[PATCH] drm/i915/display: Don't update DBUF_TRACKER_STATE_SERVICE

[Ravi Kumar Vodapalli]

While display initialization along with MBUS credits programming
DBUF_CTL register is also programmed, as a part of it the
DBUF_TRACKER_STATE_SERVICE is updated to 0x8 value when default
value is other than 0x8 for platforms
1. display version 12
2. DG2.
Other platforms unless stated should use their default value

Bspec: 49213
Signed-off-by: Ravi Kumar Vodapalli <ravi.kumar.vodapalli at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_power.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 34465d56def0..9c20459053fe 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -1126,9 +1126,6 @@ static void gen12_dbuf_slices_config(struct intel_display *display)
 {
 	enum dbuf_slice slice;
 
-	if (display->platform.alderlake_p)
-		return;
-
 	for_each_dbuf_slice(display, slice)
 		intel_de_rmw(display, DBUF_CTL_S(slice),
 			     DBUF_TRACKER_STATE_SERVICE_MASK,
@@ -1681,7 +1678,7 @@ static void icl_display_core_init(struct intel_display *display,
 	/* 4. Enable CDCLK. */
 	intel_cdclk_init_hw(display);
 
-	if (DISPLAY_VER(display) >= 12)
+	if (DISPLAY_VER(display) == 12 || display->platform.dg2)
 		gen12_dbuf_slices_config(display);
 
 	/* 5. Enable DBUF. */
-- 
2.25.1