On 07/04/2022 09:55, Krzysztof Kozlowski wrote: (...) >> + - | >> + soc { >> + #address-cells = <1>; >> + #size-cells = <1>; >> + >> + mailbox: mailbox { >> + #mbox-cells = <1>; >> + }; > > I propose to skip the mailbox node, it's trivial and obvious from > mailbox providers/consumers documentation. That was a wrong advice, you indeed need it to describe the phandle, as Rob suggested. Best regards, Krzysztof