diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 74a873ad493f0a61de23df093e1593b0ed71e46c..453ae2feaeeec69b1dd87a9fd50def7c471c3327 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -117,17 +117,20 @@ choice
 	config AT91_DEBUG_LL_DBGU0
 		bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10, 9rl, 9x5, 9n12"
 		select DEBUG_AT91_UART
-		depends on HAVE_AT91_DBGU0
+		depends on ARCH_AT91
+		depends on SOC_AT91RM9200 || SOC_AT91SAM9
 
 	config AT91_DEBUG_LL_DBGU1
 		bool "Kernel low-level debugging on 9263, 9g45 and sama5d3"
 		select DEBUG_AT91_UART
-		depends on HAVE_AT91_DBGU1
+		depends on ARCH_AT91
+		depends on SOC_AT91SAM9 || SOC_SAMA5
 
 	config AT91_DEBUG_LL_DBGU2
 		bool "Kernel low-level debugging on sama5d4"
 		select DEBUG_AT91_UART
-		depends on HAVE_AT91_DBGU2
+		depends on ARCH_AT91
+		depends on SOC_SAMA5
 
 	config DEBUG_BCM2835
 		bool "Kernel low-level debugging on BCM2835 PL011 UART"
@@ -1148,6 +1151,10 @@ choice
 
 endchoice
 
+config DEBUG_AT91_UART
+	bool
+	depends on ARCH_AT91
+
 config DEBUG_EXYNOS_UART
 	bool
 
@@ -1208,8 +1215,7 @@ config DEBUG_LL_INCLUDE
 	string
 	default "debug/sa1100.S" if DEBUG_SA1100
 	default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
-	default "debug/at91.S" if AT91_DEBUG_LL_DBGU0 || AT91_DEBUG_LL_DBGU1 || \
-				AT91_DEBUG_LL_DBGU2
+	default "debug/at91.S" if DEBUG_AT91_UART
 	default "debug/asm9260.S" if DEBUG_ASM9260_UART
 	default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
 	default "debug/meson.S" if DEBUG_MESON_UARTAO
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index b7dcef50db23a04a0e7b7a21f34baf65b15ad1f4..c6956b863b9dfe5f1b8d9018e743a4d91559d048 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -6,15 +6,6 @@ config HAVE_AT91_UTMI
 config HAVE_AT91_USB_CLK
 	bool
 
-config HAVE_AT91_DBGU0
-	bool
-
-config HAVE_AT91_DBGU1
-	bool
-
-config HAVE_AT91_DBGU2
-	bool
-
 config COMMON_CLK_AT91
 	bool
 	select COMMON_CLK
@@ -70,7 +61,6 @@ config SOC_SAMA5D3
 	bool "SAMA5D3 family"
 	select SOC_SAMA5
 	select HAVE_FB_ATMEL
-	select HAVE_AT91_DBGU1
 	select HAVE_AT91_UTMI
 	select HAVE_AT91_SMD
 	select HAVE_AT91_USB_CLK
@@ -81,7 +71,6 @@ config SOC_SAMA5D3
 config SOC_SAMA5D4
 	bool "SAMA5D4 family"
 	select SOC_SAMA5
-	select HAVE_AT91_DBGU2
 	select CLKSRC_MMIO
 	select CACHE_L2X0
 	select CACHE_PL310
@@ -101,12 +90,10 @@ config SOC_AT91RM9200
 	select COMMON_CLK_AT91
 	select CPU_ARM920T
 	select GENERIC_CLOCKEVENTS
-	select HAVE_AT91_DBGU0
 	select HAVE_AT91_USB_CLK
 
 config SOC_AT91SAM9260
 	bool "AT91SAM9260, AT91SAM9XE or AT91SAM9G20"
-	select HAVE_AT91_DBGU0
 	select SOC_AT91SAM9
 	select HAVE_AT91_USB_CLK
 	help
@@ -115,7 +102,6 @@ config SOC_AT91SAM9260
 
 config SOC_AT91SAM9261
 	bool "AT91SAM9261 or AT91SAM9G10"
-	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
 	select HAVE_AT91_USB_CLK
@@ -124,21 +110,18 @@ config SOC_AT91SAM9261
 
 config SOC_AT91SAM9263
 	bool "AT91SAM9263"
-	select HAVE_AT91_DBGU1
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
 	select HAVE_AT91_USB_CLK
 
 config SOC_AT91SAM9RL
 	bool "AT91SAM9RL"
-	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
 	select HAVE_AT91_UTMI
 
 config SOC_AT91SAM9G45
 	bool "AT91SAM9G45 or AT91SAM9M10 families"
-	select HAVE_AT91_DBGU1
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
 	select HAVE_AT91_UTMI
@@ -149,7 +132,6 @@ config SOC_AT91SAM9G45
 
 config SOC_AT91SAM9X5
 	bool "AT91SAM9x5 family"
-	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
 	select HAVE_AT91_UTMI
@@ -164,7 +146,6 @@ config SOC_AT91SAM9X5
 
 config SOC_AT91SAM9N12
 	bool "AT91SAM9N12 family"
-	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
 	select HAVE_AT91_USB_CLK
diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index ab9841c8b0d5d544b9caae7009edd6cc4fb25d56..37b7ce4c6a3b182ea3c8f5d673cb320983edbd1b 100644
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -22,11 +22,5 @@
  *  AT91SAM9260 processor initialization
  * -------------------------------------------------------------------- */
 
