Hi Rob > > From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> > > > > This patch switches from .txt base to .yaml base Document. > > > > Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> > > --- (snip) > > + dai: > > + type: object > > + properties: > > + sound-dai: > > + $ref: /schemas/types.yaml#/definitions/phandle-array > > This should have a common definition elsewhere which I'd prefer be in > the dtschema repo. You can just assume there is and do 'maxItems: 1' > here assuming it's only 1. I think dai and/or sound-dai are not common definition. These are very simple-card specific property. Thank you for your help !! Best regards --- Kuninori Morimoto