On 18:17, Marek Vasut wrote:
> On 7/21/25 2:03 PM, Prasanth Mantena wrote:
>
> Hi,
>
> > > diff --git a/drivers/mtd/spi/spi-nor-ids.c b/drivers/mtd/spi/spi-nor-ids.c
> > > index e7e97780d7c..0383175beb5 100644
> > > --- a/drivers/mtd/spi/spi-nor-ids.c
> > > +++ b/drivers/mtd/spi/spi-nor-ids.c
> > > @@ -591,6 +591,7 @@ const struct flash_info spi_nor_ids[] = {
> > > { INFO("w25m512jw", 0xef6119, 0, 64 * 1024, 1024, SECT_4K |
> > > SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
> > > { INFO("w25m512jv", 0xef7119, 0, 64 * 1024, 1024, SECT_4K |
> > > SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
> > > { INFO("w25h02jv", 0xef9022, 0, 64 * 1024, 4096, SECT_4K |
> > > SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
> > > + { INFO("w77q51nw", 0xef8a1a, 0, 64 * 1024, 1024, SECT_4K |
> > > SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
> >
> > Hi Marek,
> >
> > Is there a place where we can refer to the datasheet.
>
> Please ask Winbond .
>
> > According to commit message, Its similar flash part W25Q512NWM seems
> > to have 4Byte address mode but capability is not seen in the code [0].
> > Is this some limitation that goes with this flash as well.
> >
> > [0]
> > https://elixir.bootlin.com/u-boot/v2025.07/source/drivers/mtd/spi/spi-nor-ids.c#L553
> W25Q512NWM should be updated with SPI_NOR_4B_OPCODES too, that's for
> separate patch, but someone would have to test such patch on that flash.
Understood.
Thanks,
Prasanth
