arm64: dts: ti: k3-am62: Add cpsw-mac-efuse node to wkup_conf

The WKUP system controller address region contains an eFuse block with
MAC addresses to be used by the Ethernet controller. The property
“ti,syscon-efuse” contains a phandle to a syscon region and an offset
into this region where the MAC addresses can be found. Currently
"ti,syscon-efuse" points to the entire system controller address space
node with an offset to the eFuse IP address.

Instead add a cpsw-mac-efuse node to describe the exact eFuse area. Then
point the Ethernet controller directly to this region, no offset needed.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240628151518.40100-8-afd@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

Author: glneo

arch/arm64/boot/dts/ti/k3-am62-main.dtsi

@@ -735,7 +735,7 @@
 				label = "port1";
 				phys = <&phy_gmii_sel 1>;
 				mac-address = [00 00 00 00 00 00];
-				ti,syscon-efuse = <&wkup_conf 0x200>;
+				ti,syscon-efuse = <&cpsw_mac_syscon 0x0>;
 			};
 
 			cpsw_port2: port@2 {

arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi

@@ -22,6 +22,11 @@
 			reg = <0x14 0x4>;
 		};
 
+		cpsw_mac_syscon: ethernet-mac-syscon@200 {
+			compatible = "ti,am62p-cpsw-mac-efuse", "syscon";
+			reg = <0x200 0x8>;
+		};
+
 		usb0_phy_ctrl: syscon@4008 {
 			compatible = "ti,am62-usb-phy-ctrl", "syscon";
 			reg = <0x4008 0x4>;