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drm/rockchip: dw-dp: Add DP PHY max_link_rate limit

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Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
Change-Id: I2f4522af3b997cb0c3a6209bbe142e550782e2fc
This commit is contained in:
Wyon Bi
2022-06-11 09:07:03 +00:00
committed by Tao Huang
parent 8cfe3a4ed8
commit 15fdfc37fa
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/rockchip/dw-dp.c
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@@ -871,7 +871,8 @@ static int dw_dp_link_probe(struct dw_dp *dp)
!!(dpcd & DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED);
link->revision = link->dpcd[DP_DPCD_REV];
link->rate = drm_dp_max_link_rate(link->dpcd);
link->rate = min_t(u32, dp->phy->attrs.max_link_rate * 100,
drm_dp_max_link_rate(link->dpcd));
link->lanes = min_t(u8, phy_get_bus_width(dp->phy),
drm_dp_max_lane_count(link->dpcd));