0001 Texas Instruments VPIF
0002 ----------------------
0003
0004 The TI Video Port InterFace (VPIF) is the primary component for video
0005 capture and display on the DA850/AM18x family of TI DaVinci/Sitara
0006 SoCs.
0007
0008 TI Document reference: SPRUH82C, Chapter 35
0009 http://www.ti.com/lit/pdf/spruh82
0010
0011 Required properties:
0012 - compatible: must be "ti,da850-vpif"
0013 - reg: physical base address and length of the registers set for the device;
0014 - interrupts: should contain IRQ line for the VPIF
0015
0016 Video Capture:
0017
0018 VPIF has a 16-bit parallel bus input, supporting 2 8-bit channels or a
0019 single 16-bit channel. It should contain one or two port child nodes
0020 with child 'endpoint' node. If there are two ports then port@0 must
0021 describe the input and port@1 output channels. Please refer to the
0022 bindings defined in
0023 Documentation/devicetree/bindings/media/video-interfaces.txt.
0024
0025 Example using 2 8-bit input channels, one of which is connected to an
0026 I2C-connected TVP5147 decoder:
0027
0028 vpif: vpif@217000 {
0029 compatible = "ti,da850-vpif";
0030 reg = <0x217000 0x1000>;
0031 interrupts = <92>;
0032
0033 port@0 {
0034 vpif_input_ch0: endpoint@0 {
0035 reg = <0>;
0036 bus-width = <8>;
0037 remote-endpoint = <&composite_in>;
0038 };
0039
0040 vpif_input_ch1: endpoint@1 {
0041 reg = <1>;
0042 bus-width = <8>;
0043 data-shift = <8>;
0044 };
0045 };
0046
0047 port@1 {
0048 vpif_output_ch0: endpoint {
0049 bus-width = <8>;
0050 remote-endpoint = <&composite_out>;
0051 };
0052 };
0053 };
0054
0055 [ ... ]
0056
0057 &i2c0 {
0058
0059 tvp5147@5d {
0060 compatible = "ti,tvp5147";
0061 reg = <0x5d>;
0062
0063 port {
0064 composite_in: endpoint {
0065 hsync-active = <1>;
0066 vsync-active = <1>;
0067 pclk-sample = <0>;
0068
0069 /* VPIF channel 0 (lower 8-bits) */
0070 remote-endpoint = <&vpif_input_ch0>;
0071 bus-width = <8>;
0072 };
0073 };
0074 };
0075
0076 adv7343@2a {
0077 compatible = "adi,adv7343";
0078 reg = <0x2a>;
0079
0080 port {
0081 composite_out: endpoint {
0082 adi,dac-enable = <1 1 1>;
0083 adi,sd-dac-enable = <1>;
0084
0085 remote-endpoint = <&vpif_output_ch0>;
0086 bus-width = <8>;
0087 };
0088 };
0089 };
0090 };
0091
0092
0093 Alternatively, an example when the bus is configured as a single
0094 16-bit input (e.g. for raw-capture mode):
0095
0096 vpif: vpif@217000 {
0097 compatible = "ti,da850-vpif";
0098 reg = <0x217000 0x1000>;
0099 interrupts = <92>;
0100
0101 port {
0102 vpif_ch0: endpoint {
0103 bus-width = <16>;
0104 };
0105 };
0106 };
