mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 05:44:11 +00:00
622b2d10fc
Describe newly introduced OF properties for ov7670 image sensor. The driver supports two standard properties to configure synchronism signals polarities and one custom property already supported as platform data options to suppress pixel clock during horizontal blankings. Re-phrase child nodes description while at there. Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
55 lines
1.7 KiB
Text
55 lines
1.7 KiB
Text
* Omnivision OV7670 CMOS sensor
|
|
|
|
The Omnivision OV7670 sensor supports multiple resolutions output, such as
|
|
CIF, SVGA, UXGA. It also can support the YUV422/420, RGB565/555 or raw RGB
|
|
output formats.
|
|
|
|
Required Properties:
|
|
- compatible: should be "ovti,ov7670"
|
|
- clocks: reference to the xclk input clock.
|
|
- clock-names: should be "xclk".
|
|
|
|
Required Endpoint Properties:
|
|
- 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.
|
|
|
|
Optional Properties:
|
|
- reset-gpios: reference to the GPIO connected to the resetb pin, if any.
|
|
Active is low.
|
|
- powerdown-gpios: reference to the GPIO connected to the pwdn pin, if any.
|
|
Active is high.
|
|
- ov7670,pclk-hb-disable: a boolean property to suppress pixel clock output
|
|
signal during horizontal blankings.
|
|
|
|
The device node must contain one 'port' child node with one 'endpoint' child
|
|
sub-node for its digital output video port, in accordance with the video
|
|
interface bindings defined in:
|
|
Documentation/devicetree/bindings/media/video-interfaces.txt.
|
|
|
|
Example:
|
|
|
|
i2c1: i2c@f0018000 {
|
|
ov7670: camera@21 {
|
|
compatible = "ovti,ov7670";
|
|
reg = <0x21>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pinctrl_pck0_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>;
|
|
reset-gpios = <&pioE 11 GPIO_ACTIVE_LOW>;
|
|
powerdown-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
|
|
clocks = <&pck0>;
|
|
clock-names = "xclk";
|
|
assigned-clocks = <&pck0>;
|
|
assigned-clock-rates = <25000000>;
|
|
|
|
ov7670,pclk-hb-disable;
|
|
|
|
port {
|
|
ov7670_0: endpoint {
|
|
hsync-active = <0>;
|
|
vsync-active = <0>;
|
|
|
|
remote-endpoint = <&isi_0>;
|
|
};
|
|
};
|
|
};
|
|
};
|