On 2026-10-28 20:44, Fangzhi Zuo wrote:
> The HDMI 2.2 spec defines three new FRL rates - 16, 20 and 24 Gbps per
> lane over 4 lanes (Max_FRL_Rate values 7, 8 and 9 in the HF-SCDB). The
> current code stops at the HDMI 2.1 ceiling of 12 Gbps per lane, so a
> sink that advertises an HDMI 2.2 rate is treated as having no FRL
> support at all and the link ends up trained far below what the sink
> actually supports.
>
> Patch 1 teaches the DRM EDID parser to decode the three new rates.
> Patch 2 maps them back to the FRL rate index used by DC in amdgpu_dm
> and extends the KUnit coverage.
>
Series is
Reviewed-by: Harry Wentland <[email protected]>
Harry
> Fangzhi Zuo (2):
> drm/edid: Parse HDMI 2.2 FRL rates from the SCDS
> drm/amd/display: Accept HDMI 2.2 FRL rates from the sink EDID
>
> .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 6 ++++
> .../amdgpu_dm/tests/amdgpu_dm_helpers_test.c | 30 +++++++++++++++++++
> drivers/gpu/drm/drm_edid.c | 12 ++++++++
> 3 files changed, 48 insertions(+)
>
