
Akash Kumar developed a deterministic USB Device Controller (UDC) selection feature for the qualcomm-linux/meta-qcom repository, targeting improved ADB enumeration on platforms with multiple UDCs. He addressed non-deterministic binding by implementing a speed-based selection algorithm in Shell, ensuring the gadget binds to the controller with the highest maximum speed. This approach prioritized super-speed-plus and super-speed controllers over slower options, enhancing reliability and reducing startup time for ADB on Qualcomm System-on-Chips. Akash validated the solution on dual-UDC hardware, aligning the implementation with established USB gadget framework practices and leveraging his expertise in embedded systems, Linux development, and shell scripting.
February 2026: Delivered a deterministic UDC selection feature in qualcomm-linux/meta-qcom to improve ADB enumeration on multi-UDC platforms. Implemented speed-based binding that prioritizes the UDC with the highest maximum_speed (super-speed-plus > super-speed > high-speed > full-speed > low-speed), ensuring the gadget binds to the most capable controller. This addresses non-deterministic binding that previously selected the first UDC in directory order, improving reliability and startup time for ADB.
February 2026: Delivered a deterministic UDC selection feature in qualcomm-linux/meta-qcom to improve ADB enumeration on multi-UDC platforms. Implemented speed-based binding that prioritizes the UDC with the highest maximum_speed (super-speed-plus > super-speed > high-speed > full-speed > low-speed), ensuring the gadget binds to the most capable controller. This addresses non-deterministic binding that previously selected the first UDC in directory order, improving reliability and startup time for ADB.

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