From ff1d3acbe1860dee559c8351eb18ebc9d0329799 Mon Sep 17 00:00:00 2001
From: "Michal S." <me@mchal.lol>
Date: Mon, 2 Nov 2026 09:09:24 +0000
Subject: [PATCH] arm64: dts: apple: add GPU thermal switch-on trips

The GPU zones have one passive trip, so power_allocator runs
continuously and can limit CPU power while GPU temperatures are low.
Add an earlier passive trip to start control near the existing target.

The 100 C switch-on point is provisional and needs thermal review.

Generated-by: LLM
Assisted-by: LLM
Signed-off-by: Michal S. <me@mchal.lol>
---
 .../arm64/boot/dts/apple/t604x-j614-j616.dtsi | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/t604x-j614-j616.dtsi b/arch/arm64/boot/dts/apple/t604x-j614-j616.dtsi
index 63fcaed9f6c50..18ee2e8a4f519 100644
--- a/arch/arm64/boot/dts/apple/t604x-j614-j616.dtsi
+++ b/arch/arm64/boot/dts/apple/t604x-j614-j616.dtsi
@@ -988,6 +988,12 @@
 			trips {
 				J616S_FAN_TRIPS(gpu0)
 
+				trip-switch-on {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
 				gpu0_passive: trip-passive {
 					temperature = <101000>;
 					hysteresis = <5000>;
@@ -1043,6 +1049,12 @@
 			trips {
 				J616S_FAN_TRIPS(gpu1)
 
+				trip-switch-on {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
 				gpu1_passive: trip-passive {
 					temperature = <101000>;
 					hysteresis = <5000>;
@@ -1098,6 +1110,12 @@
 			trips {
 				J616S_FAN_TRIPS(gpu2)
 
+				trip-switch-on {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
 				gpu2_passive: trip-passive {
 					temperature = <101000>;
 					hysteresis = <5000>;
@@ -1153,6 +1171,12 @@
 			trips {
 				J616S_FAN_TRIPS(gpu3)
 
+				trip-switch-on {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
 				gpu3_passive: trip-passive {
 					temperature = <101000>;
 					hysteresis = <5000>;
@@ -1208,6 +1232,12 @@
 			trips {
 				J616S_FAN_TRIPS(gpu4)
 
+				trip-switch-on {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
 				gpu4_passive: trip-passive {
 					temperature = <101000>;
 					hysteresis = <5000>;
@@ -1263,6 +1293,12 @@
 			trips {
 				J616S_FAN_TRIPS(gpu5)
 
+				trip-switch-on {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
 				gpu5_passive: trip-passive {
 					temperature = <101000>;
 					hysteresis = <5000>;
@@ -1318,6 +1354,12 @@
 			trips {
 				J616S_FAN_TRIPS(gpu6)
 
+				trip-switch-on {
+					temperature = <100000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
 				gpu6_passive: trip-passive {
 					temperature = <101000>;
 					hysteresis = <5000>;