diff options
Diffstat (limited to 'drivers/mtd/devices/st_spi_fsm.c')
| -rw-r--r-- | drivers/mtd/devices/st_spi_fsm.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index 6be2672..06e6a52 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -389,6 +389,28 @@ static struct stfsm_seq stfsm_seq_read_jedec = { SEQ_CFG_STARTSEQ), }; +static struct stfsm_seq stfsm_seq_erase_sector = { + /* 'addr_cfg' configured during initialisation */ + .seq_opc = { + (SEQ_OPC_PADS_1 | SEQ_OPC_CYCLES(8) | + SEQ_OPC_OPCODE(FLASH_CMD_WREN) | SEQ_OPC_CSDEASSERT), + + (SEQ_OPC_PADS_1 | SEQ_OPC_CYCLES(8) | + SEQ_OPC_OPCODE(FLASH_CMD_SE)), + }, + .seq = { + STFSM_INST_CMD1, + STFSM_INST_CMD2, + STFSM_INST_ADD1, + STFSM_INST_ADD2, + STFSM_INST_STOP, + }, + .seq_cfg = (SEQ_CFG_PADS_1 | + SEQ_CFG_READNOTWRITE | + SEQ_CFG_CSDEASSERT | + SEQ_CFG_STARTSEQ), +}; + static inline int stfsm_is_idle(struct stfsm *fsm) { return readl(fsm->base + SPI_FAST_SEQ_STA) & 0x10; @@ -477,6 +499,19 @@ static void stfsm_read_fifo(struct stfsm *fsm, uint32_t *buf, } } +/* Configure 'addr_cfg' according to addressing mode */ +static void stfsm_prepare_erasesec_seq(struct stfsm *fsm, + struct stfsm_seq *seq) +{ + int addr1_cycles = fsm->info->flags & FLASH_FLAG_32BIT_ADDR ? 16 : 8; + + seq->addr_cfg = (ADR_CFG_CYCLES_ADD1(addr1_cycles) | + ADR_CFG_PADS_1_ADD1 | + ADR_CFG_CYCLES_ADD2(16) | + ADR_CFG_PADS_1_ADD2 | + ADR_CFG_CSDEASSERT_ADD2); +} + /* Search for preferred configuration based on available flags */ static struct seq_rw_config * stfsm_search_seq_rw_configs(struct stfsm *fsm, |
