[PATCH] mtd: spi-nor-ids: Add support for Winbond W77Q51NW

[Marek Vasut]

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.