drm/v3d: Increase the autosuspend delay#7284
Merged
pelwell merged 1 commit intoraspberrypi:rpi-6.18.yfrom Mar 24, 2026
Merged
Conversation
The downstream implementation of power management for v3d used a 100ms delay and it has been tested for many years with success. Use the same delay with the runtime PM implementation. Although the shorter 50ms delay is not problematic in RPi 5, it can cause occasional GPU resets on RPi 4 during intensive workloads, due to the overhead of negotiating with the ASB bridge during frequent power domain transitions. Signed-off-by: Maíra Canal <mcanal@igalia.com>
Contributor
|
Thanks! |
popcornmix
added a commit
to raspberrypi/firmware
that referenced
this pull request
Mar 24, 2026
kernel: Backport DRM background color property from drm-misc-next, and implement for vc4 See: raspberrypi/linux#7280 kernel: drm/v3d: Increase the autosuspend delay See: raspberrypi/linux#7284
popcornmix
added a commit
to raspberrypi/rpi-firmware
that referenced
this pull request
Mar 24, 2026
kernel: Backport DRM background color property from drm-misc-next, and implement for vc4 See: raspberrypi/linux#7280 kernel: drm/v3d: Increase the autosuspend delay See: raspberrypi/linux#7284
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
2 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
The downstream implementation of power management for v3d used a 100ms delay and it has been tested for many years with success. Use the same delay with the runtime PM implementation.
Although the shorter 50ms delay is not problematic in RPi 5, it can cause occasional GPU resets on RPi 4 during intensive workloads, due to the overhead of negotiating with the ASB bridge during frequent power domain transitions.
I observed this issue while running some high definition traces in RPi 4. Considering that the downstream implementation used to use a 100ms delay, I believe it would be safer to keep the delay that was already widely tested. With a 100ms delay, I wasn't able to reproduce the GPU resets anymore.