diff options
| author | Haibo Chen <haibo.chen@nxp.com> | 2025-09-17 15:27:08 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-09-18 22:26:50 +0100 |
| commit | 3c1000e15fd0eb387fcca420c9fb36ae07887782 (patch) | |
| tree | a79278fc3ab692c088124ed24814ce8c84c0d89d | |
| parent | a9888b3222ec73d055447a39cf9a0118f67497f4 (diff) | |
spi: spi-nxp-fspi: Add the DDR LUT command support
For DTR mode, flexspi need to use DDR LUT command, flexspi will switch
to DDR mode when detect the DDR LUT command.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20250917-flexspi-ddr-v2-3-bb9fe2a01889@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/spi/spi-nxp-fspi.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c index a1c9ad033796..bd61f951d6be 100644 --- a/drivers/spi/spi-nxp-fspi.c +++ b/drivers/spi/spi-nxp-fspi.c @@ -559,12 +559,21 @@ static void nxp_fspi_prepare_lut(struct nxp_fspi *f, u32 target_lut_reg; /* cmd */ - lutval[0] |= LUT_DEF(0, LUT_CMD, LUT_PAD(op->cmd.buswidth), - op->cmd.opcode); + if (op->cmd.dtr) { + lutval[0] |= LUT_DEF(0, LUT_CMD_DDR, LUT_PAD(op->cmd.buswidth), + op->cmd.opcode >> 8); + lutval[lutidx / 2] |= LUT_DEF(lutidx, LUT_CMD_DDR, + LUT_PAD(op->cmd.buswidth), + op->cmd.opcode & 0xFF); + lutidx++; + } else { + lutval[0] |= LUT_DEF(0, LUT_CMD, LUT_PAD(op->cmd.buswidth), + op->cmd.opcode); + } /* addr bytes */ if (op->addr.nbytes) { - lutval[lutidx / 2] |= LUT_DEF(lutidx, LUT_ADDR, + lutval[lutidx / 2] |= LUT_DEF(lutidx, op->addr.dtr ? LUT_ADDR_DDR : LUT_ADDR, LUT_PAD(op->addr.buswidth), op->addr.nbytes * 8); lutidx++; @@ -572,7 +581,7 @@ static void nxp_fspi_prepare_lut(struct nxp_fspi *f, /* dummy bytes, if needed */ if (op->dummy.nbytes) { - lutval[lutidx / 2] |= LUT_DEF(lutidx, LUT_DUMMY, + lutval[lutidx / 2] |= LUT_DEF(lutidx, op->dummy.dtr ? LUT_DUMMY_DDR : LUT_DUMMY, /* * Due to FlexSPI controller limitation number of PAD for dummy * buswidth needs to be programmed as equal to data buswidth. @@ -587,7 +596,8 @@ static void nxp_fspi_prepare_lut(struct nxp_fspi *f, if (op->data.nbytes) { lutval[lutidx / 2] |= LUT_DEF(lutidx, op->data.dir == SPI_MEM_DATA_IN ? - LUT_NXP_READ : LUT_NXP_WRITE, + (op->data.dtr ? LUT_READ_DDR : LUT_NXP_READ) : + (op->data.dtr ? LUT_WRITE_DDR : LUT_NXP_WRITE), LUT_PAD(op->data.buswidth), 0); lutidx++; |