I thought (but I could be wrong) that if the driver is called
"stm32f4-i2c", it is used to match "st,stm32f4-i2c" even without
.of_match_table. If this doesn't work, please disregard my question.

This currently works only for *i2c client drivers*, it never did for i2c
adapters. And even for clients, this behaviour is going to be deprecated
somewhen. There are people working on it...

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