diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/cfi_flash.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index df04a425e2..8a5babea7b 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -544,7 +544,16 @@ static int flash_is_busy (flash_info_t * info, flash_sect_t sect) #ifdef CONFIG_FLASH_CFI_LEGACY case CFI_CMDSET_AMD_LEGACY: #endif - retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE); + if (info->sr_supported) { + flash_write_cmd (info, sect, info->addr_unlock1, + FLASH_CMD_READ_STATUS); + retval = !flash_isset (info, sect, 0, + FLASH_STATUS_DONE); + } else { + retval = flash_toggle (info, sect, 0, + AMD_STATUS_TOGGLE); + } + break; default: retval = 0; @@ -1685,6 +1694,7 @@ static void cmdset_amd_read_jedec_ids(flash_info_t *info) { ushort bankId = 0; uchar manuId; + uchar lsbits; flash_write_cmd(info, 0, 0, AMD_CMD_RESET); flash_unlock_seq(info, 0); @@ -1700,6 +1710,9 @@ static void cmdset_amd_read_jedec_ids(flash_info_t *info) } info->manufacturer_id = manuId; + lsbits = flash_read_uchar(info, FLASH_OFFSET_LOWER_SW_BITS); + info->sr_supported = lsbits & BIT(0); + switch (info->chipwidth){ case FLASH_CFI_8BIT: info->device_id = flash_read_uchar (info, |