[PATCH v1 1/5] dmaengine: arm-dma350: Fix source trigger bit

From: Jelly Jia

Date: Sun Sep 06 2026 - 23:36:12 EST


CH_CTRL_USESRCTRIGIN is the source trigger enable bit in CH_CTRL and
must use bit 25, not bit 26 which is the destination trigger enable bit
(CH_CTRL_USEDESTRIGIN).

The constant has no users yet, but enabling the source trigger input
would silently enable the destination trigger input instead, breaking
any transfer that waits for a peripheral request. Fix it before the
first user arrives.

Fixes: 5d099706449d ("dmaengine: Add Arm DMA-350 driver")
Signed-off-by: Jelly Jia <Jelly.Jia@xxxxxxxxxxx>
---
drivers/dma/arm-dma350.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/arm-dma350.c b/drivers/dma/arm-dma350.c
index 09403aca8bb0..4e17130de6c8 100644
--- a/drivers/dma/arm-dma350.c
+++ b/drivers/dma/arm-dma350.c
@@ -63,7 +63,7 @@

#define CH_CTRL 0x0c
#define CH_CTRL_USEDESTRIGIN BIT(26)
-#define CH_CTRL_USESRCTRIGIN BIT(26)
+#define CH_CTRL_USESRCTRIGIN BIT(25)
#define CH_CTRL_DONETYPE GENMASK(23, 21)
#define CH_CTRL_REGRELOADTYPE GENMASK(20, 18)
#define CH_CTRL_XTYPE GENMASK(11, 9)
--
2.54.0