linux-kernel - [PATCH 2/2] arm64: dts: marvell: eDPU: add support for version with external switch

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Message-ID: <20230914094550.1519097-2-robert.marko@sartura.hr>
Date:   Thu, 14 Sep 2023 11:45:01 +0200
From:   Robert Marko <robert.marko@...tura.hr>
To:     andrew@...n.ch, gregory.clement@...tlin.com,
        sebastian.hesselbarth@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     luka.perkov@...tura.hr, Robert Marko <robert.marko@...tura.hr>
Subject: [PATCH 2/2] arm64: dts: marvell: eDPU: add support for version with external switch

New revision of eDPU uses an Marvell MV88E6361 switch to connect the SFP
cage and G.hn IC instead of connecting them directly to the ethernet
controllers.

U-Boot will enable the switch node and disable the unused ethernet
controller.

Signed-off-by: Robert Marko <robert.marko@...tura.hr>
---
 .../boot/dts/marvell/armada-3720-eDPU.dts     | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-3720-eDPU.dts b/arch/arm64/boot/dts/marvell/armada-3720-eDPU.dts
index 57fc698e55d0..d6d37a1f6f38 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-eDPU.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-eDPU.dts
@@ -12,3 +12,50 @@ / {
 &eth0 {
 	phy-mode = "2500base-x";
 };
+
+/*
+ * External MV88E6361 switch is only available on v2 of the board.
+ * U-Boot will enable the MDIO bus and switch nodes.
+ */
+&mdio {
+	status = "disabled";
+	pinctrl-names = "default";
+	pinctrl-0 = <&smi_pins>;
+
+	/* Actual device is MV88E6361 */
+	switch: switch@0 {
+		compatible = "marvell,mv88e6190";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0>;
+		status = "disabled";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				label = "cpu";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				ethernet = <&eth0>;
+			};
+
+			port@9 {
+				reg = <9>;
+				label = "downlink";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+			};
+
+			port@a {
+				reg = <10>;
+				label = "uplink";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				sfp = <&sfp_eth1>;
+			};
+		};
+	};
+};
-- 
2.41.0