On 22/02/2022 07:15, qinjian[覃健] wrote: >>> + >>> +properties: >>> + $nodename: >>> + const: '/' >>> + compatible: >>> + oneOf: >>> + - items: >>> + - const: sunplus,sp7021-achip >>> + >> >> You did not publish DTS so bigger picture and context are missing here. >> Is it a SoC compatible? A board compatible? Why only one? Against what >> does it validate? >> >> This binding looks incomplete. > > Sunplus SP7021 is an ARM Cortex A7 based SoC. > The patch is for SP7021 SoC and SP7021 based boards. > Sorry, I don't understand your questions. > Could you explain more? You have there only one compatible but if I would expect at least two. One for SoC and one for board. Something like this: Documentation/devicetree/bindings/arm/rda.yaml but in your case enum would have only one entry. Best regards, Krzysztof