Commit dc5befec authored Apr 16, 2025 by Janne Grunau Committed by Sven Peter Apr 19, 2025

arm64: dts: apple: touchbar: Mark ps_dispdfr_be as always-on



The driver depends on boot loader initialized state which resets when the
ps_dispdfr_be power-domain is powered off. This happens on suspend or
when the driver is missing during boot.
Mark the domain as always on until the driver can handle this.

Fixes: 7275e795 ("arm64: dts: apple: Add touchbar screen nodes")
Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://lore.kernel.org/r/20250416-arm64_dts_apple_touchbar-v1-1-e1c0b53b9125@jannau.net


Signed-off-by: Sven Peter <sven@svenpeter.dev>

parent 712dc3e7

arch/arm64/boot/dts/apple/t8103-j293.dts

+10 −0

Original line number	Diff line number	Diff line
		@@ -77,6 +77,16 @@ touchbar0: touchbar@0 {
		};
		};

		/*
		* The driver depends on boot loader initialized state which resets when this
		* power-domain is powered off. This happens on suspend or when the driver is
		* missing during boot. Mark the domain as always on until the driver can
		* handle this.
		*/
		&ps_dispdfr_be {
		apple,always-on;
		};

		&display_dfr {
		status = "okay";
		};

arch/arm64/boot/dts/apple/t8112-j493.dts

+10 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,16 @@ led-0 {
		};
		};

		/*
		* The driver depends on boot loader initialized state which resets when this
		* power-domain is powered off. This happens on suspend or when the driver is
		* missing during boot. Mark the domain as always on until the driver can
		* handle this.
		*/
		&ps_dispdfr_be {
		apple,always-on;
		};

		&display_dfr {
		status = "okay";
		};