[U-Boot] [PATCH v2 19/22] sf: params: Add S25FS256S_64K spi flash support

Jagan Teki jteki at openedev.com
Tue Aug 9 22:08:37 CEST 2016


Add Spansion S25FS256S_64K spi flash to the list of spi_flash_ids.

In spansion S25FS-S family the physical sectors are grouped as
normal and parameter sectors. Parameter sectors are 4kB in size
with 8 set located at the bottom or top address of a device.
Normal sectors are similar to other flash family with sizes of
64kB or 32 kB.

To erase whole flash using sector erase(D8h or DCh) won't effect
the parameter sectors, so in order to erase these we must use 4K
sector erase commands (20h or 21h) separately.

So better to erase the whole flash using 4K sector erase instead
of detecting these family parts again and do two different erase
operations.

Cc: Yunhui Cui <yunhui.cui at nxp.com>
Cc: Simon Glass <sjg at chromium.org>
Cc: Bin Meng <bmeng.cn at gmail.com>
Cc: York Sun <york.sun at nxp.com>
Cc: Vignesh R <vigneshr at ti.com>
Cc: Mugunthan V N <mugunthanvnm at ti.com>
Cc: Michal Simek <michal.simek at xilinx.com>
Cc: Michael Trimarchi <michael at amarulasolutions.com>
Cc: Siva Durga Prasad Paladugu <sivadur at xilinx.com>
Signed-off-by: Jagan Teki <jteki at openedev.com>
---
 drivers/mtd/spi/sf_params.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/spi/sf_params.c b/drivers/mtd/spi/sf_params.c
index 344d9c9..b029c76 100644
--- a/drivers/mtd/spi/sf_params.c
+++ b/drivers/mtd/spi/sf_params.c
@@ -93,6 +93,7 @@ const struct spi_flash_info spi_flash_ids[] = {
 	{"S25FL128S_64K",  INFO(0x012018, 0x4d01,  64 * 1024,   256, RD_FULL | WR_QPP) },
 	{"S25FL256S_256K", INFO(0x010219, 0x4d00, 256 * 1024,   128, RD_FULL | WR_QPP) },
 	{"S25FL256S_64K",  INFO(0x010219, 0x4d01,  64 * 1024,   512, RD_FULL | WR_QPP) },
+	{"S25FS256S_64K",  INFO6(0x010219, 0x4d0181, 64 * 1024, 512, RD_FULL | WR_QPP | SECT_4K) },
 	{"S25FS512S",      INFO(0x010220, 0x4D00, 128 * 1024,   512, RD_FULL | WR_QPP) },
 	{"S25FL512S_256K", INFO(0x010220, 0x4d00, 256 * 1024,   256, RD_FULL | WR_QPP) },
 	{"S25FL512S_64K",  INFO(0x010220, 0x4d01,  64 * 1024,  1024, RD_FULL | WR_QPP) },
-- 
2.7.4



More information about the U-Boot mailing list