13.05.2022 16:40, Shreeya Patel пишет: > Also, why would we want to do a SW reset here? > > In the datasheet, I could see the following steps to enable the sensor > Supply VDD to Sensor (Sensor in Standby Mode) ---> Wait 100 ms (min) - > initial startup time > ---> I2C Command (Write) To enable sensor to Active Mode For example, if you'll do kexec from other kernel, say downstream kernel, then the h/w state is undetermined for us. It's a common problem with downstream drivers that they rely on a specific state left from bootloader, which is often unacceptable for upstream. If we'll do the SW reset on probe, then we'll bring h/w into the predictable state and won't depend on state left from bootloader or anything else that touched h/w before us.
