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| author | Mugunthan V N <mugunthanvnm@ti.com> | 2016-10-18 16:50:17 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-18 10:42:16 -0400 |
| commit | d6081de7e011327af089475bb60593423963526a (patch) | |
| tree | 5a2379bb733419135ac9eb8ae1e4a3ec8ed3cd49 /Documentation | |
| parent | 403f0727cb35d3ce82166340d792e20c7d5adb30 (diff) | |
| download | linux-d6081de7e011327af089475bb60593423963526a.tar.gz linux-d6081de7e011327af089475bb60593423963526a.tar.bz2 linux-d6081de7e011327af089475bb60593423963526a.zip | |
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')
| -rw-r--r-- | Documentation/devicetree/bindings/net/ti,dp83867.txt | 12 |
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 |