On 08/03/2023 13:58, Svyatoslav Ryhel wrote: > > > 8 березня 2023 р. 14:54:34 GMT+02:00, Mark Brown <broonie@xxxxxxxxxx> написав(-ла): >> On Wed, Mar 08, 2023 at 11:40:23AM +0200, Svyatoslav Ryhel wrote: >>> Add supply property. >> >>> + vdd-supply: true >>> + >>> required: >>> - compatible >>> - reg >> >> Unless the device can work without power the supply should be required. > > Device can work without supply defined on most devices, Are you sure they can work without any power? INA231 does not say VS supply is optional. Datasheet says: "The INA231 is typically powered by a separate supply that can range from 2.7 V to 5.5 V." Although it uses word "typically" which could suggest other design, but are you sure it can work without it? From where it gets the power? > but in my case power is gated with gpio and devices will not work without fixed regulator. BTW, wrap your lines to match mailing list style. Best regards, Krzysztof
