Hello,
I'm using STPM4Raspi (ST33TPHF2ESPI) on Linux.
For performance reasons, I would like to use the Linux driver (tpm_tis_core.c) in interrupt mode. Hence I've added the support in the Linux device Tree. The linux driver tries to probe the interrupt during the boot, but fallbacks in polling mode as the interrupt mode does not work.
With the oscillo on PIN 29 ( PIRQ c.f data briel of STPM4Raspi) I can see 3,3V but never the low active mode.
I've doubled checked the linux driver and there is no error in the function tpm_tis_probe_irq_single (activation of the TPM interrupt).
My questions:
- Can I activate the interrupt mode with this board and the TPM firmware version (73.08) ?
- Do I need a patch in the linux driver (my kernel version is 4.19.10)?
Thanks
