arch/arm64/imx9: Clear edma4 mux conf before set

Warm boot might fail if edma4 channel mux is not written to default value Signed-off-by: Jouni Ukkonen <[email protected]>
tiiuae · Nov 4, 2024 · f50087e · f50087e
1 parent 41be91d
commit f50087e
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/arch/arm64/src/imx9/imx9_edma.c b/arch/arm64/src/imx9/imx9_edma.c
@@ -976,6 +976,13 @@ DMACH_HANDLE imx9_dmach_alloc(uint16_t dmamux, uint8_t dchpri)
 
       putreg32(EDMA_CH_INT, base + IMX9_EDMA_CH_INT_OFFSET);
 
+      /* Set reset value first to CH MUX */
+
+      if (imx9_edma_tcdhasmux(dmach->base))
+      {
+        putreg8(0, base + IMX9_EDMA_CH_MUX_OFFSET);
+      }
+
       /* Set the DMAMUX source */
 
       if (imx9_edma_tcdhasmux(dmach->base))