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So split to two ioread32\iowrite32. It needs read at least twice to avoid lower 32 bit part wrap during read up 32bit part. first 2 patch is prepare, No function change. 3rd patch is dt-bind doc 4rd patch is actuall support TCD64 Frank Li (5): dmaengine: fsl-edma: involve help macro fsl_edma_set(get)_tcd() dmaengine: fsl-edma: add address for channel mux register in fsl_edma_chan dmaengine: mcf-edma: force type conversion for TCD pointer dt-bindings: fsl-dma: fsl-edma: add fsl,imx95-edma5 compatible string dmaengine: fsl-edma: integrate TCD64 support for i.MX95 .../devicetree/bindings/dma/fsl,edma.yaml | 2 + drivers/dma/fsl-edma-common.c | 101 +++++++------ drivers/dma/fsl-edma-common.h | 134 ++++++++++++++++-- drivers/dma/fsl-edma-main.c | 17 +++ drivers/dma/mcf-edma-main.c | 2 +- 5 files changed, 198 insertions(+), 58 deletions(-) -- 2.34.1