diff --git a/common/broxton/hw-gfx-gma-spll.ads b/common/broxton/hw-gfx-gma-spll.ads
new file mode 100644
index 0000000..571dde9
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+++ b/common/broxton/hw-gfx-gma-spll.ads
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+--
+-- Copyright (C) 2016 secunet Security Networks AG
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 2 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+
+package HW.GFX.GMA.SPLL is
+
+   -- Just for a common interface with Haswell's DDI.
+   -- There is no SPLL (no FDI) on Broxton.
+
+   procedure On is null;
+
+   procedure Off is null;
+
+end HW.GFX.GMA.SPLL;