Commit d36bdd77 authored by Ville Syrjälä's avatar Ville Syrjälä

drm/i915: Implement w/a 22010492432 for adl-s

adl-s needs the combo PLL DCO fraction w/a as well.
Gets us slightly more accurate clock out of the PLL.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220613201439.23341-1-ville.syrjala@linux.intel.comReviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
parent a50cc495
......@@ -2459,7 +2459,7 @@ static void icl_wrpll_params_populate(struct skl_wrpll_params *params,
}
/*
* Display WA #22010492432: ehl, tgl, adl-p
* Display WA #22010492432: ehl, tgl, adl-s, adl-p
* Program half of the nominal DCO divider fraction value.
*/
static bool
......@@ -2467,7 +2467,7 @@ ehl_combo_pll_div_frac_wa_needed(struct drm_i915_private *i915)
{
return ((IS_PLATFORM(i915, INTEL_ELKHARTLAKE) &&
IS_JSL_EHL_DISPLAY_STEP(i915, STEP_B0, STEP_FOREVER)) ||
IS_TIGERLAKE(i915) || IS_ALDERLAKE_P(i915)) &&
IS_TIGERLAKE(i915) || IS_ALDERLAKE_S(i915) || IS_ALDERLAKE_P(i915)) &&
i915->dpll.ref_clks.nssc == 38400;
}
......
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