[PATCH] arm64: dts: qcom: mahua-t14s: Enable GPU and GMU

[Lukas Märdian]

The GPU and GMU were disabled when the ThinkPad T14s Gen 7 device tree
was introduced, as the Adreno X2-85 found in the Mahua SoC was not
supported yet. Until then, mahua.dtsi inherited the GPU and GMU nodes
from glymur.dtsi unchanged, describing them as Glymur's larger Adreno
X2-90, which is not what the Mahua hardware is.

Mahua's own GPU is now described: mahua.dtsi overrides the compatibles
with "qcom,adreno-44060000" and "qcom,adreno-gmu-x285.0", and the msm
driver carries a matching Adreno X2-85 entry. With that, the nodes
work as-is on this laptop, so drop the board-level overrides and let
them inherit the default enabled status.

Tested on a ThinkPad T14s Gen 7 (LCD): the GPU and GMU bind, the
gen80100 SQE/AQE/GMU firmware loads (GMU firmware v5.2.38), and Mesa
26.3.0-rc2 reports "Adreno (TM) X2-85" for both OpenGL 4.6 (freedreno)
and Vulkan (turnip).

Assisted-by: LLM
Signed-off-by: Lukas Märdian <lukas.maerdian@xxxxxxxxxxxxxxxx>
---
This depends on the Mahua GPU support series, specifically
"drm/msm/a8xx: Add Mahua GPU support" and "arm64: dts: qcom: mahua:
Support GPU and GMU", which are not merged yet:
https://lore.kernel.org/all/20260925-mahua-gpu-v1-0-0fa0bfd8d315@xxxxxxxxxxxxxxxx/

 .../dts/qcom/mahua-lenovo-thinkpad-t14s-gen7-lcd.dts     | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/mahua-lenovo-thinkpad-t14s-gen7-lcd.dts b/arch/arm64/boot/dts/qcom/mahua-lenovo-thinkpad-t14s-gen7-lcd.dts
index 255857cda9b..189dc3fe542 100644
--- a/arch/arm64/boot/dts/qcom/mahua-lenovo-thinkpad-t14s-gen7-lcd.dts
+++ b/arch/arm64/boot/dts/qcom/mahua-lenovo-thinkpad-t14s-gen7-lcd.dts
@@ -693,15 +693,6 @@ vreg_l4h_e0_1p2: ldo4 {
 	};
 };
 
-/* GPU/GMU not fully functional yet on this platform. */
-&gmu {
-	status = "disabled";
-};
-
-&gpu {
-	status = "disabled";
-};
-
 &i2c0 {
 	clock-frequency = <400000>;
 
-- 
2.53.0