On 15/08/2022 12:04, Jiucheng Xu wrote: >>>> +properties: >>>> + compatible: >>>> + items: >>> You have only one item, so remove "items". > > Hi Krzysztof, > > I have tried to remove "items", but error comes. > > properties: > compatible: > - enum: > - amlogic,g12a-ddr-pmu > - amlogic,g12b-ddr-pmu > - amlogic,sm1-ddr-pmu > > Do I get misunderstand? I think the "item" is necessary. And how other bindings are doing it? Best regards, Krzysztof