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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2015-02-24 16:47:49 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-25 21:57:42 (GMT) |
| commit | 74ad752442d9488cf02ee2a9243d6c6b5c943efb (patch) | |
| tree | af8e09c59ad00cc9ef1183d14bc7944d76a76177 /Documentation | |
| parent | 5c2d2b148b35a995f0c0e76a3a37902ec98f164c (diff) | |
| download | linux-74ad752442d9488cf02ee2a9243d6c6b5c943efb.tar.xz | |
amd-xgbe-phy: PHY KX/KR mode differences
The PHY requires different settings for the Decision Feedback Analyzer
(DFE) when running in KX mode vs. KR mode. Update the code to change
these settings when changing modes in order to provide a more stable
link.
Additionally, adjust the 10GbE PQ skew default setting to a more sane
value.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/net/amd-xgbe-phy.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt b/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt index 33df393..8db3238 100644 --- a/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt +++ b/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt @@ -27,6 +27,8 @@ property is used. - amd,serdes-cdr-rate: CDR rate speed selection - amd,serdes-pq-skew: PQ (data sampling) skew - amd,serdes-tx-amp: TX amplitude boost +- amd,serdes-dfe-tap-config: DFE taps available to run +- amd,serdes-dfe-tap-enable: DFE taps to enable Example: xgbe_phy@e1240800 { @@ -41,4 +43,6 @@ Example: amd,serdes-cdr-rate = <2>, <2>, <7>; amd,serdes-pq-skew = <10>, <10>, <30>; amd,serdes-tx-amp = <15>, <15>, <10>; + amd,serdes-dfe-tap-config = <3>, <3>, <1>; + amd,serdes-dfe-tap-enable = <0>, <0>, <127>; }; |