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Subject[PATCH v3 1/2] net: phy: dp83867: Add documentation for SGMII mode type
Add documentation of ti,sgmii-ref-clock-output-enable
which can be used to select SGMII mode type (4 or 6-wire).

Signed-off-by: Vitaly Gaiduk <>
Documentation/devicetree/bindings/net/ti,dp83867.txt | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/ti,dp83867.txt b/Documentation/devicetree/bindings/net/ti,dp83867.txt
index db6aa3f..c98c682 100644
--- a/Documentation/devicetree/bindings/net/ti,dp83867.txt
+++ b/Documentation/devicetree/bindings/net/ti,dp83867.txt
@@ -37,6 +37,10 @@ Optional property:
for applicable values. The CLK_OUT pin can also
be disabled by this property. When omitted, the
PHY's default will be left as is.
+ - ti,sgmii-ref-clock-output-enable - This denotes the fact which
+ SGMII configuration is used (4 or 6-wire modes).
+ Some MACs work with differential SGMII clock.
+ See data manual for details.

Note: ti,min-output-impedance and ti,max-output-impedance are mutually
exclusive. When both properties are present ti,max-output-impedance
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