From: "Huang, ChiaWen" <ChiaWen.Huang@xxxxxxx>
[Why & How]
According to eDP spec, DPCD 1.3 is only for eDP DPCD v1.4
In dpcd_set_link_settings function, the driver is just above v1.3
Reviewed-by: Wenjing Liu <Wenjing.Liu@xxxxxxx>
Acked-by: Anson Jacob <Anson.Jacob@xxxxxxx>
Signed-off-by: ChiawenHuang <chiawen.huang@xxxxxxx>
---
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 cb7bf9148904..b21f61e89cba 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
@@ -430,7 +430,7 @@ enum dc_status dpcd_set_link_settings(
status = core_link_write_dpcd(link, DP_LANE_COUNT_SET,
&lane_count_set.raw, 1);
- if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_14 &&
+ if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_13 &&
lt_settings->link_settings.use_link_rate_set == true) {
rate = 0;
/* WA for some MUX chips that will power down with eDP and lose supported
--
2.25.1
