Lines Matching full:dma

1 Keystone Navigator DMA Controller
3 This document explains the device tree bindings for the packet dma
4 on keystone devices. The Keystone Navigator DMA driver sets up the dma
8 CRYPTO Engines etc has its own instance of dma hardware. QMSS has also
9 an internal packet DMA module which is used as an infrastructure DMA
12 Navigator DMA cloud layout:
17 		|-> DMA instance #0
19 		|-> DMA instance #1
23 		|-> DMA instance #n
25 Navigator DMA properties:
27  - compatible: Should be "ti,keystone-navigator-dma"
28  - clocks: phandle to dma instances clocks. The clock handles can be as
29 	many as the dma instances. The order should be maintained as per
30 	the dma instances.
34 	into DMA and the DMA uses it as the physical addresses to reach queue
36 	they are relevant only from DMA perspective. The QMSS may not choose to
40 DMA instance properties:
42  - reg: Should contain register location and length of the following dma
46 	- Tx DMA channel configuration register region (txchan).
47 	- Rx DMA channel configuration register region (rxchan).
48 	- Tx DMA channel Scheduler configuration register region (txsched).
49 	- Rx DMA flow configuration register region (rxflow).
53  - ti,enable-all: Enable all DMA channels vs clients opening specific channels
59  - ti,rx-retry-timeout: Number of dma cycles to wait before retry on buffer
65 		compatible = "ti,keystone-navigator-dma";
94 Navigator DMA client:
96  - ti,navigator-dmas: List of one or more DMA specifiers, each consisting of
97 			- A phandle pointing to DMA instance node
98 			- A DMA channel number as a phandle arg.
99  - ti,navigator-dma-names: Contains dma channel name for each DMA specifier in
109 		ti,navigator-dma-names = "netrx0", "netrx1", "nettx";