Alderlake-P have different values for MBUS DBOX A credits depending
if MBUS join is enabled or not.
BSpec: 50343
BSpec: 54369
Cc: Matt Atwood <matthew.s.atwood@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 65ddb6ca16e67..fe380896eb99e 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3400,13 +3400,17 @@ static void glk_pipe_scaler_clock_gating_wa(struct drm_i915_private *dev_priv,
intel_de_write(dev_priv, CLKGATE_DIS_PSL(pipe), val);
}
-static void icl_pipe_mbus_enable(struct intel_crtc *crtc)
+static void icl_pipe_mbus_enable(struct intel_crtc *crtc, bool joined_mbus)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
u32 val;
- val = MBUS_DBOX_A_CREDIT(2);
+ /* Wa_22010947358:adl-p */
+ if (IS_ALDERLAKE_P(dev_priv))
+ val = joined_mbus ? MBUS_DBOX_A_CREDIT(6) : MBUS_DBOX_A_CREDIT(4);
+ else
+ val = MBUS_DBOX_A_CREDIT(2);
if (DISPLAY_VER(dev_priv) >= 12) {
val |= MBUS_DBOX_BW_CREDIT(2);
@@ -3561,8 +3565,12 @@ static void hsw_crtc_enable(struct intel_atomic_state *state,
if (dev_priv->display.initial_watermarks)
dev_priv->display.initial_watermarks(state, crtc);
- if (DISPLAY_VER(dev_priv) >= 11)
- icl_pipe_mbus_enable(crtc);
+ if (DISPLAY_VER(dev_priv) >= 11) {
+ const struct intel_dbuf_state *dbuf_state =
+ intel_atomic_get_new_dbuf_state(state);
+
+ icl_pipe_mbus_enable(crtc, dbuf_state->joined_mbus);
+ }
if (new_crtc_state->bigjoiner_slave)
intel_crtc_vblank_on(new_crtc_state);
--
2.32.0
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