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drm/v3d: Reduce PM runtime autosuspend delay

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The 100ms autosuspend delay was only ever a workaround: shorter delays
caused more frequent runtime suspend/resume cycles on the BCM2711
(Raspberry Pi 4), which exposed the cache and MMU coherency bugs as
random GPU hangs.

With those hangs resolved, the inflated delay is no longer necessary.
Reduce it from 100ms to 50ms so the GPU power domain can be released
sooner once the GPU goes idle.

Link: https://patch.msgid.link/20260530-v3d-fix-rpi4-freezes-v1-4-c2c8307da6ce@igalia.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Maíra Canal 2026-05-30 15:37:45 -03:00
parent 17cdb54644
commit e1696f1fc9
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GPG Key ID: 3FF30E8A7688FAAA
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/v3d/v3d_drv.c
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@ -420,7 +420,7 @@ static int v3d_platform_drm_probe(struct platform_device *pdev)
ident3 = V3D_READ(V3D_HUB_IDENT3);
v3d->rev = V3D_GET_FIELD(ident3, V3D_HUB_IDENT3_IPREV);
pm_runtime_set_autosuspend_delay(dev, 100);
pm_runtime_set_autosuspend_delay(dev, 50);
pm_runtime_use_autosuspend(dev);
ret = drm_dev_register(drm, 0);