On Tue, 25 Nov 2025 12:55:40 +0000
Karunika Choo <karunika.choo@arm.com> wrote:
> 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 1-2]: Refactor panthor_hw to introduce architecture-specific
> hooks and abstractions to support the v14 architecture.
> These patches introduce architecture-specific HW binding
> for function pointers.
> [Patch 3-5]: Adds basic L2 power on/off and soft reset support for the
> PWR_CONTROL block introduced in v14.
> [Patch 6]: 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 7]: 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 8]: Enables Mali-G1 support on Panthor by adding HW bindings
> for v14 architecture, product names and path to FW binary.
>
> v5:
> * Rebased patch series on more recent drm-misc-next (ac364014)
> * Picked up R-bs from Steve.
> * Link to v4: https://lore.kernel.org/all/20251107142440.1134528-1-karunika.choo@arm.com/
> v4:
> * Fixed include and forward declaration issues.
> * Addressed code format issues.
> * Picked up R-bs from Steve.
> * Link to v3: https://lore.kernel.org/all/20251027161334.854650-1-karunika.choo@arm.com/
> v3:
> * Updated include logic to enable static inline functions in
> panthor_hw.h for function pointers and feature checks.
> * Fixed missed replacement of CSF_IFACE_VERSION check with
> panthor_fw_has_glb_state() check.
> * Link to v2: https://lore.kernel.org/all/20251024202117.3241292-1-karunika.choo@arm.com/
> v2:
> * Merged GPU_ID refactoring patch with the arch-specific panthor_hw
> binding patch (formerly PATCH 01/10 and PATCH 02/10).
> * Dropped panthor_hw feature bitmap patch in favor of functions that
> performs the relevant architecture version checks.
> * Fixed kernel test bot warnings.
> * Replaced function pointer accessor MACROs with static inline
> functions.
> * Refined power control logic, removed unnecessary checks and redundant
> stubs.
> * Replaced explicit CSG_IFACE_VERSION checks with functions describing
> the feature being checked for.
> * General readability improvements, more consistent error handling,
> behaviour clarifications, and formatting fixes.
> * Link to v1: https://lore.kernel.org/all/20251014094337.1009601-1-karunika.choo@arm.com/
>
>
> Karunika Choo (8):
> drm/panthor: Add arch-specific panthor_hw binding
> 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 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
Queued to drm-misc-next.
Thanks,
Boris
>
> 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 | 131 +++++-
> drivers/gpu/drm/panthor/panthor_fw.h | 32 +-
> drivers/gpu/drm/panthor/panthor_gpu.c | 12 +-
> drivers/gpu/drm/panthor/panthor_gpu.h | 1 +
> drivers/gpu/drm/panthor/panthor_hw.c | 107 ++++-
> drivers/gpu/drm/panthor/panthor_hw.h | 47 +-
> drivers/gpu/drm/panthor/panthor_pwr.c | 549 +++++++++++++++++++++++
> drivers/gpu/drm/panthor/panthor_pwr.h | 23 +
> drivers/gpu/drm/panthor/panthor_regs.h | 79 ++++
> drivers/gpu/drm/panthor/panthor_sched.c | 21 +-
> 13 files changed, 989 insertions(+), 40 deletions(-)
> create mode 100644 drivers/gpu/drm/panthor/panthor_pwr.c
> create mode 100644 drivers/gpu/drm/panthor/panthor_pwr.h
>
> --
> 2.49.0
>