diff options
| author | Christian Hewitt <christianshewitt@gmail.com> | 2020-10-08 14:17:38 +0000 |
|---|---|---|
| committer | Steven Price <steven.price@arm.com> | 2020-10-09 16:57:27 +0100 |
| commit | c2df75ad2a9f205820e4bc0db936d3d9af3da1ae (patch) | |
| tree | c91f7ec99fe2588c735421c55d673b34356130d4 | |
| parent | 6561e0aa4627da90f59076fec5e3a1b72a8aa63f (diff) | |
drm/panfrost: increase readl_relaxed_poll_timeout values
Amlogic SoC devices report the following errors frequently causing excessive
dmesg log spam and early log rotataion, although the errors appear to be
harmless as everything works fine:
[ 7.202702] panfrost ffe40000.gpu: error powering up gpu L2
[ 7.203760] panfrost ffe40000.gpu: error powering up gpu shader
ARM staff have advised increasing the timeout values to eliminate the errors
in most normal scenarios, and testing with several different G31/G52 devices
shows 20000 to be a reliable value.
Fixes: f3ba91228e8e ("drm/panfrost: Add initial panfrost driver")
Suggested-by: Steven Price <steven.price@arm.com>
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201008141738.13560-1-christianshewitt@gmail.com
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_gpu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c index e1b2a3376624..2aae636f1cf5 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gpu.c +++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c @@ -325,13 +325,13 @@ void panfrost_gpu_power_on(struct panfrost_device *pfdev) /* Just turn on everything for now */ gpu_write(pfdev, L2_PWRON_LO, pfdev->features.l2_present); ret = readl_relaxed_poll_timeout(pfdev->iomem + L2_READY_LO, - val, val == pfdev->features.l2_present, 100, 1000); + val, val == pfdev->features.l2_present, 100, 20000); if (ret) dev_err(pfdev->dev, "error powering up gpu L2"); gpu_write(pfdev, SHADER_PWRON_LO, pfdev->features.shader_present); ret = readl_relaxed_poll_timeout(pfdev->iomem + SHADER_READY_LO, - val, val == pfdev->features.shader_present, 100, 1000); + val, val == pfdev->features.shader_present, 100, 20000); if (ret) dev_err(pfdev->dev, "error powering up gpu shader"); |