On Thu Dec 11, 2025 at 5:38 PM CET, Kory Maincent (TI.com) wrote: > Migrate CRTC mode configuration to use standard DRM bus flags in > preparation for removing the tilcdc_panel driver and its custom > tilcdc_panel_info structure. > > Add support for DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE and > DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE flags to control pixel clock and sync > signal edge polarity, while maintaining backward compatibility with the > existing tilcdc panel info structure. > > Simplify several hardware parameters by setting them to fixed defaults > based on common usage across existing device trees: > - DMA burst size: 16 (previously configurable via switch statement) > - AC bias frequency: 255 (previously panel-specific) > - FIFO DMA request delay: 128 (previously panel-specific) > > These parameters show no variation in real-world usage, so hardcoding > them simplifies the driver without losing functionality. > > Preserve FIFO threshold configurability by detecting the SoC type, as > this parameter varies between AM33xx (8) and DA850 (16) platforms. > > Signed-off-by: Kory Maincent (TI.com) <[email protected]>
Reviewed-by: Luca Ceresoli <[email protected]> -- Luca Ceresoli, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
