On Thu, Apr 20, 2023 at 03:40:43PM +0300, Mika Kahola wrote: > Use MPLLA for DP2.0 rates 20G and 20G, when ssc is enabled. >
Reviewed-by: Radhakrishna Sripada <radhakrishna.srip...@intel.com> - Radhakrishna(RK) Sripada > Signed-off-by: Mika Kahola <mika.kah...@intel.com> > --- > drivers/gpu/drm/i915/display/intel_cx0_phy.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c > b/drivers/gpu/drm/i915/display/intel_cx0_phy.c > index f7720acaf58c..4231ba98f075 100644 > --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c > +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c > @@ -2340,8 +2340,11 @@ static void intel_program_port_clock_ctl(struct > intel_encoder *encoder, > val |= XELPDP_DDI_CLOCK_SELECT(XELPDP_DDI_CLOCK_SELECT_MAXPCLK); > > /* TODO: HDMI FRL */ > - /* TODO: DP2.0 10G and 20G rates enable MPLLA*/ > - val |= crtc_state->cx0pll_state.ssc_enabled ? XELPDP_SSC_ENABLE_PLLB : > 0; > + /* DP2.0 10G and 20G rates enable MPLLA*/ > + if (crtc_state->port_clock == 1000000 || crtc_state->port_clock == > 2000000) > + val |= crtc_state->cx0pll_state.ssc_enabled ? > XELPDP_SSC_ENABLE_PLLA : 0; > + else > + val |= crtc_state->cx0pll_state.ssc_enabled ? > XELPDP_SSC_ENABLE_PLLB : 0; > > intel_de_rmw(i915, XELPDP_PORT_CLOCK_CTL(encoder->port), > XELPDP_LANE1_PHY_CLOCK_SELECT | > XELPDP_FORWARD_CLOCK_UNGATE | > -- > 2.34.1 >
