FRL (Fixed Rate Link) was gated behind the DC_FRL_MASK feature flag, leaving it disabled unless a user explicitly opted in via the amdgpu.dcfeaturemask module parameter.
Invert the DC_FRL_MASK check so init_data.flags.enable_frl defaults to true, and repurpose the mask bit as an opt-out for users who need to fall back to TMDS-only signalling. Update the DC_FEATURE_MASK documentation accordingly. Signed-off-by: Fangzhi Zuo <[email protected]> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++- drivers/gpu/drm/amd/include/amd_shared.h | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index a27c1fa74994..bf5369cc8b13 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -555,7 +555,8 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) if (amdgpu_dc_feature_mask & DC_DISABLE_LTTPR_DP2_0) init_data.flags.allow_lttpr_non_transparent_mode.bits.DP2_0 = true; - if (amdgpu_dc_feature_mask & DC_FRL_MASK) + /* FRL is enabled by default; DC_FRL_MASK can be set to opt out. */ + if (!(amdgpu_dc_feature_mask & DC_FRL_MASK)) init_data.flags.enable_frl = true; init_data.flags.seamless_boot_edp_requested = false; diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h index e3baef809cd1..87eea3360450 100644 --- a/drivers/gpu/drm/amd/include/amd_shared.h +++ b/drivers/gpu/drm/amd/include/amd_shared.h @@ -287,7 +287,7 @@ enum DC_FEATURE_MASK { */ DC_REPLAY_MASK = (1 << 9), /** - * @DC_FRL_MASK: (0x400) disabled by default + * @DC_FRL_MASK: (0x400) enabled by default; set to disable FRL */ DC_FRL_MASK = (1 << 10), }; -- 2.53.0
