| Texas Instruments VPIF |
| ---------------------- |
| |
| The TI Video Port InterFace (VPIF) is the primary component for video |
| capture and display on the DA850/AM18x family of TI DaVinci/Sitara |
| SoCs. |
| |
| TI Document reference: SPRUH82C, Chapter 35 |
| http://www.ti.com/lit/pdf/spruh82 |
| |
| Required properties: |
| - compatible: must be "ti,da850-vpif" |
| - reg: physical base address and length of the registers set for the device; |
| - interrupts: should contain IRQ line for the VPIF |
| |
| Video Capture: |
| |
| VPIF has a 16-bit parallel bus input, supporting 2 8-bit channels or a |
| single 16-bit channel. It should contain at least one port child node |
| with child 'endpoint' node. Please refer to the bindings defined in |
| Documentation/devicetree/bindings/media/video-interfaces.txt. |
| |
| Example using 2 8-bit input channels, one of which is connected to an |
| I2C-connected TVP5147 decoder: |
| |
| vpif: vpif@217000 { |
| compatible = "ti,da850-vpif"; |
| reg = <0x217000 0x1000>; |
| interrupts = <92>; |
| |
| port { |
| vpif_ch0: endpoint@0 { |
| reg = <0>; |
| bus-width = <8>; |
| remote-endpoint = <&composite>; |
| }; |
| |
| vpif_ch1: endpoint@1 { |
| reg = <1>; |
| bus-width = <8>; |
| data-shift = <8>; |
| }; |
| }; |
| }; |
| |
| [ ... ] |
| |
| &i2c0 { |
| |
| tvp5147@5d { |
| compatible = "ti,tvp5147"; |
| reg = <0x5d>; |
| status = "okay"; |
| |
| port { |
| composite: endpoint { |
| hsync-active = <1>; |
| vsync-active = <1>; |
| pclk-sample = <0>; |
| |
| /* VPIF channel 0 (lower 8-bits) */ |
| remote-endpoint = <&vpif_ch0>; |
| bus-width = <8>; |
| }; |
| }; |
| }; |
| }; |
| |
| |
| Alternatively, an example when the bus is configured as a single |
| 16-bit input (e.g. for raw-capture mode): |
| |
| vpif: vpif@217000 { |
| compatible = "ti,da850-vpif"; |
| reg = <0x217000 0x1000>; |
| interrupts = <92>; |
| |
| port { |
| vpif_ch0: endpoint { |
| bus-width = <16>; |
| }; |
| }; |
| }; |