From 74ad752442d9488cf02ee2a9243d6c6b5c943efb Mon Sep 17 00:00:00 2001 From: Tom Lendacky Date: Tue, 24 Feb 2015 10:47:49 -0600 Subject: 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 Signed-off-by: David S. Miller --- Documentation/devicetree/bindings/net/amd-xgbe-phy.txt | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt b/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt index 33df3932168e..8db32384a486 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>; }; -- cgit v1.2.2