From: José Roberto de Souza <jose.souza@xxxxxxxxx>
No display IP beyond Xe_LPD+ has "BW credits" bits in MBUS_DBOX_CTL
register. Restrict the programming only to Xe_LPD+.
BSpec: 49213
CC: Matt Roper <matthew.d.roper@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/skl_watermark.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index 8436af8525da..baa4b5ad96b7 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -3604,7 +3604,7 @@ static void intel_mbus_dbox_update(struct intel_atomic_state *state)
for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc, new_dbuf_state->active_pipes) {
u32 pipe_val = val;
- if (DISPLAY_VER(i915) >= 14) {
+ if (DISPLAY_VER_FULL(i915) == IP_VER(14, 0)) {
if (xelpdp_is_only_pipe_per_dbuf_bank(crtc->pipe,
new_dbuf_state->active_pipes))
pipe_val |= MBUS_DBOX_BW_8CREDITS_MTL;
--
2.25.1
