From: Wesley Chalmers <Wesley.Chalmers@xxxxxxx>
[ Upstream commit 3577e1678772ce3ede92af3a75b44a4b76f9b4ad ]
[WHY]
DISPCLK_MAX_ERRDET_CYCLES must be 7 to prevent connection loss when
changing DENTIST_DISPCLK_WDIVIDER from 126 to 127 and back.
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@xxxxxxx>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx>
Acked-by: Stylon Wang <stylon.wang@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 083c42e521f5..03a2e1d7f067 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -126,7 +126,7 @@ void dcn20_dccg_init(struct dce_hwseq *hws)
REG_WRITE(MILLISECOND_TIME_BASE_DIV, 0x1186a0);
/* This value is dependent on the hardware pipeline delay so set once per SOC */
- REG_WRITE(DISPCLK_FREQ_CHANGE_CNTL, 0x801003c);
+ REG_WRITE(DISPCLK_FREQ_CHANGE_CNTL, 0xe01003c);
}
void dcn20_display_init(struct dc *dc)
{
--
2.30.2
