[Backport v4.0.99-ncs1-branch] Reduce restore time when waking up from s2ram on nrf54h20 #2787
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…ossible Add nrf_cache_power_up and nrf_cache_power_down functions. In case of s2ram power up cache as early as possible, before restoring ARM core registers. It improves restore time from 180 us to 33 us. As a minor optimization nrf_memconf_ramblock_control_mask_enable_set is used which allows to control ram blocks for icache and dcache in a single register write. Signed-off-by: Krzysztof Chruściński <[email protected]> (cherry picked from commit a36b154) (cherry picked from commit da14f33)
…timing Update exit-latency-us with newly measured values. Measurement is taking into account additional timing compared to wakeup from WFI. Signed-off-by: Krzysztof Chruściński <[email protected]> (cherry picked from commit a4a6130) (cherry picked from commit d2534ea)
Cache was not enabled when s2ram did not completed which lead to system malfunction. Always power up cache when returning from s2ram function. Upstream PR #: 88709 Signed-off-by: Krzysztof Chruściński <[email protected]>
ISR safe runtime PM can only be used for all instances except for spis120 which requires standard runtime PM. Added compilation guard against using CONFIG_PM_DEVICE_SYSTEM_MANAGED with spis120. Signed-off-by: Krzysztof Chruściński <[email protected]> (cherry picked from commit 8d6ab28)
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This was referenced Apr 22, 2025
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