[PATCH] mtd: spi-nor: Clear Winbond SR3 WPS bit on boot

Marek Vasut marex at denx.de
Wed Sep 11 13:05:50 CEST 2024


On 8/30/24 3:36 PM, Jagan Teki wrote:
> On Sun, Aug 25, 2024 at 5:58 AM Marek Vasut <marex at denx.de> wrote:
>>
>> On 5/24/24 6:05 PM, Jagan Teki wrote:
>>> On Mon, Mar 4, 2024 at 9:46 PM Marek Vasut <marex at denx.de> wrote:
>>>>
>>>> Some Winbond SPI NORs have special SR3 register which is
>>>> used among other things to control whether non-standard
>>>> "Individual Block/Sector Write Protection" (WPS bit)
>>>> locking scheme is activated. This non-standard locking
>>>> scheme is not supported by either U-Boot or Linux SPI
>>>> NOR stack so make sure it is disabled, otherwise the
>>>> SPI NOR may appear locked for no obvious reason.
>>>>
>>>> This SR3 WPS appears e.g. on W25Q16FW which has the same ID as
>>>> W25Q16DW, but the W25Q16DW does not implement the SR3 WPS bit.
>>>>
>>>> Signed-off-by: Marek Vasut <marex at denx.de>
>>>> ---
>>>
>>> Applied to u-boot-spi/master
>>
>> I do not see this patch in u-boot/master , was it missed ?
> 
> I missed it, I will send it as part of PR soon.
Is there a PR now ?


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