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Date: Fri, 27 Sep 2013 10:40:03 +0800
From: Huang Shijie <b32955@freescale.com>
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To: Sourav Poddar <sourav.poddar@ti.com>
Subject: Re: [PATCHv2] drivers: mtd: devices: Add quad read support.
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Cc: artem.bityutskiy@linux.intel.com, balbi@ti.com, broonie@kernel.org,
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 David Woodhouse <dwmw2@infradead.org>
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=E4=BA=8E 2013=E5=B9=B409=E6=9C=8826=E6=97=A5 19:21, Sourav Poddar =E5=86=
=99=E9=81=93:
> If the pupose of LUT is to just set the dummy cycles, and vf610-twr
> hardware state machine does not have have any other dependency
> on LUT, this patch should work.
Hi Sourav & David:

    The key issue about the vf610-twr is that:
    [0] Use the LUT makes the Quadspi driver more efficiency.
    [1] the vf610-twr needs to know the SPI NOR commands for Page Program=
.
        Why? because the driver can not change the size of write-buffer=20
from 256bytes to the 64byte(TXFIFO SIZE).
    [2] the dummy and other things.

Mark said the Quadspi is not a SPI controller, instead it is a SPI NOR=20
controller, and Mark suggested me
  to rewrite the m25p80.c for the Quadspi.

thanks
Huang Shijie