Hello, > On some boards the 100MHz PCIe reference clock to both controller and > devices is controllable. Add that clock to the list of clocks. > > The clock is optional, so the minItems stays the same. Applied to dt-bindings, thank you! [1/1] dt-bindings: PCI: dwc: rockchip: Document optional PCIe reference clock input https://git.kernel.org/pci/pci/c/639f666cf84e Krzysztof