[U-Boot] [PATCH v5 18/18] sf_probe: Extend the SPI NOR protection for SST flashes

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <fabio.estevam@freescale.com>

SST flashes have a similar SPI NOR protection scheme as STMICRO, so 
add support for it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
Changes since v4:
- None. Newly introduced in this version

 drivers/mtd/spi/sf_internal.h | 1 +
 drivers/mtd/spi/sf_probe.c    | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h
index db46aa8..214ceaa 100644
--- a/drivers/mtd/spi/sf_internal.h
+++ b/drivers/mtd/spi/sf_internal.h
@@ -63,6 +63,7 @@ enum spi_nor_option_flags {
 /* CFI Manufacture ID's */
 #define SPI_FLASH_CFI_MFR_SPANSION	0x01
 #define SPI_FLASH_CFI_MFR_STMICRO	0x20
+#define SPI_FLASH_CFI_MFR_SST		0xbf
 #define SPI_FLASH_CFI_MFR_MACRONIX	0xc2
 #define SPI_FLASH_CFI_MFR_WINBOND	0xef
 
diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
index 3626433..8a736c4 100644
--- a/drivers/mtd/spi/sf_probe.c
+++ b/drivers/mtd/spi/sf_probe.c
@@ -140,7 +140,8 @@ int static is_stm(struct spi_slave *spi, struct spi_flash *flash)
 	if (ret < 0)
 		return ret;
 
-	if (idcode[0] == SPI_FLASH_CFI_MFR_STMICRO)
+	if (idcode[0] == SPI_FLASH_CFI_MFR_STMICRO ||
+	    idcode[0] == SPI_FLASH_CFI_MFR_SST)
 		return 1;
 	else
 		return 0;
-- 
1.9.1