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

[Michael Trimarchi]

Hi

On Sat, Aug 6, 2016 at 5:08 PM, Jagan Teki <jagannadh.teki at gmail.com> wrote:
> 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?

1) correct
2) I need to check

If we send this command we just remap it in the same way

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



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| Michael Nazzareno Trimarchi                     Amarula Solutions BV |
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