From bee085476d277e1f993cdec57e3c730f536594f0 Mon Sep 17 00:00:00 2001 From: "Miquel Raynal (Schneider Electric)" Date: Thu, 22 Jan 2026 16:13:32 +0100 Subject: [PATCH] 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 Tested-by: Wolfram Sang Signed-off-by: Miquel Raynal (Schneider Electric) Tested-by: Santhosh Kumar K Link: https://patch.msgid.link/20260122-schneider-6-19-rc1-qspi-v4-7-f9c21419a3e6@bootlin.com Signed-off-by: Mark Brown --- 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 a8437d9c37a79..38518475858da 100644 --- a/drivers/spi/spi-cadence-quadspi.c +++ b/drivers/spi/spi-cadence-quadspi.c @@ -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; -- 2.47.3