diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_pps.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c index 7ce926241e83..0918eb218fc8 100644 --- a/drivers/gpu/drm/i915/display/intel_pps.c +++ b/drivers/gpu/drm/i915/display/intel_pps.c @@ -951,6 +951,14 @@ void intel_pps_on_unlocked(struct intel_dp *intel_dp) intel_de_posting_read(dev_priv, pp_ctrl_reg); } + /* + * WA: 22019252566 + * Disable DPLS gating around power sequence. + */ + if (IS_DISPLAY_VER(dev_priv, 13, 14)) + intel_de_rmw(dev_priv, SOUTH_DSPCLK_GATE_D, + 0, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); + pp |= PANEL_POWER_ON; if (!IS_IRONLAKE(dev_priv)) pp |= PANEL_POWER_RESET; @@ -961,6 +969,10 @@ void intel_pps_on_unlocked(struct intel_dp *intel_dp) wait_panel_on(intel_dp); intel_dp->pps.last_power_on = jiffies; + if (IS_DISPLAY_VER(dev_priv, 13, 14)) + intel_de_rmw(dev_priv, SOUTH_DSPCLK_GATE_D, + PCH_DPLSUNIT_CLOCK_GATE_DISABLE, 0); + if (IS_IRONLAKE(dev_priv)) { pp |= PANEL_POWER_RESET; /* restore panel reset bit */ intel_de_write(dev_priv, pp_ctrl_reg, pp); |