dmaengine: fsl-edma: fix eDMAv4 channel allocation issue

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The eDMAv4 channel mux has a limitation where certain requests must use
even channels, while others must use odd numbers.

Add two flags (ARGS_EVEN_CH and ARGS_ODD_CH) to reflect this limitation.
The device tree source (dts) files need to be updated accordingly.

This issue was identified by the following commit:
commit a725990557 ("arm64: dts: imx93: Fix the dmas entries order")

Reverting channel orders triggered this problem.

Fixes: 72f5801a4e ("dmaengine: fsl-edma: integrate v3 support")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231114154824.3617255-2-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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This commit is contained in:

Frank Li 2023-11-14 10:48:21 -05:00 • committed by Vinod Koul

parent f60dfe0c56

commit dc51b4442d

1 changed files with 8 additions and 0 deletions

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8

drivers/dma/fsl-edma-main.c

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