Assign GPIO core affinity for iio device interrupts

[tomer.rubinstein]

Hi I’ve enabled the use of lsm6dsr module and I’ve noticed all hard IRQ handling (/proc/interrupts) are done in core 0. the problem is that when connecting USB camera + external SDD + M.2 WiFi adapter the core gets to busy and that affects the lsm6dsr interrupt calls.
I’ve tried to set the smp_affinity for the lsm6dsr IRQ but I get: bash: echo: write error: Input/output error.
I’m using main GPIO PCC.03. mapped to IRQ 294
any suggestion about how to set the GPIO IRQ core affinity ?

attached is /proc/interrupts output:

int.txt (23.6 KB)

[KevinFFF]

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

Hi tomer.rubinstein,

Are you using the devkit or custom board for Orin NX?
What’s your Jetpack version in use

Which interface are you using for LSM6DSR module?

@tomer.rubinstein

when connecting USB camera + external SDD + M.2 WiFi adapter the core gets to busy and that affects the lsm6dsr interrupt calls

Do you mean LSM6DSR work as expected if you don’t connect “USB camera + external SDD + M.2 WiFi adapter”?

It seems you have multiple peripherals connected.
Could you share the block diagram of your connections?