This patch provides support to program a flash extended address register for winbond and stmicro SPI flashes.

Signed-off-by: Jagannadha Sutradharudu Teki jaganna@xilinx.com --- Changes for v2: - none

drivers/mtd/spi/spi_flash.c | 2 ++ drivers/mtd/spi/spi_flash_internal.h | 1 + 2 files changed, 3 insertions(+)

diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 193de42..05d1792 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -286,6 +286,8 @@ int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel) idcode0 = flash->idcode0; if (idcode0 == 0x01) { cmd = CMD_BANKADDR_BRWR; + } else if ((idcode0 == 0xef) || (idcode0 == 0x20)) { + cmd = CMD_EXTNADDR_WREAR; } else { printf("SF: Unsupported bank addr write %02x\n", idcode0); return -1; diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h index 2567bbc..de1a0df 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -31,6 +31,7 @@ /* Bank addr acess commands */ #define CMD_BANKADDR_BRWR 0x17 #define CMD_BANKADDR_BRRD 0x16 +#define CMD_EXTNADDR_WREAR 0xC5

/* Common status */ #define STATUS_WIP 0x01