From e1696f1fc99dc0ff761a012230587b23dec064fb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ma=C3=ADra=20Canal?= Date: Sat, 30 May 2026 15:37:45 -0300 Subject: [PATCH] drm/v3d: Reduce PM runtime autosuspend delay MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Iago Toral Quiroga --- drivers/gpu/drm/v3d/v3d_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c index fc81dd1247e3..805d84435ee0 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.c +++ b/drivers/gpu/drm/v3d/v3d_drv.c @@ -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);