This patch set adds document the devicetree bindings for MediaTek Command-Queue DMA controller, and remove redundant queue structure, add dma-channel-mask for DMA capability and fix compatible. Changes since v3: - fix dt_binding_check errors Changes since v2: - add devicetree bindings for MediaTek Command-Queue DMA controller Changes since v1: - remove redundant queue structure - fix wrong description and tags in the earlier patch - add dma-channel-mask for DMA capability - fix compatible for common