Timed I/O - Introducing Precisely Timed Platform I/O Driven by the System Clock

Explore a 56-minute conference talk from the Linux Plumbers Conference that delves into Intel's Timed I/O capability for 11th generation and later platforms. Learn about the hardware-implemented precision of output trigger and input timestamp operations, synchronized with the platform clock. Discover how Timed I/O is utilized for exporting and importing time to the platform, including examples of GPS time synchronization and external device clock discipline. Compare the advantages of Timed I/O over traditional GPIO in terms of precision and clock correlation. Examine the proposal for a new Timed I/O device type in Linux, supporting precise hardware timestamping and actuation of input and output signals based on the system clock. Gain insights into the functionality of Timed I/O devices, including edge scheduling, frequency adjustment, and input event timestamping and counting.