[PATCH 0/2] Fix Panfrost boot hang on NanoPi M5

[Leonard Lausen]

On the NanoPi M5, boot hangs during Panfrost initialization. Before this
fix, booting required blacklisting Panfrost on the kernel command line.
Loading Panfrost after boot reports a GPU power-domain acknowledgment
timeout.

Enable regulator management for the RK3576 GPU power domain and connect
its supply to the NanoPi M5 GPU rail.

The regulator-capable descriptor is based on Jiaxing Hu's RK3576 NPU work:
https://lore.kernel.org/all/20260924102135.92217-10-gahing@gahingwoo.com/

On the NanoPi M5 with CONFIG_DRM_PANFROST=m, boot and Panfrost
initialization succeed, and GPU workloads run successfully. W=1 driver
and DTB builds and schema validation pass.

Leonard Lausen (2):
  pmdomain: rockchip: Manage the RK3576 GPU domain supply
  arm64: dts: rockchip: Fix GPU domain supply on NanoPi M5

 arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts |  4 ++++
 arch/arm64/boot/dts/rockchip/rk3576.dtsi          |  2 +-
 drivers/pmdomain/rockchip/pm-domains.c            | 10 +++++++---
 3 files changed, 12 insertions(+), 4 deletions(-)


base-commit: c03c1a14507dfaf8b856c2608f9ac216021fc222
-- 
2.47.3