Am Montag, 19. August 2024, 13:25:08 CEST schrieb Mary Guillemard: > Expose timestamp information supported by the GPU with a new device > query. > > Mali uses an external timer as GPU system time. On ARM, this is wired to > the generic arch timer so we wire cntfrq_el0 as device frequency. > > This new uAPI will be used in Mesa to implement timestamp queries and > VK_KHR_calibrated_timestamps. > > Since this extends the uAPI and because userland needs a way to advertise > those features conditionally, this also bumps the driver minor version. > > v2: > - Rewrote to use GPU timestamp register > - Added timestamp_offset to drm_panthor_timestamp_info > - Add missing include for arch_timer_get_cntfrq > - Rework commit message > > v3: > - Add panthor_gpu_read_64bit_counter > - Change panthor_gpu_read_timestamp to use > panthor_gpu_read_64bit_counter > > Signed-off-by: Mary Guillemard <mary.guillemard@xxxxxxxxxxxxx> On a rk3588-tiger with matching MESA build and "RUSTICL_ENABLE=panfrost clpeak" Tested-by: Heiko Stuebner <heiko@xxxxxxxxx>
