[PATCH v3 12/19] drm/i915/xe2hpd: Do not program MBUS_DBOX BW credits

[Radhakrishna Sripada]

From: José Roberto de Souza <jose.souza at intel.com>

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 at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan at intel.com>
Reviewed-by: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
---
 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 7c6187b4479f..be9a4712c54e 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;
-- 
2.34.1