From: Zhiqiang Hou
> Sent: 07 April 2016 04:17
...
> > Is there a reason specific to 85xx to have a different default than every
> > other
> > platform except lpc18xx? The description of MTD_SPI_NOR_USE_4K_SECTORS
> > acknowledges that erase speed is a tradeoff. Why is that concern more
> > compelling on 85xx than elsewhere?
> >
>
> I don't want to specify 85xx, but configs of fsl. I'm still confusing about
> so many
> configs. Will add other platforms if necessary.
>
> For this patch, it takes about 13 mins to erase 64MiB by subsector erase
> command
> (4KiB per time), but takes 2 mins by sector erase command(64KiB per time). It
> is
> conspicuous decrease. Why it uses the 4KiB granularity by default, what's the
> benefit?
Should it be doing 64K erases followed by 0 to 15 4K erases for any final
fragment?
David
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