linux-kernel - [PATCH v1 00/10] drm/panthor: Add support for Mali-G1 GPUs

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Message-ID: <20251014094337.1009601-1-karunika.choo@arm.com>
Date: Tue, 14 Oct 2025 10:43:27 +0100
From: Karunika Choo <karunika.choo@....com>
To: dri-devel@...ts.freedesktop.org
Cc: nd@....com,
	Boris Brezillon <boris.brezillon@...labora.com>,
	Steven Price <steven.price@....com>,
	Liviu Dudau <liviu.dudau@....com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 00/10] drm/panthor: Add support for Mali-G1 GPUs

This patch series extends the Panthor driver with basic support for
Mali-G1 GPUs.

The v14 architecture introduces several hardware and register-level
changes compared to prior GPUs. This series adds the necessary
architecture-specific support infrastructure, power control and reset
handling for Mali-G1 GPUs.

Patch Breakdown:
[Patch 1-4]:  Refactor panthor_hw to introduce architecture-specific
              hooks and abstractions to support the v14 architecture.
              These patches introduces architecture-specific HW binding
              for feature bits and function pointers.
[Patch 5-7]:  Adds basic L2 power on/off and soft reset support for the
              PWR_CONTROL block introduced in v14.
[Patch 8]:    Update MCU halt and warm boot operations to reflect the
              GLB_REQ.STATE changes in v14. This ensures that the MCU is
              properly halted and the correct operations are performed
              on warm boot depending on the FW version.
[Patch 9]:    Align endpoint_req with changes introduced in v14, where
              the register is widened to 64-bit and shifed down by
              4-bytes. This patch adds the necessary infrastructure to
              discern the correct endpoint_req register to use.
[Patch 10]:   Enables Mali-G1 support on Panthor by adding HW bindings
              for v14 architecture.

Kind regards,
Karunika Choo

Karunika Choo (10):
  drm/panthor: Factor out GPU_ID register read into separate function
  drm/panthor: Add arch-specific panthor_hw binding
  drm/panthor: Introduce framework for architecture-specific features
  drm/panthor: Add architecture-specific function operations
  drm/panthor: Introduce panthor_pwr API and power control framework
  drm/panthor: Implement L2 power on/off via PWR_CONTROL
  drm/panthor: Implement soft and fast reset via PWR_CONTROL
  drm/panthor: Support GLB_REQ.STATE field for Mali-G1 GPUs
  drm/panthor: Support 64-bit endpoint_req register for Mali-G1
  drm/panthor: Add support for Mali-G1 GPUs

 drivers/gpu/drm/panthor/Makefile         |   1 +
 drivers/gpu/drm/panthor/panthor_device.c |  18 +-
 drivers/gpu/drm/panthor/panthor_device.h |   8 +
 drivers/gpu/drm/panthor/panthor_fw.c     | 123 ++++-
 drivers/gpu/drm/panthor/panthor_fw.h     |  27 +-
 drivers/gpu/drm/panthor/panthor_gpu.c    |  13 +-
 drivers/gpu/drm/panthor/panthor_gpu.h    |   1 +
 drivers/gpu/drm/panthor/panthor_hw.c     | 107 ++++-
 drivers/gpu/drm/panthor/panthor_hw.h     |  50 ++
 drivers/gpu/drm/panthor/panthor_pwr.c    | 581 +++++++++++++++++++++++
 drivers/gpu/drm/panthor/panthor_pwr.h    |  25 +
 drivers/gpu/drm/panthor/panthor_regs.h   |  79 +++
 drivers/gpu/drm/panthor/panthor_sched.c  |  22 +-
 13 files changed, 1019 insertions(+), 36 deletions(-)
 create mode 100644 drivers/gpu/drm/panthor/panthor_pwr.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_pwr.h

-- 
2.49.0