Equation for sending start/end SDP prior to the SU region start/end
has changed. Update used formula.
Bspec: 49274
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905102355.176622-2-jouni.hogander@intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
hblank_total = adjusted_mode->crtc_hblank_end - adjusted_mode->crtc_hblank_start;
hblank_ns = div_u64(1000000ULL * hblank_total, adjusted_mode->crtc_clock);
- /* From spec: (72 / number of lanes) * 1000 / symbol clock frequency MHz */
- req_ns = (72 / crtc_state->lane_count) * 1000 / (crtc_state->port_clock / 1000);
+ /* From spec: ((60 / number of lanes) + 11) * 1000 / symbol clock frequency MHz */
+ req_ns = ((60 / crtc_state->lane_count) + 11) * 1000 / (crtc_state->port_clock / 1000);
if ((hblank_ns - req_ns) > 100)
return true;