RTC Subsystem, Recent Changes and Where it is Heading
Talkat Open Source Summit Europe + Embedded Linux Conference Europe 2019 · on Tuesday, 2019-10-29· at 17:10· Forum 3·
summary
Overview of kernel RTC work that moves from scattered driver hacks to a coherent device-property model: support for 28 platforms now, migration from the legacy alarm API removed to timer-based alarms, and addition of a crystal trimming enabled by default that compensates temperature/oscillator drift. New device attributes expose backup-power switch state, multipole battery inputs and selectable timestamping modes; alarm routing and device reporting are being refactored to let many diverse RTCs share one common API.
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chapters (8)
- 0:00Introduction
- 3:37RTC subsystem history
- 10:20Driver current issues
- 17:46Recent kernel improvements
- 25:30File and state management
- 31:08Mécanismes de basculement d'alimentation
- 36:44Future challenges
- 42:39Conclusion et questions
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