[PATCH AUTOSEL 5.16 39/52] drm/amdgpu/display: adjust msleep limit in dp_wait_for_training_aux_rd_interval

Sasha Levin
2022-02-03T20:32:56Z

From: Alex Deucher <alexander.deucher@amd.com>

[ Upstream commit dc919d670c6fd1ac81ebf31625cd19579f7b3d4c ]

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.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 13bc69d6b6791..01ac1a64c78b9 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
@@ -201,7 +201,7 @@ 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