diff options
| author | Pratyush Yadav <p.yadav@ti.com> | 2020-10-05 17:31:29 +0200 |
|---|---|---|
| committer | Vignesh Raghavendra <vigneshr@ti.com> | 2020-11-09 07:26:16 +0100 |
| commit | 6c6a2b2b8ed6dd1ad1a318afd1035777a73936e0 (patch) | |
| tree | 076af3ca5195393310000cc2de689ea8ca385bed /drivers/mtd | |
| parent | mtd: spi-nor: sfdp: parse xSPI Profile 1.0 table (diff) | |
| download | linux-6c6a2b2b8ed6dd1ad1a318afd1035777a73936e0.tar.xz linux-6c6a2b2b8ed6dd1ad1a318afd1035777a73936e0.zip | |
mtd: spi-nor: core: use dummy cycle and address width info from SFDP
The xSPI Profile 1.0 table specifies how many dummy cycles and address
bytes are needed for the Read Status Register command in octal DTR mode.
Use that information to send the correct Read SR command.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-7-p.yadav@ti.com
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/core.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index fea619802825..d63dfd7d4b31 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -385,6 +385,11 @@ static int spi_nor_read_sr(struct spi_nor *nor, u8 *sr) SPI_MEM_OP_NO_DUMMY, SPI_MEM_OP_DATA_IN(1, sr, 0)); + if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) { + op.addr.nbytes = nor->params->rdsr_addr_nbytes; + op.dummy.nbytes = nor->params->rdsr_dummy; + } + spi_nor_spimem_setup_op(nor, &op, nor->reg_proto); ret = spi_mem_exec_op(nor->spimem, &op); @@ -418,6 +423,11 @@ static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr) SPI_MEM_OP_NO_DUMMY, SPI_MEM_OP_DATA_IN(1, fsr, 0)); + if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) { + op.addr.nbytes = nor->params->rdsr_addr_nbytes; + op.dummy.nbytes = nor->params->rdsr_dummy; + } + spi_nor_spimem_setup_op(nor, &op, nor->reg_proto); ret = spi_mem_exec_op(nor->spimem, &op); |