[U-Boot] [PATCH] sf: Disable 4-KB erase command for SPANSION S25FS128

[Jagan Teki]

On 6 August 2016 at 20:10, Michael Trimarchi
<michael at amarulasolutions.com> wrote:
>>>>
>>>> I understand your point but I don't have enough part number and I can only to
>>>> test on this one. I will verify this patch too and put my review and drop my
>>>> personal one. Anyway can you ask if the first 0x8000 are considered by boot
>>>> rom? I'm trying to boot from qspi an imx7d board and I create the parameter
>>>> using the files/qspi-nor-spansion-s25fl128s-config but not sure if I need to flash
>>>> from 0x400 or from 0x8400. And then I think that bootloader should go from
>>>> 0x1000 or from 0x9000 correct?
>>>> Then from BOOT_FROM I choose qspi but what is the DEFAULT_ADDRESS
>>>> 0x1000 or 0x400?
>>>>
>>
>> Don't understand either does this "Disable 4-KB erase command for
>> SPANSION S25FS-S family" (spansion_s25fss_disable_4KB_erase) is an
>> issue workaround or something like hybrid configuration feature for
>> spansion parts?
>>
>
> Please refer here.

Thanks for the pdf, So the lower 8 4k sectors are unaffected even if
we do sector erase(d8h)? What if we do 4k erase(20h) whole flash all
effected?

thanks!
-- 
Jagan Teki
Free Software Engineer | www.openedev.com
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.