[U-Boot] [PATCH 0/2] Disable hybrid mode for SPANSION S25FS-S family

[Jagan Teki]

On Mon, Oct 30, 2017 at 11:52 AM, Jagan Teki <jagannadh.teki at gmail.com> wrote:
> On Mon, Oct 16, 2017 at 12:54 PM, Rajat Srivastava
> <rajat.srivastava at nxp.com> wrote:
>> The S25FS-S family physical sectors may be configured as a hybrid
>> combination of eight 4-kB parameter sectors at the top or bottom
>> of the address space with all but one of the remaining sectors
>> being uniform size. The default status of the flash is the hybrid
>> architecture.
>>
>> Since the parameter sectors and the uniform sectors have different
>> erase commands, it is a problem to implement erase functionality for
>> hybrid mode in current U-boot code. Also, enabling hybrid mode doesn't
>> provide any significant benefit.
>
> I think I've asked this question before, keeping the state of the
> flash remains same. Can't erase parameter and uniform sectors
> individually during operations like
> - parameter sectors with erase commands (20h or 21h)
> - uniform sectors with erase commands (D8h or DCh)

I understand that even we can do parameter and uniform sectors
individually with the help of offsets we still have 224. Any idea why
we need hybrid mode with this off 244 sector size? if require we can
even write cypress on this case.

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