We have a project based on CVBS camera. The camera module will provide its output as CVBS(Composite Video) and a decoder IC(TVP5150AM1)is used to convert the analog signal to parallel.
I have look up i.MX6 IPU TVIN Application Note about how to connetc the TVin Chip to CSI as fallowing:
The main chip is imx6ul, linux kernel is 4.1.15 downloaded from NXP, the driver of tvp5150 is ./drivers/media/i2c/tvp5150.c, the driver of csi capture is ./drivers/media/platform/mxc/subdev/mx6s_capture.c in linux kernel.
My dts is as following:
&i2c2 {
clock_frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c2>;
status = "okay";
tvp5150_decoder: tvp5150@5d {
compatible = "ti,tvp5150";
reg = <0x5d>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_csi1>;
port {
tvp5150_ep: endpoint {
remote-endpoint = <&csi1_ep>;
};
};
};
};
&csi {
status = "okay";
//pinctrl-names = "default";
//pinctrl-0 = <&pinctrl_csi1>;
port {
csi1_ep: endpoint {
remote-endpoint = <&tvp5150_ep>;
};
};
};
The following picture is caputred from linux application:
My question:
1. how to associate the tvp5150 driver with the csi capture driver？
2. if I want to config the csi in BT656 mode, which registers should be configed?
Hi igorpadykov:
I look up the RFM of imx6ul about CSI, it said that "According to the CCIR656 specification, the image must be in 625/50 PAL or 525/60 NTSC format.", but my camera is 420 TV Line. What result is it, if I use this camera?
Hi igorpadykov:
I patch the code which you send to me, I can get the output video, but it is not stable, it is scrolling，and the video split two part as below.
