ti,da850-vpif.txt

  1Texas Instruments VPIF
  2----------------------
  3
  4The TI Video Port InterFace (VPIF) is the primary component for video
  5capture and display on the DA850/AM18x family of TI DaVinci/Sitara
  6SoCs.
  7
  8TI Document reference: SPRUH82C, Chapter 35
  9http://www.ti.com/lit/pdf/spruh82
 10
 11Required properties:
 12- compatible: must be "ti,da850-vpif"
 13- reg: physical base address and length of the registers set for the device;
 14- interrupts: should contain IRQ line for the VPIF
 15
 16Video Capture:
 17
 18VPIF has a 16-bit parallel bus input, supporting 2 8-bit channels or a
 19single 16-bit channel. It should contain one or two port child nodes
 20with child 'endpoint' node. If there are two ports then port@0 must
 21describe the input and port@1 output channels. Please refer to the
 22bindings defined in
 23Documentation/devicetree/bindings/media/video-interfaces.txt.
 24
 25Example using 2 8-bit input channels, one of which is connected to an
 26I2C-connected TVP5147 decoder:
 27
 28	vpif: vpif@217000 {
 29		compatible = "ti,da850-vpif";
 30		reg = <0x217000 0x1000>;
 31		interrupts = <92>;
 32
 33		port@0 {
 34			vpif_input_ch0: endpoint@0 {
 35				reg = <0>;
 36				bus-width = <8>;
 37				remote-endpoint = <&composite_in>;
 38			};
 39
 40			vpif_input_ch1: endpoint@1 {
 41				reg = <1>;
 42				bus-width = <8>;
 43				data-shift = <8>;
 44			};
 45		};
 46
 47		port@1 {
 48			vpif_output_ch0: endpoint {
 49				bus-width = <8>;
 50				remote-endpoint = <&composite_out>;
 51			};
 52		};
 53	};
 54
 55[ ... ]
 56
 57&i2c0 {
 58
 59	tvp5147@5d {
 60		compatible = "ti,tvp5147";
 61		reg = <0x5d>;
 62
 63		port {
 64			composite_in: endpoint {
 65				hsync-active = <1>;
 66				vsync-active = <1>;
 67				pclk-sample = <0>;
 68
 69				/* VPIF channel 0 (lower 8-bits) */
 70				remote-endpoint = <&vpif_input_ch0>;
 71				bus-width = <8>;
 72			};
 73		};
 74	};
 75
 76	adv7343@2a {
 77		compatible = "adi,adv7343";
 78		reg = <0x2a>;
 79
 80		port {
 81			composite_out: endpoint {
 82				adi,dac-enable = <1 1 1>;
 83				adi,sd-dac-enable = <1>;
 84
 85				remote-endpoint = <&vpif_output_ch0>;
 86				bus-width = <8>;
 87			};
 88		};
 89	};
 90};
 91
 92
 93Alternatively, an example when the bus is configured as a single
 9416-bit input (e.g. for raw-capture mode):
 95
 96	vpif: vpif@217000 {
 97		compatible = "ti,da850-vpif";
 98		reg = <0x217000 0x1000>;
 99		interrupts = <92>;
100
101		port {
102			vpif_ch0: endpoint {
103				  bus-width = <16>;
104			};
105		};
106	};