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-rw-r--r--Documentation/devicetree/bindings/phy/fsl,imx-pcie-phy.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/phy/fsl,imx-pcie-phy.txt b/Documentation/devicetree/bindings/phy/fsl,imx-pcie-phy.txt
index 627b508ecadc..77841c4959b0 100644
--- a/Documentation/devicetree/bindings/phy/fsl,imx-pcie-phy.txt
+++ b/Documentation/devicetree/bindings/phy/fsl,imx-pcie-phy.txt
@@ -6,6 +6,8 @@ Required properties:
- reg: The base address and length of the registers
- clocks: Phandles to the clocks for each clock listed in clock-names
- clock-names: Must contain "phy"
+- ext_osc: Specify the reference clock source. 1: external oscilltor is
+ used as PCIe reference clock. 0: internal PLL is used.
- power-domains: Phandle to the power domain that the device is part of
Example: