[PATCH 4/4] drm/v3d: Reduce PM runtime autosuspend delay

[Maíra Canal <mcanal@igalia.com>]

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.

Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
 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);

-- 
2.54.0