[PATCH 2/4] drm/i915: Simplify combo PLL frac w/a

[Ville Syrjala <ville.syrjala@linux.intel.com>]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

We are applying the combo PLL frac w/a to all TGL+ platforms, except
RKL. I *think* all RKL machines use a 24 MHz refclk (certainly all
machines in our CI do) and so technically never need the adjustment.
But let's assume the hardware is exactly the same anyway and simplify
the code by applying the w/a to all TGL+ platforms.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 76ab55ee4b80..81ad6cbae6bb 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -2604,11 +2604,7 @@ ehl_combo_pll_div_frac_wa_needed(struct intel_display *display)
 {
 	return ((display->platform.elkhartlake &&
 		 IS_DISPLAY_STEP(display, STEP_B0, STEP_FOREVER)) ||
-		 display->platform.dg1 ||
-		 display->platform.tigerlake ||
-		 display->platform.alderlake_s ||
-		 display->platform.alderlake_p) &&
-		 display->dpll.ref_clks.nssc == 38400;
+		DISPLAY_VER(display) >= 12);
 }
 
 struct icl_combo_pll_params {
-- 
2.45.3