[PATCH v2 2/6] arm: dts: lx2160aqds: add MDIO slots

[Ioana Ciornei]

The LX2160A processor has two external MDIO interfaces, described in the
DTS as emdio1 and emdio2.

On the LX2160AQDS board EMDIO1 is used with two onboard RGMII PHYs
(Realtek RTL8211FD-CG), as well as eight input/output connectors for
mezzanine cards. Configuration signals from the Qixis FPGA control the
routing of the external MDIOs.

Register 0x54 of the Qixis FPGA controls the routing of the EMDIO1 one
of the 8 IO slots. As a consequence, a new node is added to
describe register 0x54 as a MDIO mux controlled with child nodes
describing all the IO slots as MDIO buses.

Also, DPMAC 17 and 18 are updated to reference the on-board PHYs.

Signed-off-by: Ioana Ciornei <ioana.ciornei at nxp.com>
---
Changes in v2:
 - reword commit message


 arch/arm/dts/fsl-lx2160a-qds.dts | 115 ++++++++++++++++++++++++++++++-
 1 file changed, 114 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/fsl-lx2160a-qds.dts b/arch/arm/dts/fsl-lx2160a-qds.dts
index 592fd5977e27..4946ce8dfba8 100644
--- a/arch/arm/dts/fsl-lx2160a-qds.dts
+++ b/arch/arm/dts/fsl-lx2160a-qds.dts
@@ -2,7 +2,7 @@
 /*
  * NXP LX2160AQDS device tree source
  *
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2020 NXP
  *
  */
 
@@ -18,6 +18,26 @@
 	};
 };
 
+&dpmac17 {
+	status = "okay";
+	phy-handle = <&rgmii_phy1>;
+	phy-connection-type = "rgmii-id";
+};
+
+&dpmac18 {
+	status = "okay";
+	phy-handle = <&rgmii_phy2>;
+	phy-connection-type = "rgmii-id";
+};
+
+&emdio1 {
+	status = "okay";
+};
+
+&emdio2 {
+	status = "okay";
+};
+
 &esdhc0 {
 	status = "okay";
 };
@@ -30,6 +50,99 @@
 	status = "okay";
 	u-boot,dm-pre-reloc;
 
+	fpga at 66 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "simple-mfd";
+		reg = <0x66>;
+
+		mux-mdio at 54 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "mdio-mux-i2creg";
+			reg = <0x54>;
+			#mux-control-cells = <1>;
+			mux-reg-masks = <0x54 0xf8>; // reg 0x54, bits 7:3
+			mdio-parent-bus = <&emdio1>;
+
+			mdio at 00 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x00>;
+
+				rgmii_phy1: ethernet-phy at 1 {
+					reg = <0x1>;
+				};
+			};
+			mdio at 08 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x40>;
+
+				rgmii_phy2: ethernet-phy at 2 {
+					reg = <0x2>;
+				};
+			};
+
+			emdio1_slot1: mdio at c0 { /* I/O Slot #1 */
+				reg = <0xC0>;
+				device-name = "emdio1_slot1";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			emdio1_slot2: mdio at c8 { /* I/O Slot #2 */
+				reg = <0xC8>;
+				device-name = "emdio1_slot2";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			emdio1_slot3: mdio at d0 { /* I/O Slot #3 */
+				reg = <0xD0>;
+				device-name = "emdio1_slot3";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			emdio1_slot4: mdio at d8 { /* I/O Slot #4 */
+				reg = <0xD8>;
+				device-name = "emdio1_slot4";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			emdio1_slot5: mdio at e0 { /* I/O Slot #5 */
+				reg = <0xE0>;
+				device-name = "emdio1_slot5";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			emdio1_slot6: mdio at e8 { /* I/O Slot #6 */
+				reg = <0xE8>;
+				device-name = "emdio1_slot6";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			emdio1_slot7: mdio at f0 { /* I/O Slot #7 */
+				reg = <0xF0>;
+				device-name = "emdio1_slot7";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			emdio1_slot8: mdio at f8 { /* I/O Slot #8 */
+				reg = <0xF8>;
+				device-name = "emdio1_slot8";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+		};
+
+	};
+
 	i2c-mux at 77 {
 		compatible = "nxp,pca9547";
 		reg = <0x77>;
-- 
2.17.1