[PATCH 21/30] mtd: spi-nor: winbond: W25Q128JV-M: Add quad page program capability

[Miquel Raynal]

This chip does not advertise it correctly but it supports 1-1-4 page
programs, add the flag manually:

Before:

$ flash_speed /dev/mtd0 -d -c10
eraseblock write speed is 553 KiB/s
page write speed is 548 KiB/s
2 page write speed is 550 KiB/s

After:

$ flash_speed /dev/mtd0 -c10 -d
eraseblock write speed is 1628 KiB/s
page write speed is 1600 KiB/s
2 page write speed is 1612 KiB/s

Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5  spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
e30cacd4f9d230b2fc4ae12851797332d9baf8456520872161f79379c80ea2b0  spi_read
e30cacd4f9d230b2fc4ae12851797332d9baf8456520872161f79379c80ea2b0  spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5  spi_read
e30cacd4f9d230b2fc4ae12851797332d9baf8456520872161f79379c80ea2b0  spi_test
---
 drivers/mtd/spi-nor/winbond.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 3715e269cb7f..695e1b2fddf5 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -302,7 +302,7 @@ static const struct flash_info winbond_nor_parts[] = {
 	}, {
 		/* W25Q128JV-M */
 		.id = SNOR_ID(0xef, 0x70, 0x18),
-		.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
+		.flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
 	}, {
 		/* W25Q256JV-M */
 		.id = SNOR_ID(0xef, 0x70, 0x19),

-- 
2.53.0