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authorMugunthan V N <mugunthanvnm@ti.com>2016-10-18 16:50:17 +0530
committerDavid S. Miller <davem@davemloft.net>2016-10-18 10:42:16 -0400
commitd6081de7e011327af089475bb60593423963526a (patch)
tree5a2379bb733419135ac9eb8ae1e4a3ec8ed3cd49 /Documentation/devicetree/bindings/net/ti,dp83867.txt
parent403f0727cb35d3ce82166340d792e20c7d5adb30 (diff)
net: phy: dp83867: Add documentation for optional impedance control
Add documention of ti,min-output-impedance and ti,max-output-impedance which can be used to correct MAC impedance mismatch using phy extended registers. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/devicetree/bindings/net/ti,dp83867.txt')
-rw-r--r--Documentation/devicetree/bindings/net/ti,dp83867.txt12
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/ti,dp83867.txt b/Documentation/devicetree/bindings/net/ti,dp83867.txt
index 5d21141a68b5..85bf945b898f 100644
--- a/Documentation/devicetree/bindings/net/ti,dp83867.txt
+++ b/Documentation/devicetree/bindings/net/ti,dp83867.txt
@@ -9,6 +9,18 @@ Required properties:
- ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h
for applicable values
+Optional property:
+ - ti,min-output-impedance - MAC Interface Impedance control to set
+ the programmable output impedance to
+ minimum value (35 ohms).
+ - ti,max-output-impedance - MAC Interface Impedance control to set
+ the programmable output impedance to
+ maximum value (70 ohms).
+
+Note: ti,min-output-impedance and ti,max-output-impedance are mutually
+ exclusive. When both properties are present ti,max-output-impedance
+ takes precedence.
+
Default child nodes are standard Ethernet PHY device
nodes as described in Documentation/devicetree/bindings/net/phy.txt