diff options
| author | Fangzhi Zuo <jerry.zuo@amd.com> | 2026-10-24 12:55:24 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-11-04 12:27:16 -0500 |
| commit | fa19199dc93ccf09ff5aaee7014f4596280911f8 (patch) | |
| tree | a69c82a542de676b4cbd94f35013c61f1c78e5d4 | |
| parent | 4c5ec969b9b011e824f1850d7ffe4fa5c41ba890 (diff) | |
drm/edid: Parse HDMI 2.2 FRL rates from the SCDS
[Why]
drm_get_max_frl_rate() only decodes Max_FRL_Rate values 1-6, so a sink
advertising an HDMI 2.2 rate (7, 8 or 9) falls into the default case and
is reported as having no FRL support at all.
[How]
Decode the HDMI 2.2 Max_FRL_Rate values 7, 8 and 9 as 16, 20 and 24 Gbps
per lane over 4 lanes.
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 12d5a58d5bd747da992a04da44cfcaf711c8fef9)
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 3148038747b6..b8f882a17c8f 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -6194,6 +6194,18 @@ void drm_get_max_frl_rate(int max_frl_rate, u8 *max_lanes, u8 *max_rate_per_lane *max_lanes = 4; *max_rate_per_lane = 12; break; + case 7: + *max_lanes = 4; + *max_rate_per_lane = 16; + break; + case 8: + *max_lanes = 4; + *max_rate_per_lane = 20; + break; + case 9: + *max_lanes = 4; + *max_rate_per_lane = 24; + break; case 0: default: *max_lanes = 0; |