linux-kernel - [PATCH 1/3] dt-bindings: net: Add bindings for Realtek PHYs

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Message-Id: <20190701195225.120808-1-mka@chromium.org>
Date:   Mon,  1 Jul 2019 12:52:23 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     "David S . Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH 1/3] dt-bindings: net: Add bindings for Realtek PHYs

Add the 'realtek,enable-ssc' property to enable Spread Spectrum
Clocking (SSC) on Realtek PHYs that support it.

Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
---
 .../devicetree/bindings/net/realtek.txt       | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/realtek.txt

diff --git a/Documentation/devicetree/bindings/net/realtek.txt b/Documentation/devicetree/bindings/net/realtek.txt
new file mode 100644
index 000000000000..9fad97e7404f
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/realtek.txt
@@ -0,0 +1,21 @@
+Realtek PHY properties.
+
+This document describes properties of Realtek PHYs.
+
+Optional properties:
+- realtek,enable-ssc	Enable Spread Spectrum Clocking (SSC) on this port.
+			SSC is only available on some Realtek PHYs (e.g.
+			RTL8211E).
+
+Example:
+
+mdio0 {
+	compatible = "snps,dwmac-mdio";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	ethphy: ethernet-phy@1 {
+		reg = <1>;
+		realtek,enable-ssc;
+	};
+};
-- 
2.22.0.410.gd8fdbe21b5-goog