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Cannot create /dev/video0 when I try to probing ov7670 driver in Linux run on Zedboard. The kernel version I'm using is 5.4 , I use Petalinux version 2021.1 to build Linux project and also enable the ov7670 driver in kernel source and I use Vivado 2020.2 to build the hardware design.The driver detected ov7670 chip successfully but still cannot create /dev/video0. My hardware design include (ov7670 capture IP core mainly use to convert 8 bit data of camera to axis stream, VDMA IP core to store and retrieve data , I2C for the camera configuration). My question is do i need an IP core like Xilinx VPSS(Video Processing Subsystem) or Xilinx Test Pattern Generator (TPG) act as an endpoint to attach with the camera. Please help me.

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  • please add what happens in dmesg -Hwx when you load the driver. Also, please tell us the version of your kernel, and how you got that driver (which I think nobody here knows). Commented Mar 4, 2023 at 10:55
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. Commented Mar 4, 2023 at 14:50
  • @MarcusMüller About verion of kernel is 5.4 and I'm using petalinux version 2021.1 to enable ov7670.c driver in kernel source. And about the command "dmesg -Hwx" I'll will try it as soon as posisble tormorrow. Commented Mar 4, 2023 at 15:02
  • @MarcusMüller Further more, I'm using Vivado 2020.2 to design the hardware of Zedboard. My question is do i need an IP core like Xilinx VPSS(Video Processing Subsystem) or Xilinx Test Pattern Generator (TPG) act as an endpoint to attach with the camera if not so what harware IP core can do that. Sorry for my poor English . Please help me. Commented Mar 4, 2023 at 15:10
  • Your English is very good! My compliments! Commented Mar 4, 2023 at 15:51

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