When I do dt_binding_check, below warning is reported: Documentation/devicetree/bindings/sound/renesas,rsnd.example.dt.yaml: \ sound@ec500000: 'dais' is a required property I looked at all the dts files in the "arch/arm64/boot/dts/renesas/" directory. However, the dts node of this driver does not reference any property in file audio-graph.yaml. This can be proved to be true, because after I deleted "$ref: audio-graph.yaml#", the old 'dais' warnings are cleared, and no new warning are generated. Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx> --- Documentation/devicetree/bindings/sound/renesas,rsnd.yaml | 1 - 1 file changed, 1 deletion(-) diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml index 1e0e14e889133b8..384191ee497f534 100644 --- a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml +++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml @@ -258,7 +258,6 @@ required: - "#sound-dai-cells" allOf: - - $ref: audio-graph.yaml# - if: properties: compatible: -- 2.26.0.106.g9fadedd