On 25/01/2024 10:46, AnnanLiu wrote: > + > + pclk: pclk { > + #clock-cells = <0>; > + compatible = "fixed-clock"; > + clock-frequency = <25000000>; It does not look like you tested the DTS against bindings. Please run `make dtbs_check W=1` (see Documentation/devicetree/bindings/writing-schema.rst or https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/ for instructions). Also, why do you describe internal clock as stub? Best regards, Krzysztof