Adding maintainers for this driver/platform to CC... On Wed, Jan 05, 2022 at 10:51:38AM +0100, Kristian Evensen wrote: > Hello, > > I am in the process of bringing kernel 5.10 up on an mt7621-based > board. The board is equipped with a temperature sensor that is > connected to the i2c bus. Reading the temperature worked fine with my > previous kernel (OpenWRT 4.14/downstream i2c driver), but fails when I > use the upstream driver. > > With the 5.10 i2c-mt7621-driver, i2cdetect is no longer able to detect > the sensor and i2cget fails with "Error: Read failed". An strace of > i2cget reveals the cause to be the final ioctl call failing with > ETIMEDOUT. > > Replacing the new with the old driver makes i2c work again, but I > would like to try to avoid that. My knowledge of i2c is very limited, > so I wondered if anyone knows what could be wrong or have any > suggestions on things I can try to for example change in the driver? > > Thanks in advance for any help, > Kristian
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