From 4347bf12761ad63810768b4653091a88f1dd1a3e Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Wed, 30 Jun 2021 08:27:51 +0200 Subject: [PATCH] drm/panfrost: Increase the AS_ACTIVE polling timeout Experience has shown that 1ms is sometimes not enough, even when the GPU is running at its maximum frequency, not to mention that an MMU operation might take longer if the GPU is running at a lower frequency, which is likely to be the case if devfreq is active. Let's pick a significantly bigger timeout value (1ms -> 100ms) to be on the safe side. v5: * New patch Signed-off-by: Boris Brezillon Reviewed-by: Steven Price Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-17-boris.brezillon@collabora.com --- drivers/gpu/drm/panfrost/panfrost_mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c index e0356e68e7680..0da5b3100ab1e 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -34,7 +34,7 @@ static int wait_ready(struct panfrost_device *pfdev, u32 as_nr) /* Wait for the MMU status to indicate there is no active command, in * case one is pending. */ ret = readl_relaxed_poll_timeout_atomic(pfdev->iomem + AS_STATUS(as_nr), - val, !(val & AS_STATUS_AS_ACTIVE), 10, 1000); + val, !(val & AS_STATUS_AS_ACTIVE), 10, 100000); if (ret) { /* The GPU hung, let's trigger a reset */ -- 2.39.5