On Thursday 29 October 2020 10:32:04 Heiko Schocher wrote: > More mystically is, that it works fine for Pali on bus 0 but > makes problems on bus 1 ... !? > > Pali: Do you have also on bus 0 i2c writes?
Yes, there are many, search for "i2c_write" and see: https://gitlab.denx.de/u-boot/u-boot/-/blob/master/board/nokia/rx51/rx51.c And they works fine. Everything is for bus 0 except that one problematic i2c write which is for bus 1.