On Wed, Mar 11, 2026 at 05:05:55PM +0530, Ankit Nautiyal wrote: > DP v2.1 introduced support for sending AS SDP payload bytes for FAVT. > Add the relavant bits for the same. > > Signed-off-by: Ankit Nautiyal <[email protected]> > --- > include/drm/display/drm_dp.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h > index 49f0154eb93c..8d172863eba3 100644 > --- a/include/drm/display/drm_dp.h > +++ b/include/drm/display/drm_dp.h > @@ -1205,6 +1205,7 @@ > #define DP_DPRX_FEATURE_ENUMERATION_LIST_CONT_1 > 0x2214 /* 2.0 E11 */ > # define DP_ADAPTIVE_SYNC_SDP_SUPPORTED > BIT(0) > # define DP_AS_SDP_FIRST_HALF_LINE_OR_3840_PIXEL_CYCLE_WINDOW_NOT_SUPPORTED > BIT(1) > +# define DP_AS_SDP_FAVT_PAYLOAD_FIELDS_PARSING_SUPPORTED > BIT(2) /* 2.1 */
I wonder if this is what we should use to detect AS SDP v2 support? The rule is that we can't send AS SDP v2 unless the sink is DP-2.1 or eDP-1.5. eDP-1.5 we can supposedly identify from EDP_DPCD_REV (or EDP_REV as it's now called in eDP-1.5+), but AFAIK there is no real way to identify a DP-2.1 sink :/ Reviewed-by: Ville Syrjälä <[email protected]> > # define DP_VSC_EXT_SDP_FRAMEWORK_VERSION_1_SUPPORTED > BIT(4) > > #define DP_128B132B_SUPPORTED_LINK_RATES 0x2215 /* 2.0 */ > -- > 2.45.2 -- Ville Syrjälä Intel
