On Wed, Oct 16, 2024 at 04:24:04PM +0300, Imre Deak wrote:
> The DP sink's capabilities, like DSC, may depend on the source OUI
> written to the sink. On eDP this OUI value could have been reset before
> the detection started if the panel power on it got disabled. Make sure
> the OUI is re-written at the beginning of detection in this case, before
> the sink capabilities are read out.
>
> Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_dp.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 520cc6f50a126..063fe92d43786 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5669,6 +5669,8 @@ intel_dp_detect(struct drm_connector *connector,
> goto out_unset_edid;
> }
>
> + intel_dp_init_source_oui(intel_dp);
> +
> ret = intel_dp_tunnel_detect(intel_dp, ctx);
> if (ret == -EDEADLK) {
> status = ret;
> --
> 2.44.2
--
Ville Syrjälä
Intel
