IMX8MP MIPI-CSI2 Problems in custom camera

[v_parri]

Hi, my name is Victor and I'm in a project where we're trying to send image from a custom 4-lane camera to the IMX8MP (in a imx8mp-evk board) using the MIPI-CSI2 interface but I'm stuck trying to make it work.

I want to modify the ov5640 config and drivers but I'm not sure how many things I have to change. I'm ony interested in make it work sending image, the I2C is not needed at this moment and the camera is conected to the MIPI_CSI_0.

1) Is it enough if I modify the device tree configuration? which parameters do I have to modify? This is the configuration that I'm using:

imx8mp.dtsi:

mipi_csi_0: csi@32e40000 {
compatible = "fsl,imx8mp-mipi-csi", "fsl,imx8mn-mipi-csi";
reg = <0x32e40000 0x10000>;
interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
clock-frequency = <500000000>;
clocks = <&clk IMX8MP_CLK_MEDIA_CAM1_PIX>,
<&clk IMX8MP_CLK_MEDIA_AXI>,
<&clk IMX8MP_CLK_MEDIA_APB>;
clock-names = "mipi_clk", "disp_axi", "disp_apb";
assigned-clocks = <&clk IMX8MP_CLK_MEDIA_CAM1_PIX>;
assigned-clock-parents = <&clk IMX8MP_SYS_PLL2_1000M>;
assigned-clock-rates = <500000000>;
bus-width = <4>;
csi-gpr = <&mediamix_gasket0>;
gpr = <&mediamix_blk_ctl>;
no-reset-control;
power-domains = <&mipi_phy1_pd>;
status = "disabled";
};

imx8mp-evk.dts:

&mipi_csi_0 {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";

port@0 {
reg = <0>;
mipi_csi0_ep: endpoint {
remote-endpoint = <&ov5640_mipi_0_ep>;
data-lanes = <4>;
};
};
};

2) Do I have to modify the ov5640 driver too? I've located this driver: ov5640_mipi_v2.c but not sure about it

Just modifying the device tree if I try to build a pipe with gstreamer to read from video0 I'm getting this error:

gst-launch-1.0 -v v4l2src ! "video/x-bayer,format=bggr,width=640,height=480,framerate=30/1" ! bayer2rgb ! videoconvert ! autovideosink sync=false
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Device '/dev/video0' is not a capture device.Additional debug info:
../../../git/sys/v4l2/v4l2_calls.c(677): gst_v4l2_open (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
Capabilities: 0x4204000
Setting pipeline to NULL ...
Freeing pipeline ...

Also the configuration read from v412-ctl tool is:

v4l2-ctl --list-devices
mxc-isi-m2m (platform:32e00000.isi:m2m_devic):
/dev/video0

v4l2-ctl --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
Type: Video Capture Multiplanar

[0]: 'RGBP' (16-bit RGB 5-6-5)
[1]: 'RGB3' (24-bit RGB 8-8-8)
[2]: 'BGR3' (24-bit BGR 8-8-8)
[3]: 'YUYV' (YUYV 4:2:2)
[4]: 'YUV4' (32-bit A/XYUV 8-8-8-8)
[5]: 'NV12' (Y/CbCr 4:2:0)
[6]: 'YM24' (Planar YUV 4:4:4 (N-C))
[7]: 'XR24' (32-bit BGRX 8-8-8-8)
[8]: 'AR24' (32-bit BGRA 8-8-8-8)

Please any help will be appreciated

[joanxie]

which dts file do you use? did you try to use imx8mp-evk-basler-ov5640.dtb?

[Matt_S]

I just used the evk dts as a base.  Should I use the Hassler one to get the camera working?

[joanxie]

I just got my imx8mp board, firstly, pls tell me what bsp version you use? let me reproduce this

[Matt_S]

Did you get any where with this?   It is important to get the capture device functioning. 

[v_parri]

Hi, the BSP we're curently using is the 5.4.47. 

Any help will be appreciated,

Thanks