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

Marek Vasut marex at denx.de
Wed Sep 25 19:05:47 CEST 2024


On 9/11/24 1:05 PM, Marek Vasut wrote:
> 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 ?

Is there any progress on this ?


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