linux-kernel - [PATCH 7/7] arm64: dts: ti: k3-am62: Add cpsw-mac-efuse node to wkup

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Date: Fri, 28 Jun 2024 10:15:18 -0500
From: Andrew Davis <afd@...com>
To: Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero
 Kristo <kristo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Jan Kiszka <jan.kiszka@...mens.com>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Andrew Davis <afd@...com>
Subject: [PATCH 7/7] 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@...com>
---
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi   | 2 +-
 arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
index 0f2722c4bcc32..9662b20d59dae 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
@@ -739,7 +739,7 @@ cpsw_port1: port@1 {
 				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 {
diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
index 66ddf2dc51afa..e0afafd532a5c 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
@@ -22,6 +22,11 @@ chipid: chipid@14 {
 			reg = <0x14 0x4>;
 		};
 
+		cpsw_mac_syscon: ethernet-mac-syscon@200 {
+			compatible = "ti,am62p-cpsw-mac-efuse", "syscon";
+			reg = <0x200 0x8>;
+		};
+
 		usb0_phy_ctrl: syscon@...8 {
 			compatible = "ti,am62-usb-phy-ctrl", "syscon";
 			reg = <0x4008 0x4>;
-- 
2.39.2