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Explore power management strategies for heterogeneous System-on-Chip (SoC) architectures in this 33-minute conference talk from the Linux Foundation's Open Source Summit. Learn how to implement coordinated power management across multiple asymmetric multiprocessing cores running different operating systems to achieve optimal SoC-level low power states. Discover the critical role of communication between applications on co-processors when selecting suspend-to-RAM modes and understand how Linux remoteproc drivers should implement system suspend and resume functions that coordinate with firmware on remote cores. Gain insights into leveraging the remoteproc subsystem for graceful suspend and resume operations in heterogeneous SoCs, examine the current state of remoteproc drivers in the Linux kernel, and identify areas for improvement and optimization. The presentation also addresses existing blockers in upstreaming suspend-resume functionality specifically within Texas Instruments' remoteproc driver implementation.
