Xavier CAN controller clock problem (JetPack 4.4 + Connect Tech BSP L4T r32.4.3 – JetPack 4.4)

[shgarg]

Hi marius,
Xavier CAN clock parent used to be pllaon. Now for power saving purpose , we have disabled pllaon. and using pllc which gives 38.4Mhz which you are seeing.
To use pllaon only, you can follow instructions from this thread.

Controller Area Network (CAN) on Xavier NX at 1Mbps

Hi everyone, To achieve exact 1Mbps: Here is the documentation available to change CAN parent clock to PLLAON. https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fclocks.html%23wwpID0E06B0HA Check “ To use PLLAON as clock source” section With PLLAON, users will be able to achieve 50MHz CAN core clock rate and 1Mbps exact bitrate settings as well. To set 40MHz clock rate, I just replied in this thread, please check it out. T…

Thanks,
Shubhi