1NXP Layerscape SoC qDMA Controller 2================================== 3 4This device follows the generic DMA bindings defined in dma/dma.txt. 5 6Required properties: 7 8- compatible: Must be one of 9 "fsl,ls1021a-qdma": for LS1021A Board 10 "fsl,ls1028a-qdma": for LS1028A Board 11 "fsl,ls1043a-qdma": for ls1043A Board 12 "fsl,ls1046a-qdma": for ls1046A Board 13- reg: Should contain the register's base address and length. 14- interrupts: Should contain a reference to the interrupt used by this 15 device. 16- interrupt-names: Should contain interrupt names: 17 "qdma-queue0": the block0 interrupt 18 "qdma-queue1": the block1 interrupt 19 "qdma-queue2": the block2 interrupt 20 "qdma-queue3": the block3 interrupt 21 "qdma-error": the error interrupt 22- fsl,dma-queues: Should contain number of queues supported. 23- dma-channels: Number of DMA channels supported 24- block-number: the virtual block number 25- block-offset: the offset of different virtual block 26- status-sizes: status queue size of per virtual block 27- queue-sizes: command queue size of per virtual block, the size number 28 based on queues 29 30Optional properties: 31 32- dma-channels: Number of DMA channels supported by the controller. 33- big-endian: If present registers and hardware scatter/gather descriptors 34 of the qDMA are implemented in big endian mode, otherwise in little 35 mode. 36 37Examples: 38 39 qdma: dma-controller@8390000 { 40 compatible = "fsl,ls1021a-qdma"; 41 reg = <0x0 0x8388000 0x0 0x1000>, /* Controller regs */ 42 <0x0 0x8389000 0x0 0x1000>, /* Status regs */ 43 <0x0 0x838a000 0x0 0x2000>; /* Block regs */ 44 interrupts = <GIC_SPI 185 IRQ_TYPE_LEVEL_HIGH>, 45 <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>, 46 <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>; 47 interrupt-names = "qdma-error", 48 "qdma-queue0", "qdma-queue1"; 49 dma-channels = <8>; 50 block-number = <2>; 51 block-offset = <0x1000>; 52 fsl,dma-queues = <2>; 53 status-sizes = <64>; 54 queue-sizes = <64 64>; 55 big-endian; 56 }; 57 58DMA clients must use the format described in dma/dma.txt file. 59