fw_devlink and parallelization updates
summary
Firmware devlink now offers a kernel command line driver_async_probe= (star for default async plus comma-separated denylist), a deferred-probe timeout that extends until the last driver registers, and an optional strict mode firmware_devlink.strict=1 that treats dependencies as mandatory until timeout. Cyclic device-link handling is improved with lazy DT compatible parsing and flipped child/parent supplier cases covered. Android gets parallel module loading via androidboot.loadmodulesparallel=1. Work continues on moving defer-checks into core and on policies for parallel suspend/resume (suggested 250 µs threshold).
AI-written summary · about
chapters (8)
- 0:00Introduction and overview
- 0:23Upstream status and goals
- 2:32Cyclic dependencies challenges
- 4:57Framework improvements
- 6:19Class device and sync state
- 7:44Parallelization updates
- 9:08Parallel suspend resume plans
- 10:53Q&A and discussion
related talks
22mImproving fw_devlink dependency tracking
39mUnravelling How Firmware Interacts with the Linux Subsystem
46mEarly Platform Drivers in Linux Kernel
14mPCI Pwrctrl woes
50mHotplug of Non-discoverable Hardware: Status and Future Directions
05mTalks Android, ARM and LWN
40mSecond Source Component Probing on Device Tree Platforms
15mPixel 6 support upstream and on android-mainline
