1 Texas Instruments VPIF
2 ----------------------
3
4 The TI Video Port InterFace (VPIF) is the primary component for video
5 capture and display on the DA850/AM18x family of TI DaVinci/Sitara
6 SoCs.
7
8 TI Document reference: SPRUH82C, Chapter 35
9 http://www.ti.com/lit/pdf/spruh82
10
11 Required 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
16 Video Capture:
17
18 VPIF has a 16-bit parallel bus input, supporting 2 8-bit channels or a
19 single 16-bit channel. It should contain one or two port child nodes
20 with child 'endpoint' node. If there are two ports then port@0 must
21 describe the input and port@1 output channels. Please refer to the
22 bindings defined in
23 Documentation/devicetree/bindings/media/video-interfaces.txt.
24
25 Example using 2 8-bit input channels, one of which is connected to an
26 I2C-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
93 Alternatively, an example when the bus is configured as a single
94 16-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 };
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