From: José Roberto de Souza <jose.souza@xxxxxxxxx>
Alderlake-P don't have programing sequences for MBUS or DBUF during
display initializaiton, instead it requires programing to those
registers during modeset because it to depend on the pipes left
enabled.
Bspec: 49213
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display_power.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 29d2f1d0cffd..26d2eba87486 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -5246,6 +5246,9 @@ static void gen12_dbuf_slices_config(struct drm_i915_private *dev_priv)
{
enum dbuf_slice slice;
+ if (IS_ALDERLAKE_P(dev_priv))
+ return;
+
for_each_dbuf_slice(dev_priv, slice)
intel_de_rmw(dev_priv, DBUF_CTL_S(slice),
DBUF_TRACKER_STATE_SERVICE_MASK,
@@ -5257,6 +5260,9 @@ static void icl_mbus_init(struct drm_i915_private *dev_priv)
unsigned long abox_regs = INTEL_INFO(dev_priv)->abox_mask;
u32 mask, val, i;
+ if (IS_ALDERLAKE_P(dev_priv))
+ return;
+
mask = MBUS_ABOX_BT_CREDIT_POOL1_MASK |
MBUS_ABOX_BT_CREDIT_POOL2_MASK |
MBUS_ABOX_B_CREDIT_MASK |
--
2.25.4
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