Unverified Commit bee08547 authored Jan 22, 2026 by Miquel Raynal (Schneider Electric) Committed by Mark Brown Jan 28, 2026

spi: cadence-qspi: Make sure we filter out unsupported ops



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.

Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Miquel Raynal (Schneider Electric) <miquel.raynal@bootlin.com>
Tested-by: Santhosh Kumar K <s-k6@ti.com>
Link: https://patch.msgid.link/20260122-schneider-6-19-rc1-qspi-v4-7-f9c21419a3e6@bootlin.com


Signed-off-by: Mark Brown <broonie@kernel.org>

parent 453c5d60

drivers/spi/spi-cadence-quadspi.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1531,6 +1531,10 @@ 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;