[PATCH v2 07/10] [media] tvp5150: Add device tree binding document
From: Javier Martinez Canillas <hidden>
Date: 2016-01-07 12:47:36
Also in:
linux-media, lkml
Subsystem:
media input infrastructure (v4l/dvb), open firmware and flattened device tree bindings, the rest · Maintainers:
Mauro Carvalho Chehab, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add a Device Tree binding document for the TVP5150 video decoder. Signed-off-by: Javier Martinez Canillas <redacted> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> --- Changes in v2: - Fix indentation of the DTS example. Suggested by Rob Herring. - Rename powerdown-gpios to pdn-gpios to match the pin name in the datasheet. Suggested by Laurent Pinchart. - Add optional properties for the video endpoint and list the supported values. Suggested by Laurent Pinchart. .../devicetree/bindings/media/i2c/tvp5150.txt | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/tvp5150.txt
diff --git a/Documentation/devicetree/bindings/media/i2c/tvp5150.txt b/Documentation/devicetree/bindings/media/i2c/tvp5150.txt
new file mode 100644
index 000000000000..8c0fc1a26bf0
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/tvp5150.txt@@ -0,0 +1,45 @@ +* Texas Instruments TVP5150 and TVP5151 video decoders + +The TVP5150 and TVP5151 are video decoders that convert baseband NTSC and PAL +(and also SECAM in the TVP5151 case) video signals to either 8-bit 4:2:2 YUV +with discrete syncs or 8-bit ITU-R BT.656 with embedded syncs output formats. + +Required Properties: +- compatible: value must be "ti,tvp5150" +- reg: I2C slave address + +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. + +Required Endpoint Properties for parallel synchronization: + +- hsync-active: active state of the HSYNC signal. Must be <1> (HIGH). +- vsync-active: active state of the VSYNC signal. Must be <1> (HIGH). +- field-even-active: field signal level during the even field data + transmission. Must be <0>. + +If none of hsync-active, vsync-active and field-even-active is specified, +the endpoint is assumed to use embedded BT.656 synchronization. + +Example: + +&i2c2 { + ... + tvp5150@5c { + compatible = "ti,tvp5150"; + reg = <0x5c>; + pdn-gpios = <&gpio4 30 GPIO_ACTIVE_LOW>; + reset-gpios = <&gpio6 7 GPIO_ACTIVE_LOW>; + + port { + tvp5150_1: endpoint { + remote-endpoint = <&ccdc_ep>; + }; + }; + }; +};
--
2.4.3