.) Why add a new framework for SPI NOR?
> >>
> >> The SPI-NOR controller such as Freescale's Quadspi controller is
> >> working in a different way from the SPI bus. It should knows the NOR
> >> commands to find the right LUT sequence. Unfortunately, the current
> >> code can not meet this requirement.
> >
> > Is there any kind of documentation for this controller available? I
> > cannot quite understand how this controller works and why can it not be
> > used with our current infrastructure.
>
> I do have a similar requirement where my controller need to be configured
> from slave info. I have submiited a series in the mtd list adding that
> portion
> of handling such cases. Here, is the patch which specific to m25p80 part.
> http://patchwork.ozlabs.org/patch/294285/
>
> The whole series can be found here:
> https://www.mail-archive.com/linux-omap@vger.kernel.org/msg98691.html
Is this TI QSPI the same thing as the Altera QSPI controller please ?
Otherwise, I seriously believe you and Huang should work on a common
infrastructure. I would first like to understand how is the controller in DRA7xx
different from regular SPI controller though. Is there any kind of documentation
I could study please?
Best regards,
Marek Vasut
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