An Introduction to the DPLL Subsystem

Explore the Digital Phase Lock Loop (DPLL) subsystem in this 15-minute conference talk from the Linux Plumbers Conference. Dive into the importance of precise time synchronization for modern systems and learn how the DPLL subsystem addresses this need. Discover the role of NTP and PTP protocols in distributing time information across networks, and understand the hardware requirements for effective synchronization. Examine the growing adoption of SyncE and its impact on time synchronization approaches. Learn about the new DPLL subsystem's API, which enables configuration and monitoring of DPLL circuits for frequency syntonization across boards. Gain insights into the use of netlink as a transport protocol for this subsystem and its implications for Linux systems requiring rigorous time synchronization solutions.

An introduction to the DPLL subsystem - Vadim Fedorenko