diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 6a778014ff60..376abef43530 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -294,7 +294,7 @@ static unsigned int cqspi_calc_dummy(const struct spi_mem_op *op)
 {
 	unsigned int dummy_clk;
 
-	dummy_clk = op->dummy.nbytes * 8;
+	dummy_clk = op->dummy.nbytes * (8 / op->dummy.buswidth);
 
 	return dummy_clk;
 }