diff --git a/src/drivers/intel/gma/Kconfig b/src/drivers/intel/gma/Kconfig
index 9c0f227..23290d5 100644
--- a/src/drivers/intel/gma/Kconfig
+++ b/src/drivers/intel/gma/Kconfig
@@ -2,6 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ## Copyright 2013 Google Inc.
+## Copyright 2016-2017 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
@@ -37,6 +38,21 @@
 	bool
 	default n
 
+config INTEL_GMA_SSC_ALTERNATE_REF
+	bool
+	default n
+	help
+	  Set when the SSC reference clock for LVDS runs at a different fre-
+	  quency than the general display reference clock.
+
+	  To be set by northbridge or mainboard Kconfig.  For most platforms,
+	  there is no choice, i.e. for i945 and gm45 the SSC reference always
+	  differs from the display reference clock (i945: 66Mhz SSC vs. 48MHz
+	  DREF; gm45: 100MHz SSC vs. 96Mhz DREF), for Nehalem and newer, it's
+	  the same frequency for SSC/non-SSC (120MHz).  The only, currently
+	  supported platform with a choice seems to be Pineview, where the
+	  alternative is 100MHz vs. the default 96MHz.
+
 config GFX_GMA_CPU
 	string
 	default "Skylake" if SOC_INTEL_SKYLAKE
diff --git a/src/drivers/intel/gma/vbt.c b/src/drivers/intel/gma/vbt.c
index 0d76afe..d8dd930 100644
--- a/src/drivers/intel/gma/vbt.c
+++ b/src/drivers/intel/gma/vbt.c
@@ -2,6 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2013, 2014 Vladimir Serbinenko
+ * Copyright (C) 2017 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
@@ -59,7 +60,7 @@
 	genfeat->flexaim = 1;
 	genfeat->download_ext_vbt = 1;
 	genfeat->enable_ssc = conf->use_spread_spectrum_clock;
-	genfeat->ssc_freq = !conf->link_frequency_270_mhz;
+	genfeat->ssc_freq = IS_ENABLED(CONFIG_INTEL_GMA_SSC_ALTERNATE_REF);
 	genfeat->rsvd10 = 0x4;
 	genfeat->legacy_monitor_detect = 1;
 	genfeat->int_crt_support = 1;
diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
index 9a370d5..ea6933d 100644
--- a/src/northbridge/intel/gm45/Kconfig
+++ b/src/northbridge/intel/gm45/Kconfig
@@ -24,6 +24,7 @@
 	select VGA
 	select INTEL_EDID
 	select INTEL_GMA_ACPI
+	select INTEL_GMA_SSC_ALTERNATE_REF
 	select RELOCATABLE_RAMSTAGE
 
 config CBFS_SIZE
diff --git a/src/northbridge/intel/i945/Kconfig b/src/northbridge/intel/i945/Kconfig
index efe192b..18e90b6 100644
--- a/src/northbridge/intel/i945/Kconfig
+++ b/src/northbridge/intel/i945/Kconfig
@@ -24,6 +24,7 @@
 	select LAPIC_MONOTONIC_TIMER
 	select VGA
 	select INTEL_GMA_ACPI
+	select INTEL_GMA_SSC_ALTERNATE_REF
 	select RELOCATABLE_RAMSTAGE
 
 config NORTHBRIDGE_INTEL_SUBTYPE_I945GC