[U-Boot] [PATCH v2 03/16] sf: Add extended addr write support for winbond|stmicro
Jagannadha Sutradharudu Teki
jagannadha.sutradharudu-teki at xilinx.com
Fri May 31 14:52:16 CEST 2013
This patch provides support to program a flash extended address
register for winbond and stmicro SPI flashes.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna at 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
--
1.8.3
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