Aspeed 2500 EVB i2c transaction time out

Shay Slobodkin shays at
Thu Jul 21 20:56:03 AEST 2016


We faced an i2c transaction time-out issue on Aspeed 2500 EVB board.
It happens when we try to connect on board LM75 at 0x4d driver to bus 7.

We used kernel and also tried kernel.

We also tried to change i2c timeout counter (I2CD08) from 3 bits to 5 bits, according to Aspeed AST2400 to AST2500 migration guideline, but it didn't help.

Is that a known issue?
Is there a known solution you can point us to?

Thanks for the assistance,
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