[PATCHv2] drivers: mtd: devices: Add quad read support.

Huang Shijie b32955 at freescale.com
Thu Sep 26 22:40:03 EDT 2013


于 2013年09月26日 19:21, Sourav Poddar 写道:
> 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 
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 
controller, and Mark suggested me
  to rewrite the m25p80.c for the Quadspi.

thanks
Huang Shijie





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