linux-kernel - [PATCH 1/6] arm64: dts: ls2080a-qds: add mdio mux nodes from on-board FPGA

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Date:   Thu, 17 Mar 2022 14:01:04 -0500
From:   Li Yang <leoyang.li@....com>
To:     Shawn Guo <shawnguo@...nel.org>, Li Yang <leoyang.li@....com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/6] arm64: dts: ls2080a-qds: add mdio mux nodes from on-board FPGA

Add mmio mdio mux nodes from the on-board FPGA.

Signed-off-by: Li Yang <leoyang.li@....com>
---
 .../boot/dts/freescale/fsl-ls2080a-qds.dts    | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2080a-qds.dts b/arch/arm64/boot/dts/freescale/fsl-ls2080a-qds.dts
index f6c3ee78ace0..c3caca1c0ab6 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls2080a-qds.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls2080a-qds.dts
@@ -23,3 +23,72 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 };
+
+/* Update DPMAC connections to external PHYs, under SerDes 0x2a_0x49. */
+&dpmac9 {
+	phy-handle = <&mdio0_phy12>;
+	phy-connection-type = "sgmii";
+};
+
+&dpmac10 {
+	phy-handle = <&mdio0_phy13>;
+	phy-connection-type = "sgmii";
+};
+
+&dpmac11 {
+	phy-handle = <&mdio0_phy14>;
+	phy-connection-type = "sgmii";
+};
+
+&dpmac12 {
+	phy-handle = <&mdio0_phy15>;
+	phy-connection-type = "sgmii";
+};
+
+&ifc {
+	boardctrl: board-control@3,0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "fsl,tetra-fpga", "fsl,fpga-qixis", "simple-mfd";
+		reg = <3 0 0x300>;
+		ranges = <0 3 0 0x300>;
+
+		mdio_mux_emi1 {
+			compatible = "mdio-mux-mmioreg", "mdio-mux";
+			mdio-parent-bus = <&emdio1>;
+			reg = <0x54 1>;		/* BRDCFG4 */
+			mux-mask = <0xe0>;	/* EMI1_MDIO */
+
+			#address-cells=<1>;
+			#size-cells = <0>;
+
+			/* Child MDIO buses, one for each riser card:
+			 * reg = 0x0, 0x20, 0x40, 0x60, 0x80, 0xa0.
+			 * VSC8234 PHYs on the riser cards.
+			 */
+
+			mdio_mux3: mdio@60 {
+				reg = <0x60>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				mdio0_phy12: mdio_phy0@1c {
+					reg = <0x1c>;
+				};
+
+				mdio0_phy13: mdio_phy1@1d {
+					reg = <0x1d>;
+				};
+
+				mdio0_phy14: mdio_phy2@1e {
+					reg = <0x1e>;
+				};
+
+				mdio0_phy15: mdio_phy3@1f {
+					reg = <0x1f>;
+				};
+			};
+		};
+	};
+};
+
-- 
2.25.1