From: Alex Deucher <alexander.deucher@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: Alex Deucher <alexander.deucher@amd.com>
Subject: [PATCH 1/2] drm/amdgpu/display: adjust msleep limit in dp_wait_for_training_aux_rd_interval
Date: Thu, 20 Jan 2022 13:04:28 -0500 [thread overview]
Message-ID: <20220120180429.616236-1-alexander.deucher@amd.com> (raw)
Some architectures (e.g., ARM) have relatively low udelay limits.
On most architectures, anything longer than 2000us is not recommended.
Change the check to align with other similar checks in DC.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 1f8831156bc4..aa1c67c3c386 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -202,7 +202,7 @@ void dp_wait_for_training_aux_rd_interval(
uint32_t wait_in_micro_secs)
{
#if defined(CONFIG_DRM_AMD_DC_DCN)
- if (wait_in_micro_secs > 16000)
+ if (wait_in_micro_secs > 1000)
msleep(wait_in_micro_secs/1000);
else
udelay(wait_in_micro_secs);
--
2.34.1
next reply other threads:[~2022-01-20 18:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-20 18:04 Alex Deucher [this message]
2022-01-20 18:04 ` [PATCH 2/2] drm/amdgpu/display: use msleep rather than udelay for long delays Alex Deucher
2022-01-20 21:52 ` Harry Wentland
2022-01-25 11:32 ` Lazar, Lijo
2022-01-25 15:33 ` Harry Wentland
2022-01-25 16:23 ` Alex Deucher
2022-01-21 1:49 ` [PATCH 1/2] drm/amdgpu/display: adjust msleep limit in dp_wait_for_training_aux_rd_interval Chen, Guchun
2022-01-21 16:59 ` Deucher, Alexander
2022-01-23 13:48 ` Chen, Guchun
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