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arm64: dts: apple: t8103: Add ps_pmp dependency to ps_gfx

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AGX appears to have a hidden communication channel to pmp, a power
management related co-processor already brought up by Apple's
bootloader. As there is not driver for this co-processor its
power-domain gets shut down after the initial boot.
This crashes the firmware running on AGX immediately.
Until there is a pmp driver and the dependency between AGX and pmp is
understood keep "ps_pmp" as dependency of "ps_gfx".

Signed-off-by: Janne Grunau <j@jannau.net>
Link: https://patch.msgid.link/20260108-apple-dt-pmgr-fixes-v1-3-cfdce629c0a8@jannau.net
Signed-off-by: Sven Peter <sven@kernel.org>
This commit is contained in:
Janne Grunau 2026-01-08 22:04:03 +01:00 committed by Sven Peter
parent 5434705682
commit 84220bfe9b
1 changed files with 1 additions and 0 deletions
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arch/arm64/boot/dts/apple/t8103-pmgr.dtsi
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@ -733,6 +733,7 @@ ps_gfx: power-controller@3f8 {
#power-domain-cells = <0>;
#reset-cells = <0>;
label = "gfx";
power-domains = <&ps_pmp>;
};
ps_dcs4: power-controller@320 {