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dt-bindings: net: phy: vsc8531: document the load/save GPIO 

A new optional property can be used to reference the load/save GPIO,
used for PTP hardware clock (PHC) operations. This patch documents it in
the binding documentation.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antoine Tenart 2020-06-23 16:30:13 +02:00 committed by David S. Miller
parent 7d272e63e0
commit 3461522d00
1 changed files with 3 additions and 0 deletions
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Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt
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@ -31,6 +31,8 @@ Optional properties:
VSC8531_LINK_100_ACTIVITY (2),
VSC8531_LINK_ACTIVITY (0) and
VSC8531_DUPLEX_COLLISION (8).
- load-save-gpios : GPIO used for the load/save operation of the PTP
hardware clock (PHC).
Table: 1 - Edge rate change
@ -67,4 +69,5 @@ Example:
vsc8531,edge-slowdown = <7>;
vsc8531,led-0-mode = <LINK_1000_ACTIVITY>;
vsc8531,led-1-mode = <LINK_100_ACTIVITY>;
load-save-gpios = <&gpio 10 GPIO_ACTIVE_HIGH>;
};