The Cadence driver does not support anything else than repeating the
command opcode twice while in octal DTR mode. Make this clear by
checking for this in the ->supports_op() hook.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/spi/spi-cadence-quadspi.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 8f78d1c44663..f59f3a8dccf5 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1537,6 +1537,10 @@ static bool cqspi_supports_mem_op(struct spi_mem *mem,
return false;
if (op->data.nbytes && op->data.buswidth != 8)
return false;
+
+ /* A single opcode is supported, it will be repeated */
+ if ((op->cmd.opcode >> 8) != (op->cmd.opcode & 0xFF))
+ return false;
} else if (!all_false) {
/* Mixed DTR modes are not supported. */
return false;
--
2.51.1