Merge tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform changes from Olof Johansson:
 "This is the bulk of new SoC enablement and other platform changes for
  3.17:

   - Samsung S5PV210 has been converted to DT and multiplatform
   - Clock drivers and bindings for some of the lower-end i.MX 1/2
     platforms
   - Kirkwood, one of the popular Marvell platforms, is folded into the
     mvebu platform code, removing mach-kirkwood
   - Hwmod data for TI AM43xx and DRA7 platforms
   - More additions of Renesas shmobile platform support
   - Removal of plat-samsung contents that can be removed with S5PV210
     being multiplatform/DT-enabled and the other two old platforms
     being removed

  New platforms (most with only basic support right now):

   - Hisilicon X5HD2 settop box chipset is introduced
   - Mediatek MT6589 (mobile chipset) is introduced
   - Broadcom BCM7xxx settop box chipset is introduced

  + as usual a lot other pieces all over the platform code"

* tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (240 commits)
  ARM: hisi: remove smp from machine descriptor
  power: reset: move hisilicon reboot code
  ARM: dts: Add hix5hd2-dkb dts file.
  ARM: debug: Rename Hi3716 to HIX5HD2
  ARM: hisi: enable hix5hd2 SoC
  ARM: hisi: add ARCH_HISI
  MAINTAINERS: add entry for Broadcom ARM STB architecture
  ARM: brcmstb: select GISB arbiter and interrupt drivers
  ARM: brcmstb: add infrastructure for ARM-based Broadcom STB SoCs
  ARM: configs: enable SMP in bcm_defconfig
  ARM: add SMP support for Broadcom mobile SoCs
  Documentation: arm: misc updates to Marvell EBU SoC status
  Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC
  ARM: mvebu: fix build without platforms selected
  ARM: mvebu: add cpuidle support for Armada 38x
  ARM: mvebu: add cpuidle support for Armada 370
  cpuidle: mvebu: add Armada 38x support
  cpuidle: mvebu: add Armada 370 support
  cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7
  ARM: mvebu: export the SCU address
  ...

18 files changed, 797 insertions, 138 deletions

diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index b9bc599a5fd..c1e4567a5ab 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -14,11 +14,15 @@ menuconfig ARCH_MVEBU
 
 if ARCH_MVEBU
 
+config MACH_MVEBU_ANY
+	bool
+
 config MACH_MVEBU_V7
 	bool
 	select ARMADA_370_XP_TIMER
 	select CACHE_L2X0
 	select ARM_CPU_SUSPEND
+	select MACH_MVEBU_ANY
 
 config MACH_ARMADA_370
 	bool "Marvell Armada 370 boards" if ARCH_MULTI_V7
@@ -75,6 +79,7 @@ config MACH_DOVE
 	select CACHE_L2X0
 	select CPU_PJ4
 	select DOVE_CLK
+	select MACH_MVEBU_ANY
 	select ORION_IRQCHIP
 	select ORION_TIMER
 	select PINCTRL_DOVE
@@ -87,6 +92,7 @@ config MACH_KIRKWOOD
 	select ARCH_REQUIRE_GPIOLIB
 	select CPU_FEROCEON
 	select KIRKWOOD_CLK
+	select MACH_MVEBU_ANY
 	select ORION_IRQCHIP
 	select ORION_TIMER
 	select PCI
@@ -96,4 +102,11 @@ config MACH_KIRKWOOD
 	  Say 'Y' here if you want your kernel to support boards based
 	  on the Marvell Kirkwood device tree.
 
+config MACH_NETXBIG
+	bool "LaCie 2Big and 5Big Network v2"
+	depends on MACH_KIRKWOOD
+	help
+	  Say 'Y' here if you want your kernel to support the
+	  LaCie 2Big and 5Big Network v2
+
 endif
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 1636cdbef01..e24136b4276 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -4,13 +4,13 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
 AFLAGS_coherency_ll.o		:= -Wa,-march=armv7-a
 CFLAGS_pmsu.o			:= -march=armv7-a
 
-obj-y				 += system-controller.o mvebu-soc-id.o
+obj-$(CONFIG_MACH_MVEBU_ANY)	 += system-controller.o mvebu-soc-id.o
 
 ifeq ($(CONFIG_MACH_MVEBU_V7),y)
 obj-y				 += cpu-reset.o board-v7.o coherency.o coherency_ll.o pmsu.o pmsu_ll.o
 obj-$(CONFIG_SMP)		 += platsmp.o headsmp.o platsmp-a9.o headsmp-a9.o
-obj-$(CONFIG_HOTPLUG_CPU)	 += hotplug.o
 endif
 
 obj-$(CONFIG_MACH_DOVE)		 += dove.o
 obj-$(CONFIG_MACH_KIRKWOOD)	 += kirkwood.o kirkwood-pm.o
+obj-$(CONFIG_MACH_NETXBIG)	 += netxbig.o
diff --git a/arch/arm/mach-mvebu/armada-370-xp.h b/arch/arm/mach-mvebu/armada-370-xp.h
index c3465f5b125..84cd90d9b86 100644
--- a/arch/arm/mach-mvebu/armada-370-xp.h
+++ b/arch/arm/mach-mvebu/armada-370-xp.h
@@ -24,4 +24,6 @@ void armada_xp_secondary_startup(void);
 extern struct smp_operations armada_xp_smp_ops;
 #endif
 
