The TVP5150/1 decoders support different video input sources to their
AIP1A/B pins.
Possible configurations are as follows:
- Analog Composite signal connected to AIP1A.
- Analog Composite signal connected to AIP1B.
- Analog S-Video Y (luminance) and C (chrominance)
signals connected to AIP1A and AIP1B respectively.
This patch extends the device tree bindings documentation to describe
how the input connectors for these devices should be defined in a DT.
Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
Changelog:
v3:
- remove examples for one and two inputs
- replace space by tabs
v2:
- adapt port layout in accordance with
https://www.spinics.net/lists/linux-media/msg138546.html with the
svideo-connector deviation (use only one endpoint)
.../devicetree/bindings/media/i2c/tvp5150.txt | 92 +++++++++++++++++--
1 file changed, 85 insertions(+), 7 deletions(-)
diff --git a/Documentation/devicetree/bindings/media/i2c/tvp5150.txt b/Documentation/devicetree/bindings/media/i2c/tvp5150.txt
index 8c0fc1a26bf0..bdd273d8b44d 100644
--- a/Documentation/devicetree/bindings/media/i2c/tvp5150.txt
+++ b/Documentation/devicetree/bindings/media/i2c/tvp5150.txt
@@ -12,11 +12,31 @@ Optional Properties:
- pdn-gpios: phandle for the GPIO connected to the PDN pin, if any.
- reset-gpios: phandle for the GPIO connected to the RESETB pin, if any.
-The device node must contain one 'port' child node for its digital output
-video port, in accordance with the video interface bindings defined in
-Documentation/devicetree/bindings/media/video-interfaces.txt.
+The device node must contain one 'port' child node per device physical input
+and output port, in accordance with the video interface bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt. The port nodes
+are numbered as follows
-Required Endpoint Properties for parallel synchronization:
+ Name Type Port
+ --------------------------------------
+ AIP1A sink 0
+ AIP1B sink 1
+ Y-OUT src 2
+
+The device node must contain at least one sink port and the src port. Each input
+port must be linked to an endpoint defined in
+Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt. The
+port/connector layout is as follows
+
+tvp-5150 port@0 (AIP1A)
+ endpoint@0 -----------> Comp0-Con port
+ endpoint@1 -----------> Svideo-Con port
+tvp-5150 port@1 (AIP1B)
+ endpoint -----------> Comp1-Con port
+tvp-5150 port@2
+ endpoint (video bitstream output at YOUT[0-7] parallel bus)
+
+Required Endpoint Properties for parallel synchronization on output port:
- hsync-active: active state of the HSYNC signal. Must be <1> (HIGH).
- vsync-active: active state of the VSYNC signal. Must be <1> (HIGH).
@@ -26,17 +46,75 @@ Required Endpoint Properties for parallel synchronization:
If none of hsync-active, vsync-active and field-even-active is specified,
the endpoint is assumed to use embedded BT.656 synchronization.
-Example:
+Example - three input sources:
+
+comp_connector_0 {
+ compatible = "composite-video-connector";
+ label = "Composite0";
+
+ port {
+ composite0_to_tvp5150: endpoint {
+ remote-endpoint = <&tvp5150_to_composite0>;
+ };
+ };
+};
+
+comp_connector_1 {
+ compatible = "composite-video-connector";
+ label = "Composite1";
+
+ port {
+ composite1_to_tvp5150: endpoint {
+ remote-endpoint = <&tvp5150_to_composite1>;
+ };
+ };
+};
+
+svid_connector {
+ compatible = "svideo-connector";
+ label = "S-Video";
+
+ port {
+ svideo_to_tvp5150: endpoint {
+ remote-endpoint = <&tvp5150_to_svideo>;
+ };
+ };
+};
&i2c2 {
- ...
tvp5150@5c {
compatible = "ti,tvp5150";
reg = <0x5c>;
pdn-gpios = <&gpio4 30 GPIO_ACTIVE_LOW>;
reset-gpios = <&gpio6 7 GPIO_ACTIVE_LOW>;
- port {
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ tvp5150_to_composite0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&composite0_to_tvp5150>;
+ };
+
+ tvp5150_to_svideo: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&svideo_to_tvp5150>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ tvp5150_to_composite1: endpoint {
+ remote-endpoint = <&composite1_to_tvp5150>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+
tvp5150_1: endpoint {
remote-endpoint = <&ccdc_ep>;
};
--
2.19.0
