Hi Ulf, This patchset adds support for using a single DMA channel for both RX and TX operations, instead of using separate DMA channels for each operation. As some older Ingenic SoCs offer only a handful of DMA channels, supporting bi-directional channels allow more hardware to use the channels that would otherwise be used for the MMC/SD operation. Note that the Device Tree binding for the DMA controller has been updated in a (already merged) patchset, so that it accepts a 3 cells (#dma-cells == 3) instead of just 2. It was merged in the DMA tree, so I am not sure the autobuilders will like this YAML - but it was checked without errors. I also removed the descriptions of the "dmas" property in the YAML, as they really weren't adding anything and were getting in my way. There are patches touching the driver file merged in the PM tree (the ones that use the new PM macros) but I expect no problem here, they touch different parts of the file. Cheers, -Paul Paul Cercueil (2): dt-bindings: mmc: ingenic: Support using bi-directional DMA channel mmc: jz4740: Support using a bi-directional DMA channel .../devicetree/bindings/mmc/ingenic,mmc.yaml | 37 ++++++++++++++++--- drivers/mmc/host/jz4740_mmc.c | 19 +++++++++- 2 files changed, 48 insertions(+), 8 deletions(-) -- 2.34.1
