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.

Ville Syrjälä committed 4 years ago

Commit 13bd2591 parent a111daf1 file · +2 −2Browse files

Unified · Split

drivers/gpu/drm/i915/display/intel_dpll_mgr.c+2−2

@@ -2396,7 +2396,7 @@ static void icl_wrpll_params_populate(struct skl_wrpll_params *params, · 2395 unmodified lines
2396	2396	}
2397	2397
2398	2398	/*
2399		− * Display WA #22010492432: ehl, tgl, adl-p
	2399	+ * Display WA #22010492432: ehl, tgl, adl-s, adl-p
2400	2400	* Program half of the nominal DCO divider fraction value.
2401	2401	*/
2402	2402	static bool
@@ -2404,7 +2404,7 @@ ehl_combo_pll_div_frac_wa_needed(struct drm_i915_private *i915) · 1 unmodified line
2404	2404	{
2405	2405	return ((IS_PLATFORM(i915, INTEL_ELKHARTLAKE) &&
2406	2406	IS_JSL_EHL_DISPLAY_STEP(i915, STEP_B0, STEP_FOREVER)) \|\|
2407		− IS_TIGERLAKE(i915) \|\| IS_ALDERLAKE_P(i915)) &&
	2407	+ IS_TIGERLAKE(i915) \|\| IS_ALDERLAKE_S(i915) \|\| IS_ALDERLAKE_P(i915)) &&
2408	2408	i915->dpll.ref_clks.nssc == 38400;
2409	2409	}
2410	2410