[PATCH] ARM: dts: BCM5301X: AC56U: add nvram node

From: Rosen Penev

Date: Mon Sep 07 2026 - 15:40:40 EST


Add it and set for gmac0, which is the only GMAC used on this board.

nvram size found from a random bootlog online.

Signed-off-by: Rosen Penev <rosenp@xxxxxxxxx>
---
.../boot/dts/broadcom/bcm4708-asus-rt-ac56u.dts | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/broadcom/bcm4708-asus-rt-ac56u.dts b/arch/arm/boot/dts/broadcom/bcm4708-asus-rt-ac56u.dts
index c80ac16ad949..550cc67f5ba6 100644
--- a/arch/arm/boot/dts/broadcom/bcm4708-asus-rt-ac56u.dts
+++ b/arch/arm/boot/dts/broadcom/bcm4708-asus-rt-ac56u.dts
@@ -25,6 +25,15 @@ memory@0 {
<0x88000000 0x08000000>;
};

+ nvram@1c080000 {
+ compatible = "brcm,nvram";
+ reg = <0x1c080000 0x180000>;
+
+ et0macaddr: et0macaddr {
+ #nvmem-cell-cells = <1>;
+ };
+ };
+
leds {
compatible = "gpio-leds";

@@ -92,3 +101,8 @@ button-wps {
&usb3_phy {
status = "okay";
};
+
+gmac0 {
+ nvmem-cells = <&et0macaddr 0>;
+ nvmem-cell-names = "mac-address";
+};
--
2.55.0