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-rw-r--r--dts/Bindings/ptp/ptp-qoriq.txt5
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diff --git a/dts/Bindings/ptp/ptp-qoriq.txt b/dts/Bindings/ptp/ptp-qoriq.txt
index c5d0e79..454c937 100644
--- a/dts/Bindings/ptp/ptp-qoriq.txt
+++ b/dts/Bindings/ptp/ptp-qoriq.txt
@@ -17,6 +17,11 @@ Clock Properties:
- fsl,tmr-fiper1 Fixed interval period pulse generator.
- fsl,tmr-fiper2 Fixed interval period pulse generator.
- fsl,max-adj Maximum frequency adjustment in parts per billion.
+ - fsl,extts-fifo The presence of this property indicates hardware
+ support for the external trigger stamp FIFO.
+ - little-endian The presence of this property indicates the 1588 timer
+ IP block is little-endian mode. The default endian mode
+ is big-endian.
These properties set the operational parameters for the PTP
clock. You must choose these carefully for the clock to work right.