On Fri, Nov 08, 2024 at 10:27:08AM +0100, Florian Eckert wrote: > On 2024-11-08 09:46, Andy Shevchenko wrote: > > +Cc: Florian (as this indeed rang a bell to me) > > > > https://lore.kernel.org/all/d84fb798722762862a7fb08f1e343b6a@xxxxxxxxxx/ > > The message was forwarded by Andy because I had a similar problem with my > APU3 [1] > from PC-engine [2], which is also using the PIIX4 for I2C (SMBUS). > > > > Maybe I need to modify ACPI code somehow to create these > > > 'physical_nodesX' folders for the relevant i2c-7/8/9 buses? > > I don't know if that helps, but with the following SSDT overlay I managed > to get the driver to feel responsible for the mcp23017 via the I2C (SMBUS) > of the APU3. The mcp23017 is used on my APU3 to add additional LEDs to > '/sys/class/leds'. Thanks for prompt response! Can you, folks, elaborate and update the in-kernel documentation [1] by adding a section to it for the above topic, so next time I have got a Q like this I can point to there? [1]: Documentation/i2c/busses/i2c-piix4.rst -- With Best Regards, Andy Shevchenko
