diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 699b71e..85b53a4 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -6,10 +6,22 @@ config HAVE_AT91_DBGU0
 config HAVE_AT91_DBGU1
 	bool
 
+config AT91_USE_OLD_CLK
+	bool
+
 config AT91_PMC_UNIT
 	bool
 	default !ARCH_AT91X40
 
+config COMMON_CLK_AT91
+	bool
+	default AT91_PMC_UNIT && USE_OF && !AT91_USE_OLD_CLK
+	select COMMON_CLK
+
+config OLD_CLK_AT91
+	bool
+	default AT91_PMC_UNIT && AT91_USE_OLD_CLK
+
 config AT91_SAM9_ALT_RESET
 	bool
 	default !ARCH_AT91X40
@@ -65,6 +77,7 @@ config SOC_SAMA5D3
 	select SOC_SAMA5
 	select HAVE_FB_ATMEL
 	select HAVE_AT91_DBGU1
+	select AT91_USE_OLD_CLK
 	help
 	  Select this if you are using one of Atmel's SAMA5D3 family SoC.
 	  This support covers SAMA5D31, SAMA5D33, SAMA5D34, SAMA5D35.
@@ -78,11 +91,13 @@ config SOC_AT91RM9200
 	select HAVE_AT91_DBGU0
 	select MULTI_IRQ_HANDLER
 	select SPARSE_IRQ
+	select AT91_USE_OLD_CLK
 
 config SOC_AT91SAM9260
 	bool "AT91SAM9260, AT91SAM9XE or AT91SAM9G20"
 	select HAVE_AT91_DBGU0
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
 	help
 	  Select this if you are using one of Atmel's AT91SAM9260, AT91SAM9XE
 	  or AT91SAM9G20 SoC.
@@ -92,6 +107,7 @@ config SOC_AT91SAM9261
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
 	help
 	  Select this if you are using one of Atmel's AT91SAM9261 or AT91SAM9G10 SoC.
 
@@ -100,18 +116,21 @@ config SOC_AT91SAM9263
 	select HAVE_AT91_DBGU1
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
 
 config SOC_AT91SAM9RL
 	bool "AT91SAM9RL"
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
 
 config SOC_AT91SAM9G45
 	bool "AT91SAM9G45 or AT91SAM9M10 families"
 	select HAVE_AT91_DBGU1
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
 	help
 	  Select this if you are using one of Atmel's AT91SAM9G45 family SoC.
 	  This support covers AT91SAM9G45, AT91SAM9G46, AT91SAM9M10 and AT91SAM9M11.
@@ -121,6 +140,7 @@ config SOC_AT91SAM9X5
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
 	help
 	  Select this if you are using one of Atmel's AT91SAM9x5 family SoC.
 	  This means that your SAM9 name finishes with a '5' (except if it is
@@ -133,6 +153,7 @@ config SOC_AT91SAM9N12
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
 	help
 	  Select this if you are using Atmel's AT91SAM9N12 SoC.
 
diff --git a/arch/arm/mach-at91/Kconfig.non_dt b/arch/arm/mach-at91/Kconfig.non_dt
index ca900be..b736b57 100644
--- a/arch/arm/mach-at91/Kconfig.non_dt
+++ b/arch/arm/mach-at91/Kconfig.non_dt
@@ -12,26 +12,32 @@ config ARCH_AT91_NONE
 config ARCH_AT91RM9200
 	bool "AT91RM9200"
 	select SOC_AT91RM9200
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9260
 	bool "AT91SAM9260 or AT91SAM9XE or AT91SAM9G20"
 	select SOC_AT91SAM9260
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9261
 	bool "AT91SAM9261 or AT91SAM9G10"
 	select SOC_AT91SAM9261
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9263
 	bool "AT91SAM9263"
 	select SOC_AT91SAM9263
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9RL
 	bool "AT91SAM9RL"
 	select SOC_AT91SAM9RL
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9G45
 	bool "AT91SAM9G45"
 	select SOC_AT91SAM9G45
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91X40
 	bool "AT91x40"
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 3b0a953..8539411 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -7,7 +7,7 @@ obj-m		:=
 obj-n		:=
 obj-		:=
 
-obj-$(CONFIG_AT91_PMC_UNIT)	+= clock.o
+obj-$(CONFIG_OLD_CLK_AT91)	+= clock.o
 obj-$(CONFIG_AT91_SAM9_ALT_RESET) += at91sam9_alt_reset.o
 obj-$(CONFIG_AT91_SAM9G45_RESET) += at91sam9g45_reset.o
 obj-$(CONFIG_AT91_SAM9_TIME)	+= at91sam926x_time.o
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index dc6e2f5..375c42e 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -44,11 +44,12 @@ extern void at91sam926x_pit_init(void);
 extern void at91x40_timer_init(void);
 
  /* Clocks */
-#ifdef CONFIG_AT91_PMC_UNIT
+#ifdef CONFIG_OLD_CLK_AT91
 extern int __init at91_clock_init(unsigned long main_clock);
 extern int __init at91_dt_clock_init(void);
 #else
 static int inline at91_clock_init(unsigned long main_clock) { return 0; }
+static int inline at91_dt_clock_init(void) { return 0; }
 #endif
 struct device;
 
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 41aa68b..06052fc 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -483,7 +483,8 @@ void __init at91rm9200_dt_initialize(void)
 	at91_dt_clock_init();
 
 	/* Register the processor-specific clocks */
-	at91_boot_soc.register_clocks();
+	if (at91_boot_soc.register_clocks)
+		at91_boot_soc.register_clocks();
 
 	at91_boot_soc.init();
 }
@@ -498,7 +499,8 @@ void __init at91_dt_initialize(void)
 	at91_dt_clock_init();
 
 	/* Register the processor-specific clocks */
-	at91_boot_soc.register_clocks();
+	if (at91_boot_soc.register_clocks)
+		at91_boot_soc.register_clocks();
 
 	if (at91_boot_soc.init)
 		at91_boot_soc.init();
