WORKAROUND: Restore misco0 register on CPU idle exit#1362
Open
umang-chheda wants to merge 1 commit into
Open
Conversation
CPU system registers are reset on entry to the idle state, which clears the required bits in the misc0 cnd ctrl register and prevents CE/UE interrupts from firing. Register a PM notifier to restore the misc0 and ctrl registers on idle exit, ensuring that interrupts are correctly triggered. This is a temporary workaround and will be reverted once the proper fix is upstreamed in v2 of this series. Signed-off-by: Umang Chheda <umang.chheda@oss.qualcomm.com>
Author
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
CPU system registers are reset on entry to the idle state, which clears the required bits in the misc0 cnd ctrl register and prevents CE/UE interrupts from firing.
Register a PM notifier to restore the misc0 and ctrl registers on idle exit, ensuring that interrupts are correctly triggered.
This is a temporary workaround and will be reverted once the proper fix is upstreamed in v2 of this series.