56f13c0d95
DMA routers are transparent devices used to mux DMA requests from peripherals to DMA controllers. They are used when the SoC integrates more devices with DMA requests then their controller can handle. DRA7x is one example of such SoC, where the sDMA can hanlde 128 DMA request lines, but in SoC level it has 205 DMA requests. The of_dma_router will be registered as of_dma_controller with special xlate function and additional parameters. The driver for the router is responsible to craft the dma_spec (in the of_dma_route_allocate callback) which can be used to requests a DMA channel from the real DMA controller. This way the router can be transparent for the system while remaining generic enough to be used in different environments. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> |
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| .. | ||
| bindings | ||
| 00-INDEX | ||
| booting-without-of.txt | ||
| changesets.txt | ||
| dynamic-resolution-notes.txt | ||
| of_unittest.txt | ||
| overlay-notes.txt | ||
| todo.txt | ||
| usage-model.txt | ||