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Hi Harry,

Le 22/06/2017 à 14:53, Harry Chou a écrit :
> It's an 8 MiB flash with 4 KiB erase sectors.
>
> Signed-off-by: Harry Chou <HarryYC.Chou@gmail.com>
> ---
> drivers/mtd/spi-nor/spi-nor.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
> index dea8c9c..1f84765 100644
> --- a/drivers/mtd/spi-nor/spi-nor.c
> +++ b/drivers/mtd/spi-nor/spi-nor.c
> @@ -1076,6 +1076,7 @@ static const struct flash_info spi_nor_ids[] = {
> { "s25fl164k", INFO(0x014017, 0, 64 * 1024, 128, SECT_4K) },
> { "s25fl204k", INFO(0x014013, 0, 64 * 1024, 8, SECT_4K | SPI_NOR_DUAL_READ) },
> { "s25fl208k", INFO(0x014014, 0, 64 * 1024, 16, SECT_4K | SPI_NOR_DUAL_READ) },
> + { "s25fl064l", INFO(0x016017, 0, 64 * 1024, 128, SECT_4K) },
>

According to the Cypress datasheet, this memory part number supports
Fast Read:
- Dual Output (SPI 1-1-2)
- Dual I/O (SPI 1-2-2)
- Quad Output (SPI 1-1-4)
- Quad I/O (SPI 1-4-4)

http://www.cypress.com/file/316661/download


So you should also add the 2 flags SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ
in addition to SECT_4K and also the flag SPI_NOR_4B_OPCODES since
this part number also supports the 4-byte address instruction set.

Best regards,

Cyrille


> /* SST -- large erase sizes are "overlays", "sectors" are 4K */
> { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) },
>

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