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The DMA IP of Sophgo CV18XX/SG200X is based on a DW AXI CORE, with an additional channel remap register located in the top system control area. The DMA channel is exclusive to each core. In addition, the DMA multiplexer is a subdevice of system controller, so this binding only contains necessary properties for the multiplexer itself. Add the dmamux binding for CV18XX/SG200X series SoC. Signed-off-by: Inochi Amaoto <inochiama@gmail.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20250611081000.1187374-2-inochiama@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>