[v2,0/6] drm/v3d: Fix GPU reset issues on the Raspberry Pi 5

Message

Maíra Canal March 8, 2025, 2:33 p.m. UTC

This series addresses GPU reset issues reported in [1], where running a
long compute job would trigger repeated GPU resets, leading to a UI
freeze.

Patches #1 and #2 prevent the same faulty job from being resubmitted in a
loop, mitigating the first cause of the issue.

However, the issue isn't entirely solved. Even with only a single GPU
reset, the UI still freezes on the Raspberry Pi 5, indicating a GPU hang.
Patches #3 to #5 address this by properly configuring the V3D_SMS
registers, which are required for power management and resets in V3D 7.1.

Patch #6 updates the DT maintainership, replacing Emma with the current
v3d driver maintainer.

[1] https://github.com/raspberrypi/linux/issues/6660

Best Regards,
- Maíra

---
v1 -> v2:
- [1/6, 2/6, 5/6] Add Iago's R-b (Iago Toral)
- [3/6] Use V3D_GEN_* macros consistently throughout the driver (Phil Elwell)
- [3/6] Don't add Iago's R-b in 3/6 due to changes in the patch
- [4/6] Add per-compatible restrictions to enforce per‐SoC register rules (Conor Dooley)
- [6/6] Add Emma's A-b, collected through IRC (Emma Anholt)
- [6/6] Add Rob's A-b (Rob Herring)
- Link to v1: https://lore.kernel.org/r/[e-mail]

---
Maíra Canal (6):
      drm/v3d: Don't run jobs that have errors flagged in its fence
      drm/v3d: Set job pointer to NULL when the job's fence has an error
      drm/v3d: Associate a V3D tech revision to all supported devices
      dt-bindings: gpu: v3d: Add SMS to the registers' list
      drm/v3d: Use V3D_SMS registers for power on/off and reset on V3D 7.x
      dt-bindings: gpu: Add V3D driver maintainer as DT maintainer

 .../devicetree/bindings/gpu/brcm,bcm-v3d.yaml      |  62 +++++++++-
 drivers/gpu/drm/v3d/v3d_debugfs.c                  | 126 ++++++++++-----------
 drivers/gpu/drm/v3d/v3d_drv.c                      |  62 +++++++++-
 drivers/gpu/drm/v3d/v3d_drv.h                      |  22 +++-
 drivers/gpu/drm/v3d/v3d_gem.c                      |  27 ++++-
 drivers/gpu/drm/v3d/v3d_irq.c                      |   6 +-
 drivers/gpu/drm/v3d/v3d_perfmon.c                  |   4 +-
 drivers/gpu/drm/v3d/v3d_regs.h                     |  26 +++++
 drivers/gpu/drm/v3d/v3d_sched.c                    |  29 ++++-
 9 files changed, 271 insertions(+), 93 deletions(-)
---
base-commit: 2c7aafc05c8330be4c5f0092b79843507a5e1023
change-id: 20250224-v3d-gpu-reset-fixes-2d21fc70711d