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

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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>
This commit is contained in:
Miquel Raynal (Schneider Electric) 2026-01-22 16:13:32 +01:00 committed by Mark Brown
parent 453c5d60d8
commit bee085476d
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1 changed files with 4 additions and 0 deletions
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4
drivers/spi/spi-cadence-quadspi.c
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@ -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;