diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/devices/st_spi_fsm.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index 40eb830eea21..f86d3e01433b 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -1164,12 +1164,27 @@ static int stfsm_mx25_config(struct stfsm *fsm) CFG_ERASESEC_TOGGLE_32BIT_ADDR); } - /* For QUAD mode, set 'QE' STATUS bit */ + /* Check status of 'QE' bit */ + stfsm_read_status(fsm, FLASH_CMD_RDSR, &sta); data_pads = ((fsm->stfsm_seq_read.seq_cfg >> 16) & 0x3) + 1; if (data_pads == 4) { - stfsm_read_status(fsm, FLASH_CMD_RDSR, &sta); - sta |= MX25_STATUS_QE; - stfsm_write_status(fsm, sta, 1); + if (!(sta & MX25_STATUS_QE)) { + /* Set 'QE' */ + sta |= MX25_STATUS_QE; + + stfsm_write_status(fsm, sta, 1); + + stfsm_wait_busy(fsm); + } + } else { + if (sta & MX25_STATUS_QE) { + /* Clear 'QE' */ + sta &= ~MX25_STATUS_QE; + + stfsm_write_status(fsm, sta, 1); + + stfsm_wait_busy(fsm); + } } return 0; |
