17.06.2021 18:12, Guenter Roeck пишет: >> For now I see that the rising edge isn't needed, the TEMP_ALERT goes >> HIGH by itself when temperature backs to normal. But I will try to >> double check. >> > The point is that a sysfs event should be sent to userspace on both > edges, not only when an alarm is raised. But, you are correct, > IRQ_TYPE_EDGE_RISING is currently not needed since sysfs events > are not generated. Ok, thank you for the clarification. >>> Anyway, the tegra30 dts files in the upstream kernel either use >>> IRQ_TYPE_LEVEL_LOW or no interrupts for nct1008. The Nexus 7 dts file >>> in the upstream kernel has no interrupt configured (and coincidentally >>> it was you who added that entry). Where do you see IRQ_TYPE_LEVEL_HIGH ? >> I have a patch that will add the interrupt property, it's stashed >> locally for the next kernel release. >> >> IIUC, it's not only the Tegra30 dts, but all the TegraXXX boards that >> use IRQ_TYPE_LEVEL_LOW are in the same position. > I still don't see a IRQ_TYPE_LEVEL_HIGH, though. Could you please clarify why you're looking for HIGH and not for LOW? The TEMP_ALERT is active-low.
