xlnx,video.txt (1402B)
1Xilinx Video IP Pipeline (VIPP) 2------------------------------- 3 4General concept 5--------------- 6 7Xilinx video IP pipeline processes video streams through one or more Xilinx 8video IP cores. Each video IP core is represented as documented in video.txt 9and IP core specific documentation, xlnx,v-*.txt, in this directory. The DT 10node of the VIPP represents as a top level node of the pipeline and defines 11mappings between DMAs and the video IP cores. 12 13Required properties: 14 15- compatible: Must be "xlnx,video". 16 17- dmas, dma-names: List of one DMA specifier and identifier string (as defined 18 in Documentation/devicetree/bindings/dma/dma.txt) per port. Each port 19 requires a DMA channel with the identifier string set to "port" followed by 20 the port index. 21 22- ports: Video port, using the DT bindings defined in ../video-interfaces.txt. 23 24Required port properties: 25 26- direction: should be either "input" or "output" depending on the direction 27 of stream. 28 29Example: 30 31 video_cap { 32 compatible = "xlnx,video"; 33 dmas = <&vdma_1 1>, <&vdma_3 1>; 34 dma-names = "port0", "port1"; 35 36 ports { 37 #address-cells = <1>; 38 #size-cells = <0>; 39 40 port@0 { 41 reg = <0>; 42 direction = "input"; 43 vcap0_in0: endpoint { 44 remote-endpoint = <&scaler0_out>; 45 }; 46 }; 47 port@1 { 48 reg = <1>; 49 direction = "input"; 50 vcap0_in1: endpoint { 51 remote-endpoint = <&switch_out1>; 52 }; 53 }; 54 }; 55 };