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[media] dt-bindings: add TI VPIF documentation

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Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Kevin Hilman 2016-12-07 16:30:24 -02:00 committed by Mauro Carvalho Chehab
parent 62dd4acd0b
commit faa3185114
1 changed files with 83 additions and 0 deletions
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Documentation/devicetree/bindings/media/ti,da850-vpif.txt Normal file
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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>;
};
};
};