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>
---
drivers/spi/spi-nxp-fspi.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c
index a1c9ad03379682dc1fc2908fbd83e1ae8e91588f..bd61f951d6befdb78cdd84d4531aab378a47c56f 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++;
--
2.34.1