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media: dt-bindings: tvp5150: add optional sdtv standards documentation

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Document the optional binding to limit the possible sdtv standards on the
input connectors.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Marco Felsch 2020-03-12 11:31:54 +01:00 committed by Mauro Carvalho Chehab
parent 47428787b8
commit de4362899e
1 changed files with 10 additions and 0 deletions
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10
Documentation/devicetree/bindings/media/i2c/tvp5150.txt
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@ -49,13 +49,22 @@ Required Endpoint Properties for parallel synchronization on output port:
Note: Do not specify any of these properties if you want to use the embedded
BT.656 synchronization.
Optional Connector Properties:
==============================
- sdtv-standards: Set the possible signals to which the hardware tries to lock
instead of using the autodetection mechnism. Please look at
[1] for more information.
[1] Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt.
Example - three input sources:
#include <dt-bindings/display/sdtv-standards.h>
comp_connector_0 {
compatible = "composite-video-connector";
label = "Composite0";
sdtv-standards = <SDTV_STD_PAL_M>; /* limit to pal-m signals */
port {
composite0_to_tvp5150: endpoint {
@ -67,6 +76,7 @@ comp_connector_0 {
comp_connector_1 {
compatible = "composite-video-connector";
label = "Composite1";
sdtv-standards = <SDTV_STD_NTSC_M>; /* limit to ntsc-m signals */
port {
composite1_to_tvp5150: endpoint {