From: Daniel Golle <daniel@makrotopia.org>
Date: Sat, 20 Sep 2025 11:56:59 +0000 (+0100)
Subject: arm64: dts: mediatek: mt7981b: add 'soc-uuid' cell to efuse
X-Git-Tag: v6.19-rc1~100^2~28^2~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d261557f7ad37fad44e3c07e76e63a60abcf8bc3;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: mediatek: mt7981b: add 'soc-uuid' cell to efuse

The efuse of the MediaTek MT7981 contains a 16-byte unique identifier.
Add a 'soc-uuid' cell covering those 16 bytes to the nvmem defininition
of the efuse to allow easy access from userspace, eg. to generate a
persistent random MAC address on boards which don't have any
factory-assigned addresses.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---

diff --git a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
index 5dae4a5f03a5b..58c99f2a25218 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
@@ -237,6 +237,10 @@
 			#address-cells = <1>;
 			#size-cells = <1>;
 
+			soc-uuid@140 {
+				reg = <0x140 0x10>;
+			};
+
 			thermal_calibration: thermal-calib@274 {
 				reg = <0x274 0xc>;
 			};