On Thu, Jun 26, 2025 at 03:38:03PM +0800, Richard Zhu wrote: > On i.MX, the PCIe reference clock might come from either internal > system PLL or external clock source. On i.MX, PCIe has two reference clock inputs: one from the internal PLL and one from an external clock source. Only one needs to be used, depending on the board design. > Add the external reference clock source for reference clock. for external reference clock. subject missed s, should be dt-bindings. > > Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx> > Reviewed-by: Frank Li <Frank.Li@xxxxxxx> > --- > Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml > index ca5f2970f217..a45876aba4da 100644 > --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml > +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml > @@ -219,7 +219,12 @@ allOf: > - const: pcie_bus > - const: pcie_phy > - const: pcie_aux > - - const: ref > + - description: PCIe reference clock. > + oneOf: > + - description: The controller might be configured clocking > + coming in from either an internal system PLL or an > + external clock source. description: The controller have two reference clock inputs: internal system PLL and external clock cource. Only one need be used. > + enum: [ref, extref] > > unevaluatedProperties: false > > -- > 2.37.1 >
