linux-kernel - [PATCH v3 3/3] dt-bindings: net: ftgmac100: describe phy-handle and MDIO

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Message-ID: <20201030133707.12099-4-i.mikhaylov@yadro.com>
Date:   Fri, 30 Oct 2020 16:37:07 +0300
From:   Ivan Mikhaylov <i.mikhaylov@...ro.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Po-Yu Chuang <ratbert@...aday-tech.com>
CC:     Ivan Mikhaylov <i.mikhaylov@...ro.com>,
        Joel Stanley <joel@....id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <openbmc@...ts.ozlabs.org>
Subject: [PATCH v3 3/3] dt-bindings: net: ftgmac100: describe phy-handle and MDIO

Add the phy-handle and MDIO description and add the example with
PHY and MDIO nodes.

Signed-off-by: Ivan Mikhaylov <i.mikhaylov@...ro.com>
---
 .../devicetree/bindings/net/ftgmac100.txt     | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/ftgmac100.txt b/Documentation/devicetree/bindings/net/ftgmac100.txt
index f878c1103463..accb1b1e07b3 100644
--- a/Documentation/devicetree/bindings/net/ftgmac100.txt
+++ b/Documentation/devicetree/bindings/net/ftgmac100.txt
@@ -15,6 +15,7 @@ Required properties:
 - interrupts: Should contain ethernet controller interrupt
 
 Optional properties:
+- phy-handle: See ethernet.txt file in the same directory.
 - phy-mode: See ethernet.txt file in the same directory. If the property is
   absent, "rgmii" is assumed. Supported values are "rgmii*" and "rmii" for
   aspeed parts. Other (unknown) parts will accept any value.
@@ -32,6 +33,9 @@ Optional properties:
       - "MACCLK": The MAC IP clock
       - "RCLK": Clock gate for the RMII RCLK
 
+Optional subnodes:
+- mdio: See mdio.txt file in the same directory.
+
 Example:
 
 	mac0: ethernet@...60000 {
@@ -40,3 +44,24 @@ Example:
 		interrupts = <2>;
 		use-ncsi;
 	};
+
+Example with phy-handle:
+
+	mac1: ethernet@...80000 {
+		compatible = "aspeed,ast2500-mac", "faraday,ftgmac100";
+		reg = <0x1e680000 0x180>;
+		interrupts = <2>;
+
+		phy-handle = <&phy>;
+		phy-mode = "rgmii";
+
+		mdio {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			phy: ethernet-phy@1 {
+				compatible = "ethernet-phy-ieee802.3-c22";
+				reg = <1>;
+			};
+		};
+	};
-- 
2.21.1