diff --git a/common/tigerlake/hw-gfx-gma-plls-dekel_phy.ads b/common/tigerlake/hw-gfx-gma-plls-dekel_phy.ads
new file mode 100644
index 0000000..37f94fa
--- /dev/null
+++ b/common/tigerlake/hw-gfx-gma-plls-dekel_phy.ads
@@ -0,0 +1,29 @@
+--
+-- Copyright (C) 2022 Google, LLC
+--
+-- 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.
+--
+
+with HW.Debug;
+with GNAT.Source_Info;
+
+private package HW.GFX.GMA.PLLs.Dekel_Phy is
+
+   procedure On
+     (PLL      : in     DKL_DPLLs;
+      Port_Cfg : in     Port_Config;
+      Success  :    out Boolean);
+
+   procedure Free (PLL : DKL_DPLLs);
+
+   procedure All_Off;
+
+end HW.GFX.GMA.PLLs.Dekel_Phy;