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media: dt-bindings: ov5640: refine CSI-2 and add parallel interface 

Refine CSI-2 endpoint documentation and add bindings
for DVP parallel interface support.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
hifive-unleashed-5.1
Hugues Fruchet 2018-01-03 04:57:30 -05:00 committed by Mauro Carvalho Chehab
parent 0f7acb5291
commit 495f014d31
1 changed files with 44 additions and 2 deletions
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46
Documentation/devicetree/bindings/media/i2c/ov5640.txt
View File

@ -1,4 +1,4 @@
* Omnivision OV5640 MIPI CSI-2 sensor
* Omnivision OV5640 MIPI CSI-2 / parallel sensor
Required Properties:
- compatible: should be "ovti,ov5640"
@ -18,7 +18,25 @@ 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.
Example:
OV5640 can be connected to a MIPI CSI-2 bus or a parallel bus endpoint.
Endpoint node required properties for CSI-2 connection are:
- remote-endpoint: a phandle to the bus receiver's endpoint node.
- clock-lanes: should be set to <0> (clock lane on hardware lane 0)
- data-lanes: should be set to <1> or <1 2> (one or two CSI-2 lanes supported)
Endpoint node required properties for parallel connection are:
- remote-endpoint: a phandle to the bus receiver's endpoint node.
- bus-width: shall be set to <8> for 8 bits parallel bus
or <10> for 10 bits parallel bus
- data-shift: shall be set to <2> for 8 bits parallel bus
(lines 9:2 are used) or <0> for 10 bits parallel bus
- hsync-active: active state of the HSYNC signal, 0/1 for LOW/HIGH respectively.
- vsync-active: active state of the VSYNC signal, 0/1 for LOW/HIGH respectively.
- pclk-sample: sample data on rising (1) or falling (0) edge of the pixel clock
signal.
Examples:
&i2c1 {
ov5640: camera@3c {
@ -35,6 +53,7 @@ Example:
reset-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
port {
/* MIPI CSI-2 bus endpoint */
ov5640_to_mipi_csi2: endpoint {
remote-endpoint = <&mipi_csi2_from_ov5640>;
clock-lanes = <0>;
@ -43,3 +62,26 @@ Example:
};
};
};
&i2c1 {
ov5640: camera@3c {
compatible = "ovti,ov5640";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ov5640>;
reg = <0x3c>;
clocks = <&clk_ext_camera>;
clock-names = "xclk";
port {
/* Parallel bus endpoint */
ov5640_to_parallel: endpoint {
remote-endpoint = <&parallel_from_ov5640>;
bus-width = <8>;
data-shift = <2>; /* lines 9:2 are used */
hsync-active = <0>;
vsync-active = <0>;
pclk-sample = <1>;
};
};
};
};