Hi, > > > + ret = devm_regulator_get_enable(dev, "vcc"); > > > + if (ret) > > > + return ret; > > > + > > > > What happens if the SPI-NOR doesn't have a "vcc" regulator? > > ...the SPI-NOR will use the dummy regulator. Which then prints a warning "using dummy regulator". Is that the usual way to go? I mean the regulator is actually mandatory because it is the main voltage rail for the flash. To get rid of the warning one can add a fixed-regulator (which is correct anyway). But OTOH, the device tree lists it as optional (marking it as required isn't an option either because virtually all device trees won't have that property). -michael
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