Reading more than one Mipi packet at a time

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
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1

Hi Everyone,
I am working on Xavier NX board for receiving Mipi data from custom sensor.
I have successfully implemented a driver for receiving data for following specification.
Lane config : 3 * 4
Packet width : 32K
Packet Height : 1
Data Rate : 900Mbps
I can able to read each packet using V4l2 API once packet is received.
Is there any way to read more than one packet at a time. example once 20 frames(packet = 32k * 1) received,
Is there any way to customize the driver to notify that 20 frames received and read 20 frames as one packet from API.

2

Moving this to the proper forum, from Physics Modeling > Xavier NX.

5

Not clear of your question. But current camera driver are design as streaming mode, that tell when you start capture it won’t stop until stream off command from user space.

6

Hi Shane,
When am dequeuing Mipi data using V4l2 API, I can able read one frame/packet(example 32k * 1) at a time. But is any way to dequeue more than one packet/frame at a time. It means, Is any possibility to achieve this by writing a custom driver.

regards
Albin Raj R J

7

As my early comment when you start capture it will continuous capture data from MIPI bus, if your device continuous stream and APP not stop capture it will continuous capture frame.