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Merge branch 'dt2' of git://github.com/hzhuang1/linux into next/dt
From Haojian Zhuang: * 'dt2' of git://github.com/hzhuang1/linux: ARM: dt: mmp-dma: add binding file
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* MARVELL MMP DMA controller | ||
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Marvell Peripheral DMA Controller | ||
Used platfroms: pxa688, pxa910, pxa3xx, etc | ||
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Required properties: | ||
- compatible: Should be "marvell,pdma-1.0" | ||
- reg: Should contain DMA registers location and length. | ||
- interrupts: Either contain all of the per-channel DMA interrupts | ||
or one irq for pdma device | ||
- #dma-channels: Number of DMA channels supported by the controller. | ||
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"marvell,pdma-1.0" | ||
Used platfroms: pxa25x, pxa27x, pxa3xx, pxa93x, pxa168, pxa910, pxa688. | ||
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Examples: | ||
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/* | ||
* Each channel has specific irq | ||
* ICU parse out irq channel from ICU register, | ||
* while DMA controller may not able to distinguish the irq channel | ||
* Using this method, interrupt-parent is required as demuxer | ||
* For example, pxa688 icu register 0x128, bit 0~15 is PDMA channel irq, | ||
* 18~21 is ADMA irq | ||
*/ | ||
pdma: dma-controller@d4000000 { | ||
compatible = "marvell,pdma-1.0"; | ||
reg = <0xd4000000 0x10000>; | ||
interrupts = <0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15>; | ||
interrupt-parent = <&intcmux32>; | ||
#dma-channels = <16>; | ||
}; | ||
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/* | ||
* One irq for all channels | ||
* Dmaengine driver (DMA controller) distinguish irq channel via | ||
* parsing internal register | ||
*/ | ||
pdma: dma-controller@d4000000 { | ||
compatible = "marvell,pdma-1.0"; | ||
reg = <0xd4000000 0x10000>; | ||
interrupts = <47>; | ||
#dma-channels = <16>; | ||
}; | ||
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Marvell Two Channel DMA Controller used specifically for audio | ||
Used platfroms: pxa688, pxa910 | ||
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Required properties: | ||
- compatible: Should be "marvell,adma-1.0" or "marvell,pxa910-squ" | ||
- reg: Should contain DMA registers location and length. | ||
- interrupts: Either contain all of the per-channel DMA interrupts | ||
or one irq for dma device | ||
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"marvell,adma-1.0" used on pxa688 | ||
"marvell,pxa910-squ" used on pxa910 | ||
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Examples: | ||
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/* each channel has specific irq */ | ||
adma0: dma-controller@d42a0800 { | ||
compatible = "marvell,adma-1.0"; | ||
reg = <0xd42a0800 0x100>; | ||
interrupts = <18 19>; | ||
interrupt-parent = <&intcmux32>; | ||
}; | ||
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/* One irq for all channels */ | ||
squ: dma-controller@d42a0800 { | ||
compatible = "marvell,pxa910-squ"; | ||
reg = <0xd42a0800 0x100>; | ||
interrupts = <46>; | ||
}; |