[PATCH 2/2] ARM: dts: imx6qdl-sabresd: Add an mdio node

From: Fabio Estevam <festevam@gmail.com>
To: shawnguo@kernel.org
Cc: smoch@web.de, Fabio Estevam <festevam@gmail.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] ARM: dts: imx6qdl-sabresd: Add an mdio node
Date: Thu, 25 Jun 2020 08:08:15 -0300	[thread overview]
Message-ID: <20200625110815.8098-2-festevam@gmail.com> (raw)
In-Reply-To: <20200625110815.8098-1-festevam@gmail.com>

imx6q-tbs2910 has an Atheros AR8035 Ethernet PHY at address 4.

The AR8035 provides a 125MHz clock to the ENET_REF_CLK i.MX6 pin.

Improve the Ethernet representation by adding an mdio node with such
information.

This fixes an Ethernet regression in U-Boot as U-Boot AR803X driver now
expects the 'qca,clk-out-frequency' property to be passed via
device tree.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
 arch/arm/boot/dts/imx6q-tbs2910.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/imx6q-tbs2910.dts b/arch/arm/boot/dts/imx6q-tbs2910.dts
index 7b03b2787430..dfba19cd7af5 100644
--- a/arch/arm/boot/dts/imx6q-tbs2910.dts
+++ b/arch/arm/boot/dts/imx6q-tbs2910.dts
@@ -101,7 +101,18 @@
 	phy-mode = "rgmii-id";
 	phy-reset-gpios = <&gpio1 25 GPIO_ACTIVE_LOW>;
 	phy-reset-duration = <10>;
+	phy-handle = <&phy>;
 	status = "okay";
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		phy: ethernet-phy@4 {
+			reg = <4>;
+			qca,clk-out-frequency = <125000000>;
+		};
+	};
 };
 
 &hdmi {
-- 
2.17.1


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