[PATCH 0/7] dma: fsl/mcf-edma: Bug fixes and enhancements for ColdFire support

Jean-Michel Hautbois
2025-11-24T12:50:33Z

This series addresses several bugs in the fsl-edma and mcf-edma drivers
affecting MCF54418 ColdFire processors.

Patch 1 adds a write barrier after TCD descriptor fill to ensure proper
memory ordering.

Patch 2 adds the FSL_EDMA_DRV_MCF flag to fix byte-lane addressing for
MCF54418.

Patch 3 adds per-channel IRQ naming for easier debugging.

Patches 4-6 fix the interrupt and error handlers for all 64 DMA
channels:
- Patch 4 fixes the interrupt handler to process all 64 channels
- Patch 5 moves the error handler out of the header file for clarity
- Patch 6 fixes the error handler for all 64 channels with proper types

Patch 7 adds source stride support for interleaved DMA transfers,
enabling memory access patterns where source samples are not contiguous.

Tested on a custom MCF54418-based platform with slave DMA transfers.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>
---
Jean-Michel Hautbois (7):
dma: fsl-edma: Add write barrier after TCD descriptor fill
dma: fsl-edma: Add FSL_EDMA_DRV_MCF flag for ColdFire eDMA
dma: mcf-edma: Add per-channel IRQ naming for debugging
dma: mcf-edma: Fix interrupt handler for 64 DMA channels
dma: fsl-edma: Move error handler out of header file
dma: mcf-edma: Fix error handler for all 64 DMA channels
dma: fsl-edma: Support source stride for interleaved DMA transfers

drivers/dma/fsl-edma-common.c | 14 +++++++++
drivers/dma/fsl-edma-common.h | 11 ++++----
drivers/dma/mcf-edma-main.c | 66 +++++++++++++++++++++++++------------------
3 files changed, 57 insertions(+), 34 deletions(-)
---
base-commit: d13f3ac64efb868d09cb2726b1e84929afe90235
change-id: 20251123-dma-coldfire-5f36aee143b3

Best regards,
--
Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>