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cfi_flash: Add optional config register write to cfi-detection

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This patch adds the possibility to (optinally) write to the
flash configuration register. The Intel style CFI chips support
such a register that can be used to configure the operation
mode to a non-default value.

This method will be used by the t3corp board, which needs to
configure the DS617 Xilinx flash for async read mode.

Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Stefan Roese
2010-10-25 18:31:48 +02:00
parent 4d2ca9d6a0
commit 6f726f9584
2 changed files with 45 additions and 0 deletions
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2
include/mtd/cfi_flash.h
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@@ -32,6 +32,8 @@
#define FLASH_CMD_ERASE_CONFIRM 0xD0
#define FLASH_CMD_WRITE 0x40
#define FLASH_CMD_PROTECT 0x60
#define FLASH_CMD_SETUP 0x60
#define FLASH_CMD_SET_CR_CONFIRM 0x03
#define FLASH_CMD_PROTECT_SET 0x01
#define FLASH_CMD_PROTECT_CLEAR 0xD0
#define FLASH_CMD_CLEAR_STATUS 0x50