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 5dae4a5f03a5b1163e062e2884e91dcb344e0fe9..58c99f2a252185ab3848e72d0046660552231498 100644 (file)
--- 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>;
                        };