From 84220bfe9b794c051f927e1374c90ce288295b96 Mon Sep 17 00:00:00 2001 From: Janne Grunau Date: Thu, 8 Jan 2026 22:04:03 +0100 Subject: [PATCH] arm64: dts: apple: t8103: Add ps_pmp dependency to ps_gfx 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 Link: https://patch.msgid.link/20260108-apple-dt-pmgr-fixes-v1-3-cfdce629c0a8@jannau.net Signed-off-by: Sven Peter --- arch/arm64/boot/dts/apple/t8103-pmgr.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/apple/t8103-pmgr.dtsi b/arch/arm64/boot/dts/apple/t8103-pmgr.dtsi index 4bfe0d2de30a..fef8a4058f14 100644 --- a/arch/arm64/boot/dts/apple/t8103-pmgr.dtsi +++ b/arch/arm64/boot/dts/apple/t8103-pmgr.dtsi @@ -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 {