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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Oct 2025 20:21:56.5047 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 67d74c01-4f89-44d0-3243-08de133afa90 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: AMS0EPF00000195.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV2PR08MB8002 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. 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 drivers/gpu/drm/panthor/Makefile | 1 + drivers/gpu/drm/panthor/panthor_device.c | 19 +- drivers/gpu/drm/panthor/panthor_device.h | 24 + drivers/gpu/drm/panthor/panthor_fw.c | 130 +++++- drivers/gpu/drm/panthor/panthor_fw.h | 32 +- drivers/gpu/drm/panthor/panthor_gpu.c | 11 +- drivers/gpu/drm/panthor/panthor_gpu.h | 1 + drivers/gpu/drm/panthor/panthor_hw.c | 113 ++++- drivers/gpu/drm/panthor/panthor_hw.h | 26 ++ drivers/gpu/drm/panthor/panthor_pwr.c | 548 +++++++++++++++++++++++ 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, 987 insertions(+), 41 deletions(-) create mode 100644 drivers/gpu/drm/panthor/panthor_pwr.c create mode 100644 drivers/gpu/drm/panthor/panthor_pwr.h -- 2.49.0