[linux kernel 5.16, HS38x2] How to change ARConnect IDU mode, like level trigger to edge trigger ?

[joshualin-petaio]

Hi expert,

I want to change the ARConnect IDU mode, like level trigger to edge trigger. Can I setup the IRQ cell in device tree or which API I can use?

Thanks, Joshua

[abrodkin]

Hi @joshualin-petaio! Indeed, you may specify the second cell for IDU requesting edge-triggered interrupts.
See https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt.

Don't forget to set #interrupt-cells = <2>; in the IDU node!

Let me know if that reference helps or you need more support with this one.

[joshualin-petaio]

Hi Alexey,

Thanks for your reply. It helpful for me and it seems works fine now. I'll do more test for this modify. Thank you so much.

Thanks, Joshua

[abrodkin]

@joshualin-petaio if all works for you now, do you mind closing this issue?