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Learn how to implement Linux DRM driver support for modern SoCs featuring multiple display controllers with heterogeneous interfaces in this technical conference talk. Explore the architectural challenges and design considerations when working with systems like TI's AM62P SoC, which integrates two display controllers, a GPU, and multiple interfaces including DSI, DPI/HDMI, and OLDI to support diverse panels and bridge devices. Compare two primary implementation approaches: integrating multiple controllers under a single DRM card versus exposing them as separate DRM cards, examining the advantages and disadvantages of each method. Discover the architectural modifications required to support dual OLDI bridges that can be multiplexed between controllers, enabling flexible configurations such as dual-link operation from a single controller or dual single-link operation from separate controllers. Understand the complexities involved in DSI bridge integration, particularly regarding crtc-encoder-bridge operation sequences, and learn how bridge APIs can be leveraged to support custom sequences for bridge operations. Gain insights into enabling advanced use-cases like multi-display setups, content mirroring, and screen extension through proper Linux kernel driver implementation for heterogeneous display controller architectures.
