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| author | Jouni Högander <jouni.hogander@intel.com> | 2022-09-05 13:23:54 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-09-13 12:05:04 +0300 |
| commit | eccfba1785b52887d0aa4d2940a396afd53f0054 (patch) | |
| tree | 6f32ce9f86eaa3f3795a362ef82083a44df79880 /drivers/gpu/drm/i915/display/intel_psr.c | |
| parent | 1bba5543e4fe7f60480fee370eb260618ee98282 (diff) | |
| download | linux-eccfba1785b52887d0aa4d2940a396afd53f0054.tar.gz linux-eccfba1785b52887d0aa4d2940a396afd53f0054.tar.bz2 linux-eccfba1785b52887d0aa4d2940a396afd53f0054.zip | |
drm/i915/psr: Equation changed for sending start/stop on prior line
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>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_psr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_psr.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 079b7d3d0c53..6f03bf16d6f4 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -805,8 +805,8 @@ static bool _compute_psr2_sdp_prior_scanline_indication(struct intel_dp *intel_d 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; |