On Fri, 2018-10-05 at 10:51 -0700, Dhinakaran Pandiyan wrote: > On Fri, 2018-10-05 at 10:38 -0700, Rodrigo Vivi wrote: > > On Thu, Oct 04, 2018 at 08:01:30PM -0700, Dhinakaran Pandiyan > > wrote: > > > PSR2 sinks that require Y coordinates for selective update also > > > need the > > > Y coordinate Valid bit in VSC SDP. > > > Spec: eDP 1.4b VSC payload extension for PSR2 operation (Table 6- > > > 12) > > > > I couldn't get any meaningful information about Y coordinate valid > > bit > > looking at this table... > > > > what am I missing? > " > Y-Coordinate_Valid > If the Sink device indicates that Y-coordinate is required, the > Source > device must program HB2 (VSC Revision Number) to 04h or 05h. > Additionally, the Source device must set this bit to 1 to indicate > that > the Y-coordinate provided in DB12 through DB13 is valid. However, if > the Y-coordinate provided in DB12 through DB13 is not valid, this bit > must be cleared to 0 (this includes when DB12 through DB13 are not > set > and remain at a default value of 0000h, because a Y-coordinate value > of > 0000h represents the first active video line)." > > We enable PSR2 only when the sink says Y-coordinate is required and > the > hardware needs to be told to send Y coordinate valid bit in the VSC > packets for such sinks. > > > > > Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx > > > > > > > --- > > > drivers/gpu/drm/i915/intel_psr.c | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > diff --git a/drivers/gpu/drm/i915/intel_psr.c > > > b/drivers/gpu/drm/i915/intel_psr.c > > > index 105b7ea2cd98..92672954dfef 100644 > > > --- a/drivers/gpu/drm/i915/intel_psr.c > > > +++ b/drivers/gpu/drm/i915/intel_psr.c > > > @@ -431,7 +431,7 @@ static void hsw_activate_psr2(struct intel_dp > > > *intel_dp) > > > * good enough. */ > > > val |= EDP_PSR2_ENABLE | EDP_SU_TRACK_ENABLE; > > > if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) > > > - val |= EDP_Y_COORDINATE_ENABLE; > > > + val |= EDP_Y_COORDINATE_ENABLE | > > > EDP_Y_COORDINATE_VALID; > > > > But also, this seems to be doing the opposite what you wrote on the > > commit message since this bit means: > > > > "Do not include Y-coordinate valid eDP 1.4" (Bspec: 7713) > > Oops! You are right, the bit name threw me off. When I added this bit I first named it "EDP_Y_COORDINATE_INVALID" but was decided to go back to BSpec name. > > > > > > > > if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us >= 0 && > > > dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 50) > > > -- > > > 2.14.1 > > > > > > _______________________________________________ > > > Intel-gfx mailing list > > > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > > > https://lists.freedesktop.org/mailman/listinfo/intel-gfx > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
