File snps,dwc3.yaml describes the schema of Synopsys DesignWare USB3 Controller, it directly or indirectly contains "$ref: usb.yaml". So the node name of "snps,dwc3" must start with "usb". Otherwise, the following warning will be displayed: Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.example.dt.yaml: \ dwc3@38100000: $nodename:0: 'dwc3@38100000' does not match '^usb(@.*)?' From schema: Documentation/devicetree/bindings/usb/snps,dwc3.yaml Zhen Lei (2): dt-bindings: usb: dwc3-imx8mp: Use the correct name for child node "snps,dwc3" arm64: dts: imx8mp: Use the correct name for child node "snps,dwc3" Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml | 9 +++------ arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 ++-- 2 files changed, 5 insertions(+), 8 deletions(-) -- 1.8.3