netdev - [PATCH v2 1/2] dt-bindings: net: xilinx_axienet: add pcs-handle attribute

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Message-Id: <20220317091926.86765-1-andy.chiu@sifive.com>
Date:   Thu, 17 Mar 2022 17:19:25 +0800
From:   Andy Chiu <andy.chiu@...ive.com>
To:     davem@...emloft.net, kuba@...nel.org, michal.simek@...inx.com,
        linux@...linux.org.uk, robert.hancock@...ian.com, andrew@...n.ch,
        netdev@...r.kernel.org, devicetree@...r.kernel.org
Cc:     Andy Chiu <andy.chiu@...ive.com>,
        Greentime Hu <greentime.hu@...ive.com>
Subject: [PATCH v2 1/2] dt-bindings: net: xilinx_axienet: add pcs-handle attribute

Document the new pcs-handle attribute to support connecting to an
external PHY in SGMII or 1000Base-X modes through the internal PCS/PMA
PHY.

Signed-off-by: Andy Chiu <andy.chiu@...ive.com>
Reviewed-by: Greentime Hu <greentime.hu@...ive.com>
---
 Documentation/devicetree/bindings/net/xilinx_axienet.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/xilinx_axienet.txt b/Documentation/devicetree/bindings/net/xilinx_axienet.txt
index b8e4894bc634..2a9a3a90eb63 100644
--- a/Documentation/devicetree/bindings/net/xilinx_axienet.txt
+++ b/Documentation/devicetree/bindings/net/xilinx_axienet.txt
@@ -68,6 +68,11 @@ Optional properties:
 		  required through the core's MDIO interface (i.e. always,
 		  unless the PHY is accessed through a different bus).
 
+ - pcs-handle: 	  Phandle to the internal PCS/PMA PHY, if a fixed external PHY
+		  is tied to it in SGMII or 1000Base-X modes. This is not
+		  required for SFP connection. The driver would use phy-handle
+		  to reference the PCS/PMA PHY in such case.
+
 Example:
 	axi_ethernet_eth: ethernet@...00000 {
 		compatible = "xlnx,axi-ethernet-1.00.a";
-- 
2.34.1