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Explore the challenges and solutions for hotplugging non-discoverable hardware components in Linux systems through this 50-minute conference talk from the Linux Foundation. Discover how industrial products and developer boards are increasingly designed with add-on components that can be connected at runtime using buses like I²C, MIPI CSI-2, LVDS, interrupts, and GPIO lines. Learn about the ongoing kernel development work using device tree overlays to support such hardware configurations. Examine the specific challenges within the DRM subsystem, which presents the most complex scenarios for hotplug support. Understand the concept of connectors and their implications for operating systems, along with methods for describing connectors and add-ons using device tree overlays. Delve into the technical aspects of making DRM bridges removable and the current progress in hotplugging within DRM subsystems. Gain insights into use cases, implementation goals, and future development directions for non-discoverable hardware hotplug support in Linux.