-static void __init at91sam9260_initialize(void)
-{
-	arm_pm_idle = at91sam9_idle;
-}
-
 AT91_SOC_START(at91sam9260)
-	.init = at91sam9260_initialize,
 AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c
index 2029096b93fa925b1c8508e3c44eb5762a88c82d..aebbf76b6038110b5c93fa1cd1b1761abe293c24 100644
--- a/arch/arm/mach-at91/at91sam9261.c
+++ b/arch/arm/mach-at91/at91sam9261.c
@@ -21,11 +21,5 @@
  *  AT91SAM9261 processor initialization
  * -------------------------------------------------------------------- */
 
-static void __init at91sam9261_initialize(void)
-{
-	arm_pm_idle = at91sam9_idle;
-}
-
 AT91_SOC_START(at91sam9261)
-	.init = at91sam9261_initialize,
 AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
index 1fe672a055139ac757d605177178cd4551a52145..dca29457d9cc9f61533f79f76817735804b447c6 100644
--- a/arch/arm/mach-at91/at91sam9263.c
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -20,11 +20,5 @@
  *  AT91SAM9263 processor initialization
  * -------------------------------------------------------------------- */
 
-static void __init at91sam9263_initialize(void)
-{
-	arm_pm_idle = at91sam9_idle;
-}
-
 AT91_SOC_START(at91sam9263)
-	.init = at91sam9263_initialize,
 AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c
index d0493df40a13b64654410a03587ef32d1215e85a..4957a9ef748a11bf956ece36347d6d3426d72547 100644
--- a/arch/arm/mach-at91/at91sam9g45.c
+++ b/arch/arm/mach-at91/at91sam9g45.c
@@ -19,11 +19,6 @@
 /* --------------------------------------------------------------------
  *  AT91SAM9G45 processor initialization
  * -------------------------------------------------------------------- */
-static void __init at91sam9g45_initialize(void)
-{
-	arm_pm_idle = at91sam9_idle;
-}
 
 AT91_SOC_START(at91sam9g45)
-	.init = at91sam9g45_initialize,
 AT91_SOC_END
diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
index 33acae30bb0bdbafeba960299c31769cbdf55737..6cb40e4ec20f3565295d0652870ca188fe8fb0e4 100644
--- a/arch/arm/mach-at91/at91sam9rl.c
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -21,11 +21,5 @@
  *  AT91SAM9RL processor initialization
  * -------------------------------------------------------------------- */
 
-static void __init at91sam9rl_initialize(void)
-{
-	arm_pm_idle = at91sam9_idle;
-}
-
 AT91_SOC_START(at91sam9rl)
-	.init = at91sam9rl_initialize,
 AT91_SOC_END
diff --git a/arch/arm/mach-at91/board-dt-rm9200.c b/arch/arm/mach-at91/board-dt-rm9200.c
index 5f82a65153e197c80a1072da2dc92b6d8de9ae47..d47c4433444dc428dfb899c21d9b1ffe45c992af 100644
--- a/arch/arm/mach-at91/board-dt-rm9200.c
+++ b/arch/arm/mach-at91/board-dt-rm9200.c
@@ -33,14 +33,14 @@ static void __init at91rm9200_dt_timer_init(void)
 
 static void __init rm9200_dt_device_init(void)
 {
-	at91_rm9200_pm_init();
-
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+
+	at91_rm9200_pm_init();
 }
 
 
 
-static const char *at91rm9200_dt_board_compat[] __initdata = {
+static const char *at91rm9200_dt_board_compat[] __initconst = {
 	"atmel,at91rm9200",
 	NULL
 };
diff --git a/arch/arm/mach-at91/board-dt-sam9.c b/arch/arm/mach-at91/board-dt-sam9.c
index 0fe1ced608c58257a29301dac9152cca88c83c3a..f5d922e57655dd542ab215be3b2c179e09f4da7c 100644
--- a/arch/arm/mach-at91/board-dt-sam9.c
+++ b/arch/arm/mach-at91/board-dt-sam9.c
@@ -16,6 +16,7 @@
 #include <linux/of_platform.h>
 #include <linux/clk-provider.h>
 
+#include <asm/system_misc.h>
 #include <asm/setup.h>
 #include <asm/irq.h>
 #include <asm/mach/arch.h>
@@ -26,11 +27,13 @@
 
 static void __init sam9_dt_device_init(void)
 {
-	at91_sam9260_pm_init();
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+
+	arm_pm_idle = at91sam9_idle;
+	at91_sam9260_pm_init();
 }
 
