amd-xgbe-phy: Change auto-negotiation logic

The auto negotiation logic was geared to being the initiator of the
auto negotiation. This presented problems when auto negotiation was
initiated by the remote end. Change the auto negotiation logic to
make use of the auto negotiation event interrupt thus allowing the
auto negotiation state machine to function properly in either scenario.
This also removes the polling during auto-negotiation.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt b/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt
index 42409bf..d54fe1a 100644
--- a/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt
+++ b/Documentation/devicetree/bindings/net/amd-xgbe-phy.txt
@@ -7,6 +7,9 @@ Required properties:
    - SerDes Rx/Tx registers
    - SerDes integration registers (1/2)
    - SerDes integration registers (2/2)
+- interrupt-parent: Should be the phandle for the interrupt controller
+  that services interrupts for this device
+- interrupts: Should contain the amd-xgbe-phy interrupt.
 
 Optional properties:
 - amd,speed-set: Speed capabilities of the device
@@ -19,5 +22,7 @@ Example:
 		reg = <0 0xe1240800 0 0x00400>,
 		      <0 0xe1250000 0 0x00060>,
 		      <0 0xe1250080 0 0x00004>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 323 4>;
 		amd,speed-set = <0>;
 	};