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1* Renesas "Type-AXI" NBPFAXI* DMA controllers2 3* DMA controller4 5Required properties6 7- compatible: must be one of8 "renesas,nbpfaxi64dmac1b4"9 "renesas,nbpfaxi64dmac1b8"10 "renesas,nbpfaxi64dmac1b16"11 "renesas,nbpfaxi64dmac4b4"12 "renesas,nbpfaxi64dmac4b8"13 "renesas,nbpfaxi64dmac4b16"14 "renesas,nbpfaxi64dmac8b4"15 "renesas,nbpfaxi64dmac8b8"16 "renesas,nbpfaxi64dmac8b16"17- #dma-cells: must be 2: the first integer is a terminal number, to which this18 slave is connected, the second one is flags. Flags is a bitmask19 with the following bits defined:20 21#define NBPF_SLAVE_RQ_HIGH 122#define NBPF_SLAVE_RQ_LOW 223#define NBPF_SLAVE_RQ_LEVEL 424 25Optional properties:26- max-burst-mem-read: limit burst size for memory reads27 (DMA_MEM_TO_MEM/DMA_MEM_TO_DEV) to this value, specified in bytes, rather28 than using the maximum burst size allowed by the hardware's buffer size.29- max-burst-mem-write: limit burst size for memory writes30 (DMA_DEV_TO_MEM/DMA_MEM_TO_MEM) to this value, specified in bytes, rather31 than using the maximum burst size allowed by the hardware's buffer size.32 If both max-burst-mem-read and max-burst-mem-write are set, DMA_MEM_TO_MEM33 will use the lower value.34 35You can use dma-channels and dma-requests as described in dma.txt, although they36won't be used, this information is derived from the compatibility string.37 38Example:39 40 dma: dma-controller@48000000 {41 compatible = "renesas,nbpfaxi64dmac8b4";42 reg = <0x48000000 0x400>;43 interrupts = <0 12 0x444 0 13 0x445 0 14 0x446 0 15 0x447 0 16 0x448 0 17 0x449 0 18 0x450 0 19 0x4>;51 #dma-cells = <2>;52 dma-channels = <8>;53 dma-requests = <8>;54 };55 56* DMA client57 58Required properties:59 60dmas and dma-names are required, as described in dma.txt.61 62Example:63 64#include <dt-bindings/dma/nbpfaxi.h>65 66...67 dmas = <&dma 0 (NBPF_SLAVE_RQ_HIGH | NBPF_SLAVE_RQ_LEVEL)68 &dma 1 (NBPF_SLAVE_RQ_HIGH | NBPF_SLAVE_RQ_LEVEL)>;69 dma-names = "rx", "tx";70