arm64: dts: mediatek: mt7986a: add 'soc-uuid' cell to efuse

The efuse of the MediaTek MT7986 contains an 8-byte unique identifier.
Add a 'soc-uuid' cell covering those 8 bytes to the nvmem defininition
of the efuse to allow easy access from userspace, eg. to generate a
persistent random MAC address on boards like the BananaPi R3 which
doesn'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/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
index a8972330a7b89c022cd71500bdd3c883a9051e8e..7790601586ccf4022296d43c06d038ddba9ec150 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -450,6 +450,10 @@
                        #address-cells = <1>;
                        #size-cells = <1>;
 
+                       soc-uuid@140 {
+                               reg = <0x140 0x8>;
+                       };
+
                        thermal_calibration: calib@274 {
                                reg = <0x274 0xc>;
                        };