On Tue, Feb 16, 2021 at 11:09:33PM +0100, Marten Lindahl wrote: > > Any reason why not "|= MASTER_ID(i2c->adap.nr)" here instead of more > > expensive IO read? It's quite important because your current code will > > bitwise-or old I2C slave address with a new one... This should break > > during tests with multiple I2C slave devices, shouldn't it? > > > > You are correct. It is better to use the macro instead, and yes, > safer too. I only have one device that supports high speed i2c, but > I get your point. It could potentially break. > > > On which HW did you test it? > > I used an Artpec development board as master and INA230EVM board > as slave. Artpec development board with? What SoC? Best regards, Krzysztof