disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/arch/arm64/boot/dts/amlogic/meson-gx-libretech-pc.dtsi
..
..
@@ -17,7 +17,7 @@
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 		io-channel-names = "buttons";
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 		keyup-threshold-microvolt = <1800000>;
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-		update-button {
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+		button-update {
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 			label = "update";
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 			linux,code = <KEY_VENDOR>;
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 			press-threshold-microvolt = <1300000>;