Error when trying to set "ERR0PFGCDNR" register

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

Hi all,

I am trying to set a “ERR0PFGCDNR” this is an countdown register which, when activated, will countdown to zero and then produce a error. This is not activated and I can currently read this value which is 0. But when I try to enter a value into this register, using a kernel module, I get the error bellow:

s▒▒Unhandled Exception in EL3.
x30▒▒ kernel.
[ 489.985018] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 489.985225] rcu: 0-…0: (1 GPs behind) idle=53a/1/0x4000000000000000 softirq=8033/8034 fqs=2626
[ 553.004757] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 553.004952] rcu: 0-…0: (1 GPs behind) idle=53a/1/0x4000000000000000 softirq=8033/8034 fqs=10504
…

Can you reproduce this error and try and find a fix for this?

4

Hi,
Please share what your use-case is. It seems invalid to access the registers directly. Not sure which use-case would need this operation.

5

Fault injection

7

Hi,
In general, we don’t program the registers directly. What is the condition you would need to program the register? Do you observe the same condition on Orin developer kit?

9

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