diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 46e2b5228606..d423d58f938d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -897,7 +897,6 @@ config ARCH_MULTI_V7
 	bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
 	default y
 	select ARCH_MULTI_V6_V7
-	select ARCH_VEXPRESS
 	select CPU_V7
 
 config ARCH_MULTI_V6_V7
diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
index 33903ca0d879..51a20a441773 100644
--- a/arch/arm/configs/omap2plus_defconfig
+++ b/arch/arm/configs/omap2plus_defconfig
@@ -137,6 +137,8 @@ CONFIG_SERIAL_8250_DETECT_IRQ=y
 CONFIG_SERIAL_8250_RSA=y
 CONFIG_SERIAL_AMBA_PL011=y
 CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_OMAP=y
+CONFIG_SERIAL_OMAP_CONSOLE=y
 CONFIG_HW_RANDOM=y
 CONFIG_I2C_CHARDEV=y
 CONFIG_SPI=y
diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
index 70f1bdeb241b..5af04f6daa33 100644
--- a/arch/arm/kernel/devtree.c
+++ b/arch/arm/kernel/devtree.c
@@ -180,6 +180,13 @@ struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys)
 	unsigned long dt_root;
 	const char *model;
 
+#ifdef CONFIG_ARCH_MULTIPLATFORM
+	DT_MACHINE_START(GENERIC_DT, "Generic DT based system")
+	MACHINE_END
+
+	mdesc_best = (struct machine_desc *)&__mach_desc_GENERIC_DT;
+#endif
+
 	if (!dt_phys)
 		return NULL;
 
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 728007c4a2b7..1522c7ae31b0 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -18,6 +18,7 @@
 #include <linux/bootmem.h>
 #include <linux/seq_file.h>
 #include <linux/screen_info.h>
+#include <linux/of_platform.h>
 #include <linux/init.h>
 #include <linux/kexec.h>
 #include <linux/of_fdt.h>
@@ -659,9 +660,19 @@ struct screen_info screen_info = {
 
 static int __init customize_machine(void)
 {
-	/* customizes platform devices, or adds new ones */
+	/*
+	 * customizes platform devices, or adds new ones
+	 * On DT based machines, we fall back to populating the
+	 * machine from the device tree, if no callback is provided,
+	 * otherwise we would always need an init_machine callback.
+	 */
 	if (machine_desc->init_machine)
 		machine_desc->init_machine();
+#ifdef CONFIG_OF
+	else
+		of_platform_populate(NULL, of_default_bus_match_table,
+					NULL, NULL);
+#endif
 	return 0;
 }
 arch_initcall(customize_machine);
diff --git a/arch/arm/mach-imx/headsmp.S b/arch/arm/mach-imx/headsmp.S
index a58c8b0527cc..67b9c48dcafe 100644
--- a/arch/arm/mach-imx/headsmp.S
+++ b/arch/arm/mach-imx/headsmp.S
@@ -24,7 +24,7 @@ ENTRY(v7_secondary_startup)
 ENDPROC(v7_secondary_startup)
 #endif
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_ARM_CPU_SUSPEND
 /*
  * The following code must assume it is running from physical address
  * where absolute virtual addresses to the data section have to be
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 857b1f097fd8..f49cd51e162a 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -37,8 +37,6 @@ config ARCH_OMAP2PLUS_TYPICAL
 	select NEON if ARCH_OMAP3 || ARCH_OMAP4 || SOC_OMAP5
 	select PM_RUNTIME
 	select REGULATOR
-	select SERIAL_OMAP
-	select SERIAL_OMAP_CONSOLE
 	select TWL4030_CORE if ARCH_OMAP3 || ARCH_OMAP4
 	select TWL4030_POWER if ARCH_OMAP3 || ARCH_OMAP4
 	select VFP
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 62bb352c2d37..55a9d6777683 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -32,12 +32,12 @@ obj-$(CONFIG_SOC_HAS_OMAP2_SDRC)	+= sdrc.o
 
 # SMP support ONLY available for OMAP4
 
-obj-$(CONFIG_SMP)			+= omap-smp.o omap-headsmp.o
-obj-$(CONFIG_HOTPLUG_CPU)		+= omap-hotplug.o
+smp-$(CONFIG_SMP)			+= omap-smp.o omap-headsmp.o
+smp-$(CONFIG_HOTPLUG_CPU)		+= omap-hotplug.o
 omap-4-5-common				=  omap4-common.o omap-wakeupgen.o \
 					   sleep44xx.o
-obj-$(CONFIG_ARCH_OMAP4)		+= $(omap-4-5-common)
-obj-$(CONFIG_SOC_OMAP5)			+= $(omap-4-5-common)
+obj-$(CONFIG_ARCH_OMAP4)		+= $(omap-4-5-common) $(smp-y)
+obj-$(CONFIG_SOC_OMAP5)			+= $(omap-4-5-common) $(smp-y)
 
 plus_sec := $(call as-instr,.arch_extension sec,+sec)
 AFLAGS_omap-headsmp.o			:=-Wa,-march=armv7-a$(plus_sec)
diff --git a/arch/arm/mach-prima2/Kconfig b/arch/arm/mach-prima2/Kconfig
index 80ca974b2f82..6988b117fc17 100644
--- a/arch/arm/mach-prima2/Kconfig
+++ b/arch/arm/mach-prima2/Kconfig
@@ -38,7 +38,7 @@ config ARCH_MARCO
 	select CPU_V7
 	select HAVE_ARM_SCU if SMP
 	select HAVE_SMP
-	select SMP_ON_UP
+	select SMP_ON_UP if SMP
 	help
           Support for CSR SiRFSoC ARM Cortex A9 Platform
 
diff --git a/arch/arm/mach-spear/spear13xx.c b/arch/arm/mach-spear/spear13xx.c
index 3621599c38ad..7aa6e8cf830f 100644
--- a/arch/arm/mach-spear/spear13xx.c
+++ b/arch/arm/mach-spear/spear13xx.c
@@ -35,6 +35,8 @@ void __init spear13xx_l2x0_init(void)
 	 * write alloc and 'Full line of zero' options
 	 *
 	 */
+	if (!IS_ENABLED(CONFIG_CACHE_L2X0))
+		return;
 
 	writel_relaxed(0x06, VA_L2CC_BASE + L2X0_PREFETCH_CTRL);
 
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 20c3b372cdf5..84d72fc36dfe 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -63,6 +63,7 @@ config ARCH_TEGRA_114_SOC
 	select ARM_ARCH_TIMER
 	select ARM_GIC
 	select ARM_L1_CACHE_SHIFT_6
+	select CPU_FREQ_TABLE if CPU_FREQ
 	select CPU_V7
 	select PINCTRL
 	select PINCTRL_TEGRA114
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index f66d7deae46d..6a4387e39df8 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig
@@ -19,6 +19,8 @@ if ARCH_U8500
 config UX500_SOC_COMMON
 	bool
 	default y
+	select ABX500_CORE
+	select AB8500_CORE
 	select ARM_ERRATA_754322
 	select ARM_ERRATA_764369 if SMP
 	select ARM_GIC