-static const char *at91_dt_board_compat[] __initdata = {
+static const char *at91_dt_board_compat[] __initconst = {
 	"atmel,at91sam9",
 	NULL
 };
@@ -45,8 +48,10 @@ MACHINE_END
 
 static void __init sam9g45_dt_device_init(void)
 {
-	at91_sam9g45_pm_init();
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+
+	arm_pm_idle = at91sam9_idle;
+	at91_sam9g45_pm_init();
 }
 
 static const char *at91_9g45_board_compat[] __initconst = {
@@ -61,3 +66,25 @@ DT_MACHINE_START(at91sam9g45_dt, "Atmel AT91SAM9G45")
 	.init_machine	= sam9g45_dt_device_init,
 	.dt_compat	= at91_9g45_board_compat,
 MACHINE_END
+
+static void __init sam9x5_dt_device_init(void)
+{
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+
+	arm_pm_idle = at91sam9_idle;
+	at91_sam9x5_pm_init();
+}
+
+static const char *at91_9x5_board_compat[] __initconst = {
+	"atmel,at91sam9x5",
+	"atmel,at91sam9n12",
+	NULL
+};
+
+DT_MACHINE_START(at91sam9x5_dt, "Atmel AT91SAM9")
+	/* Maintainer: Atmel */
+	.map_io		= at91_map_io,
+	.init_early	= at91_dt_initialize,
+	.init_machine	= sam9x5_dt_device_init,
+	.dt_compat	= at91_9x5_board_compat,
+MACHINE_END
diff --git a/arch/arm/mach-at91/board-dt-sama5.c b/arch/arm/mach-at91/board-dt-sama5.c
index 44d372a22a29d29ba0dbb0cafda7270545c4feca..86cffcdef14502d312fc3cd43beea9947a50ba0a 100644
--- a/arch/arm/mach-at91/board-dt-sama5.c
+++ b/arch/arm/mach-at91/board-dt-sama5.c
@@ -28,8 +28,8 @@
 
 static void __init sama5_dt_device_init(void)
 {
-	at91_sam9260_pm_init();
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+	at91_sam9x5_pm_init();
 }
 
 static const char *sama5_dt_board_compat[] __initconst = {
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index 44fc725edcf1668e3c5a03cade7507363da3212a..a8ee83ef6cd416ddd068ee3bd19630f55395a517 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -36,10 +36,12 @@ extern void at91_ioremap_matrix(u32 base_addr);
 extern void __init at91_rm9200_pm_init(void);
 extern void __init at91_sam9260_pm_init(void);
 extern void __init at91_sam9g45_pm_init(void);
+extern void __init at91_sam9x5_pm_init(void);
 #else
 void __init at91_rm9200_pm_init(void) { }
 void __init at91_sam9260_pm_init(void) { }
 void __init at91_sam9g45_pm_init(void) { }
+void __init at91_sam9x5_pm_init(void) { }
 #endif
 
 #endif /* _AT91_GENERIC_H */
diff --git a/arch/arm/mach-at91/include/mach/system_rev.h b/arch/arm/mach-at91/include/mach/system_rev.h
deleted file mode 100644
index ef79a9aafc08495c11cab9a5bd31c67ec8de24a2..0000000000000000000000000000000000000000
--- a/arch/arm/mach-at91/include/mach/system_rev.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
- *
- * Under GPLv2 only
- */
-
-#ifndef __ARCH_SYSTEM_REV_H__
-#define __ARCH_SYSTEM_REV_H__
-
-#include <asm/system_info.h>
-
-/*
- * board revision encoding
- * mach specific
- * the 16-31 bit are reserved for at91 generic information
- *
- * bit 31:
- *	0 => nand 8 bit
- *	1 => nand 16 bit
- */
-#define BOARD_HAVE_NAND_16BIT	(1 << 31)
-static inline int board_have_nand_16bit(void)
-{
-	return (system_rev & BOARD_HAVE_NAND_16BIT) ? 1 : 0;
-}
-
-#endif /* __ARCH_SYSTEM_REV_H__ */
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 81f2f12d3cc1546d669d66c2451fca01ae4123b2..87c1fd8aa1b6e13a7102a19f9f07cf4b48a10410 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -306,3 +306,10 @@ void __init at91_sam9g45_pm_init(void)
 	at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
 	return at91_pm_init();
 }
+
+void __init at91_sam9x5_pm_init(void)
+{
+	at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
+	at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
+	return at91_pm_init();
+}
diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S
index 20018779bae7a50db61b75ca8a1e9ebf1858d02d..556151e85ec4c71712373098ce731c68674a757b 100644
--- a/arch/arm/mach-at91/pm_slowclock.S
+++ b/arch/arm/mach-at91/pm_slowclock.S
@@ -17,15 +17,6 @@
 #include <mach/hardware.h>
 #include <mach/at91_ramc.h>
 
-
-#ifdef CONFIG_SOC_AT91SAM9263
-/*
- * FIXME either or both the SDRAM controllers (EB0, EB1) might be in use;
- * handle those cases both here and in the Suspend-To-RAM support.
- */
-#warning Assuming EB1 SDRAM controller is *NOT* used
-#endif
-
 /*
  * When SLOWDOWN_MASTER_CLOCK is defined we will also slow down the Master
  * clock during suspend by adjusting its prescalar and divisor.