On 08/15/2019 09:12 AM, Wolfram Sang wrote: >> I kept it in because i2c-elektor also exposes it in the same way, and >> it seems useful. > > Yeah, I noticed. I don't know how useful it is in practice (same for the > getown callback) but I don't have better ideas, so let's just keep this > to be consistent. Well, the other option is to remove it, and then add it back once somebody complains - which is unlikely to happen. The clock parameter is PCF8584 specific anyway, and I think removing it is a good option, as I've done the same with getown() (where in i2c-elektor, 'own' sets the PCF8584's own address). Question is, if I remove the parameter, I'd like it to be non-destructive. Do you know of anything that can go wrong if the I2C master is running the bus on a wrong clock? Thanks Max