On Fri, Nov 02, 2018 at 12:22:15PM -0700, Rodrigo Vivi wrote: > On Fri, Nov 02, 2018 at 08:07:06PM +0200, Imre Deak wrote: > > On ICL DMC/PCODE retains the HW context only for port A across DC > > transitions, for the other port B combo PHY, it doesn't. So we need to > > do this manually after exiting from DC6. Do the reinit even after > > exiting from DC5, it won't hurt since we only reinit the PHY in case > > it's needed (in case it was disabled to begin with). > > > > As can be guessed from the bugzilla report leaving the PHY uninited will > > lead to a later timeout during the port B specific AUX and DDI_IO power > > well enabling. > > > > Bspec: 21257 > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108070 > > Cc: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> > > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > Cc: José Roberto de Souza <jose.souza@xxxxxxxxx> > > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> > > Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx> > > --- > > drivers/gpu/drm/i915/intel_runtime_pm.c | 8 ++++++++ > > 1 file changed, 8 insertions(+) > > > > diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c > > index f8da471e81aa..763912c0245c 100644 > > --- a/drivers/gpu/drm/i915/intel_runtime_pm.c > > +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c > > @@ -843,6 +843,14 @@ static void gen9_dc_off_power_well_enable(struct drm_i915_private *dev_priv, > > > > if (IS_GEN9_LP(dev_priv)) > > bxt_verify_ddi_phy_power_wells(dev_priv); > > + > > + if (IS_ICELAKE(dev_priv)) > > maybe INTEL_GEN(dev_priv) >= 11? Ok, will change it. > > > with or without: > > Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> > > > > > + /* > > + * DMC retains HW context only for port A, the other combo > > + * PHY's HW context for port B is lost after DC transitions, > > + * so we need to restore it manually. > > + */ > > + icl_combo_phys_init(dev_priv); > > } > > > > static void gen9_dc_off_power_well_disable(struct drm_i915_private *dev_priv, > > -- > > 2.13.2 > > _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
