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| author | Kuogee Hsieh <quic_khsieh@quicinc.com> | 2022-12-27 20:45:03 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-01-09 04:06:44 +0300 |
| commit | 0e7f270591a42f6c674d2410ac30e086ea0bf54d (patch) | |
| tree | fbe40ce9e70864d0dfc716bc11156d53db3f8554 /drivers/gpu/drm/msm/dp/dp_display.c | |
| parent | 381518a1677c49742a85f51e8f0e89f4b9b7d297 (diff) | |
| download | linux-0e7f270591a42f6c674d2410ac30e086ea0bf54d.tar.xz | |
drm/msm/dp: add support of max dp link rate
By default, HBR2 (5.4G) is the max link rate be supported. This patch
uses the actual limit specified by DT and removes the artificial
limitation to 5.4 Gbps. Supporting HBR3 is a consequence of that.
Changes in v2:
-- add max link rate from dtsi
Changes in v3:
-- parser max_data_lanes and max_dp_link_rate from dp_out endpoint
Changes in v4:
-- delete unnecessary pr_err
Changes in v5:
-- split parser function into different patch
Changes in v9:
-- revised commit test
Changes in v13:
-- repalced "properity" with "property"
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/516097/
Link: https://lore.kernel.org/r/1672163103-31254-6-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_display.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_display.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 031ebdcd689c..226a09f5e23e 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -393,6 +393,10 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp) struct edid *edid; dp->panel->max_dp_lanes = dp->parser->max_dp_lanes; + dp->panel->max_dp_link_rate = dp->parser->max_dp_link_rate; + + drm_dbg_dp(dp->drm_dev, "max_lanes=%d max_link_rate=%d\n", + dp->panel->max_dp_lanes, dp->panel->max_dp_link_rate); rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector); if (rc) |