1* MARVELL MMP DMA controller 2 3Marvell Peripheral DMA Controller 4Used platforms: pxa688, pxa910, pxa3xx, etc 5 6Required properties: 7- compatible: Should be "marvell,pdma-1.0" 8- reg: Should contain DMA registers location and length. 9- interrupts: Either contain all of the per-channel DMA interrupts 10 or one irq for pdma device 11 12Optional properties: 13- #dma-channels: Number of DMA channels supported by the controller (defaults 14 to 32 when not specified) 15- #dma-requests: Number of DMA requestor lines supported by the controller 16 (defaults to 32 when not specified) 17 18"marvell,pdma-1.0" 19Used platforms: pxa25x, pxa27x, pxa3xx, pxa93x, pxa168, pxa910, pxa688. 20 21Examples: 22 23/* 24 * Each channel has specific irq 25 * ICU parse out irq channel from ICU register, 26 * while DMA controller may not able to distinguish the irq channel 27 * Using this method, interrupt-parent is required as demuxer 28 * For example, pxa688 icu register 0x128, bit 0~15 is PDMA channel irq, 29 * 18~21 is ADMA irq 30 */ 31pdma: dma-controller@d4000000 { 32 compatible = "marvell,pdma-1.0"; 33 reg = <0xd4000000 0x10000>; 34 interrupts = <0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15>; 35 interrupt-parent = <&intcmux32>; 36 #dma-channels = <16>; 37 }; 38 39/* 40 * One irq for all channels 41 * Dmaengine driver (DMA controller) distinguish irq channel via 42 * parsing internal register 43 */ 44pdma: dma-controller@d4000000 { 45 compatible = "marvell,pdma-1.0"; 46 reg = <0xd4000000 0x10000>; 47 interrupts = <47>; 48 #dma-channels = <16>; 49 }; 50 51 52Marvell Two Channel DMA Controller used specifically for audio 53Used platforms: pxa688, pxa910 54 55Required properties: 56- compatible: Should be "marvell,adma-1.0" or "marvell,pxa910-squ" 57- reg: Should contain DMA registers location and length. 58- interrupts: Either contain all of the per-channel DMA interrupts 59 or one irq for dma device 60 61"marvell,adma-1.0" used on pxa688 62"marvell,pxa910-squ" used on pxa910 63 64Examples: 65 66/* each channel has specific irq */ 67adma0: dma-controller@d42a0800 { 68 compatible = "marvell,adma-1.0"; 69 reg = <0xd42a0800 0x100>; 70 interrupts = <18 19>; 71 interrupt-parent = <&intcmux32>; 72 }; 73 74/* One irq for all channels */ 75squ: dma-controller@d42a0800 { 76 compatible = "marvell,pxa910-squ"; 77 reg = <0xd42a0800 0x100>; 78 interrupts = <46>; 79 }; 80