+Cc: Hans On Mon, May 11, 2020 at 2:38 PM Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> wrote: > > +Andy > > Adding also the linux-usb mailing list. > > On Mon, May 11, 2020 at 01:06:18PM +0200, jakub@xxxxxxxx wrote: > > Hello, I'm running Intel NUC10i3 with Ubuntu 20.04 on board. I have a problem > > with cpu interrups causing issues with deeper CPU sleep and increased power > > usage. Also load is always 1 even if machine has nothing to do. > > > > I made a reasearch and found that device named TPS6598x interrupts my CPU. This > > device is related with USB and according to datasheet it's "USB Interface IC USB > > Type-CG and USB PD controller power switch and high-speed multiplexer ". I have > > nothing connected to NUC except power plug and ethernet cable. > > > > Screenshots: https://imgur.com/a/uw9NDCi > > > > How to solve this issue? Could you help me? > > My guess is that the IRQ resource is not correct for the PD > controller causing you to see irq flood. > > The problem is that the ACPI device entry (the node) on this platform > has 4 I2CSerialBus resources and 4 IRQ resources. The idea is that the > single ACPI device entry can represent up to 4 USB PD controllers. The > problem is that there is no way to know which IRQ resource belongs to > which I2CSerialBus resource :-(. > > Andy, this is one of those multi-instantiate I2C slave devices with > HID INT3515. > > The only solution I can think of is that we start maintaining DMI > quirk table in drivers/platform/x86/i2c-multi-instantiate.c where we > supply the correct i2c to irq resource mapping for every platform > that has this device(s). I would rather disable them and issue a firmware bug. Vendors, including us, should do something sane about this. > > Kernel version: > > > > Linux NUC 5.6.11-050611-generic #202005061022 SMP Wed May 6 10:27:04 UTC 2020 > > x86_64 x86_64 x86_64 GNU/Linux > > > > Bios version: > > FNCML357 Version: 0039 Date: 3/12/2020 -- With Best Regards, Andy Shevchenko
