2154533_en-US

はい

Settings to operate ov2740 camera on i.MX93 FRDM

Hi,

I am trying to operate an OV2740 camera module on the IMX93 FRDM board.

And when I am trying to capture a frame, the v4l2-ctl hangs :

root@imx93frdm:~# v4l2-ctl -d /dev/video0 --set-fmt-video=width=1932,height=1092,pixelformat=BA10 --stream-mmap=4 --stream-count=1 --stream-to=test_capture.raw --verbose

VIDIOC_QUERYCAP: ok
VIDIOC_G_FMT: ok
VIDIOC_S_FMT: ok
Format Video Capture Multiplanar:
Width/Height : 1932/1092
Pixel Format : 'BA10' (10-bit Bayer GRGR/BGBG)
Field : None
Number of planes : 1
Flags :
Colorspace : sRGB
Transfer Function : Default
YCbCr/HSV Encoding: ITU-R 601
Quantization : Full Range
Plane 0 :
Bytes per Line : 3864
Size Image : 4219488
VIDIOC_REQBUFS returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_G_FMT returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_STREAMON returned 0 (Success)

The media graph looks to be ok :

root@imx93frdm:~# media-ctl -p
Media controller API version 6.6.36

Media device information
------------------------
driver mxc-md
model FSL Capture Media Device
serial
bus info platform:42800000.bus:camera
hw revision 0x0
driver version 6.6.36

Device topology
- entity 1: mxc_isi.0 (16 pads, 2 links, 0 routes)
type V4L2 subdev subtype Unknown flags 0
pad0: Sink
<- "mxc-mipi-csi2.0":4 [ENABLED]
pad1: Sink
pad2: Sink
pad3: Sink
pad4: Sink
pad5: Sink
pad6: Sink
pad7: Sink
pad8: Sink
pad9: Sink
pad10: Sink
pad11: Sink
pad12: Source
-> "mxc_isi.0.capture":0 [ENABLED]
pad13: Source
pad14: Source
pad15: Sink

- entity 18: mxc_isi.0.capture (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video0
pad0: Sink
<- "mxc_isi.0":12 [ENABLED]

- entity 22: mxc-mipi-csi2.0 (8 pads, 2 links)
type Node subtype V4L flags 0
device node name /dev/v4l-subdev0
pad0: Sink
<- "ov2740 2-0036":0 [ENABLED,IMMUTABLE]
pad1: Sink
pad2: Sink
pad3: Sink
pad4: Source
-> "mxc_isi.0":0 [ENABLED]
pad5: Source
pad6: Source
pad7: Source

- entity 31: ov2740 2-0036 (1 pad, 1 link, 0 routes)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev1
pad0: Source
[stream:0 fmt:SGRBG10_1X10/1932x1092 field:none
crop.bounds:(0,0)/1932x1092
crop:(0,0)/1932x1092]
-> "mxc-mipi-csi2.0":0 [ENABLED,IMMUTABLE]

My DTS :
&clk {
assigned-clocks = <&clk IMX93_CLK_CCM_CKO3>;
assigned-clock-parents = <&clk IMX93_CLK_24M>;
assigned-clock-rates = <24000000>;
};

ov2740_mipi: ov2740_mipi@36{

compatible = "ovti,ov2740";

reg = <0x36>;

pinctrl-names = "default";

pinctrl-0 = <&pinctrl_cam_mclk>;

clocks = <&clk IMX93_CLK_CCM_CKO3>;

assigned-clocks = <&clk IMX93_CLK_CCM_CKO3>;

assigned-clock-rates = <24000000>;

clock-names = "xclk";

clock-frequency = <24000000>;

reset-gpios = <&pcal6524 22 GPIO_ACTIVE_LOW>;

csi_id = <0>;

mipi_csi;

rotation = <0>;

orientation = <2>;

status = "okay";

port {

ov2740_mipi_ep: endpoint {

remote-endpoint = <&mipi_csi_in_ep>;

bus-type = <4>;

data-lanes = <1 2>;

clock-noncontinuous;

link-frequencies = /bits/ 64 <360000000>;

};

&cameradev {

status = "okay";

};

&isi_0 {

status = "okay";

cap_device {

status = "okay";

};

&mipi_csi {

status = "okay";

fsl,rx-lanes = <2>;

csis-hs-settle = <16>;

/* Port 0: sink from the sensor */

port@0 {

reg = <0>;

mipi_csi_in_ep: endpoint {

remote-endpoint = <&ov2740_mipi_ep>;

data-lanes = <2>;

cfg-clk-range = <28>;

hs-clk-range = <0x16>;

bus-type = <4>;

clock-noncontinuous;

};

};

The driver is the ov2740 driver from the linux-imx scargapth. I modified it to match the DT and I changed the PLL configuration to match a 24MHz clock :

Here is the camera data-sheet :
www.elinfor.com/pdf/OmniVision/OV2740-OmniVision.pdf

Note that my module regulators are connected to the 3.3 volt, because of this, I didn't define regulators in the DTS

Any advice

BR
Basel