From: José Roberto de Souza Date: Tue, 14 Sep 2021 21:25:04 +0000 (-0700) Subject: drm/i915/display: Wait at least 2 frames before selective update X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ce0eacbbd922b91ce28523b167ef848d0f76f908;p=linux.git drm/i915/display: Wait at least 2 frames before selective update BSpec states that the minimum number of frames before selective update is 2, so making sure this minimum limit is fulfilled. BSpec: 50422 Reviewed-by: Gwan-gyeong Mun Cc: Gwan-gyeong Mun Signed-off-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20210914212507.177511-2-jose.souza@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 36816abb3bcc0..567c7ceef8dba 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -510,7 +510,7 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp) if (DISPLAY_VER(dev_priv) >= 10 && DISPLAY_VER(dev_priv) <= 12) val |= EDP_Y_COORDINATE_ENABLE; - val |= EDP_PSR2_FRAME_BEFORE_SU(intel_dp->psr.sink_sync_latency + 1); + val |= EDP_PSR2_FRAME_BEFORE_SU(max_t(u8, intel_dp->psr.sink_sync_latency + 1, 2)); val |= intel_psr2_get_tp_time(intel_dp); /* Wa_22012278275:adl-p */