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rockchip: correct MAC address for Radxa E20C

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Use the unique MAC address in EEPROM for eth0.
The MAC address of RTL8111H (eth1) is correct.

Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
This commit is contained in:
Chukun Pan 2025-12-16 21:27:02 +08:00 • committed by Daniel Golle
parent dccfc10957
commit 7a07d38f33
1 changed files with 52 additions and 0 deletions
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52
target/linux/rockchip/patches-6.12/165-arm64-dts-rockchip-Use-MAC-address-from-EEPROM-for-.patch Normal file
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@ -0,0 +1,52 @@
From 66f872646878e1f124d39bca3966dc65c2af6eef Mon Sep 17 00:00:00 2001
From: Chukun Pan <amadeus@jmu.edu.cn>
Date: Sun, 30 Nov 2025 18:09:03 +0800
Subject: [PATCH] arm64: dts: rockchip: Use MAC address from EEPROM for
Radxa E20C
The EEPROM on the Radxa E20C stores two unique MAC addresses.
Assigned to network interfaces via device tree.
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
---
--- a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
@@ -17,7 +17,6 @@
compatible = "radxa,e20c", "rockchip,rk3528";
aliases {
- ethernet0 = &gmac1;
i2c1 = &i2c1;
mmc0 = &sdhci;
mmc1 = &sdmmc;
@@ -213,6 +212,8 @@
pinctrl-names = "default";
pinctrl-0 = <&rgmii_miim>, <&rgmii_tx_bus2>, <&rgmii_rx_bus2>,
<&rgmii_rgmii_clk>, <&rgmii_rgmii_bus>;
+ nvmem-cells = <&eth_mac1>;
+ nvmem-cell-names = "mac-address";
status = "okay";
};
@@ -232,6 +233,20 @@
pagesize = <16>;
read-only;
vcc-supply = <&vcc_3v3>;
+
+ nvmem-layout {
+ compatible = "fixed-layout";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ eth_mac0: macaddr@9e {
+ reg = <0x9e 0x06>;
+ };
+
+ eth_mac1: macaddr@a4 {
+ reg = <0xa4 0x06>;
+ };
+ };
};
};