On 14/06/2023 07:32, Matti Vaittinen wrote: >>> +properties: >>> + compatible: >>> + const: rohm,bu27010 >>> + >>> + reg: >>> + maxItems: 1 >>> + >>> + interrupts: >>> + maxItems: 1 >>> + >>> + vdd-supply: true >> >> Isn't vdd-supply required for the hardware to work? How does it get the >> power otherwise? > > The BU27010 works by magic smoke. When smoke leaks out the sensor no > longer works. > > Ehh, I think you are right. My thinking was that it is not uncommon for > people to not have all fixed regulators present in device-tree. But I > agree, this does not mean we should encourage that. I'll add supply to > the list of the required properties. > If the device actually requires a regulator, it should be required by the bindings, even if it leads to dummies or fixed regulators on the board DTS. Best regards, Krzysztof