+int armada_370_xp_pmsu_idle_enter(unsigned long deepidle);
+
 #endif /* __MACH_ARMADA_370_XP_H */
diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c
index b2524d689f2..6478626e3ff 100644
--- a/arch/arm/mach-mvebu/board-v7.c
+++ b/arch/arm/mach-mvebu/board-v7.c
@@ -34,14 +34,14 @@
 #include "coherency.h"
 #include "mvebu-soc-id.h"
 
+static void __iomem *scu_base;
+
 /*
  * Enables the SCU when available. Obviously, this is only useful on
  * Cortex-A based SOCs, not on PJ4B based ones.
  */
 static void __init mvebu_scu_enable(void)
 {
-	void __iomem *scu_base;
-
 	struct device_node *np =
 		of_find_compatible_node(NULL, NULL, "arm,cortex-a9-scu");
 	if (np) {
@@ -51,6 +51,11 @@ static void __init mvebu_scu_enable(void)
 	}
 }
 
+void __iomem *mvebu_get_scu_base(void)
+{
+	return scu_base;
+}
+
 /*
  * Early versions of Armada 375 SoC have a bug where the BootROM
  * leaves an external data abort pending. The kernel is hit by this
@@ -125,8 +130,16 @@ static void __init thermal_quirk(void)
 {
 	struct device_node *np;
 	u32 dev, rev;
+	int res;
 
-	if (mvebu_get_soc_id(&dev, &rev) == 0 && rev > ARMADA_375_Z1_REV)
+	/*
+	 * The early SoC Z1 revision needs a quirk to be applied in order
+	 * for the thermal controller to work properly. This quirk breaks
+	 * the thermal support if applied on a SoC that doesn't need it,
+	 * so we enforce the SoC revision to be known.
+	 */
+	res = mvebu_get_soc_id(&dev, &rev);
+	if (res < 0 || (res == 0 && rev > ARMADA_375_Z1_REV))
 		return;
 
 	for_each_compatible_node(np, NULL, "marvell,armada375-thermal") {
@@ -160,7 +173,8 @@ static void __init thermal_quirk(void)
 
 		/*
 		 * The thermal controller needs some quirk too, so let's change
-		 * the compatible string to reflect this.
+		 * the compatible string to reflect this and allow the driver
+		 * the take the necessary action.
 		 */
 		prop = kzalloc(sizeof(*prop), GFP_KERNEL);
 		prop->name = kstrdup("compatible", GFP_KERNEL);
diff --git a/arch/arm/mach-mvebu/board.h b/arch/arm/mach-mvebu/board.h
index 9c7bb4386f8..98e32cc2ef3 100644
--- a/arch/arm/mach-mvebu/board.h
+++ b/arch/arm/mach-mvebu/board.h
@@ -13,4 +13,9 @@
 #ifndef __ARCH_MVEBU_BOARD_H
 #define __ARCH_MVEBU_BOARD_H
 
+#ifdef CONFIG_MACH_NETXBIG
+void netxbig_init(void);
+#else
+static inline void netxbig_init(void) {};
+#endif
 #endif
diff --git a/arch/arm/mach-mvebu/common.h b/arch/arm/mach-mvebu/common.h
index b67fb7a10d8..3ccb40c3bf9 100644
--- a/arch/arm/mach-mvebu/common.h
+++ b/arch/arm/mach-mvebu/common.h
@@ -21,7 +21,8 @@ void mvebu_restart(enum reboot_mode mode, const char *cmd);
 int mvebu_cpu_reset_deassert(int cpu);
 void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr);
 void mvebu_system_controller_set_cpu_boot_addr(void *boot_addr);
+int mvebu_system_controller_get_soc_id(u32 *dev, u32 *rev);
 
-void armada_xp_cpu_die(unsigned int cpu);
+void __iomem *mvebu_get_scu_base(void);
 
 #endif
diff --git a/arch/arm/mach-mvebu/cpu-reset.c b/arch/arm/mach-mvebu/cpu-reset.c
index 4a8f9eebebe..60fb5378700 100644
--- a/arch/arm/mach-mvebu/cpu-reset.c
+++ b/arch/arm/mach-mvebu/cpu-reset.c
@@ -67,7 +67,7 @@ static int mvebu_cpu_reset_map(struct device_node *np, int res_idx)
 	return 0;
 }
 
-int __init mvebu_cpu_reset_init(void)
+static int __init mvebu_cpu_reset_init(void)
 {
 	struct device_node *np;
 	int res_idx;
diff --git a/arch/arm/mach-mvebu/headsmp-a9.S b/arch/arm/mach-mvebu/headsmp-a9.S
index 2c3c7fc65e2..be51c998c0c 100644
--- a/arch/arm/mach-mvebu/headsmp-a9.S
+++ b/arch/arm/mach-mvebu/headsmp-a9.S
@@ -18,21 +18,6 @@
 #include <asm/assembler.h>
 
 	__CPUINIT
-#define CPU_RESUME_ADDR_REG 0xf10182d4
-
-.global armada_375_smp_cpu1_enable_code_start
-.global armada_375_smp_cpu1_enable_code_end
-
-armada_375_smp_cpu1_enable_code_start:
-ARM_BE8(setend	be)
-	adr     r0, 1f
-	ldr	r0, [r0]
-	ldr     r1, [r0]
-ARM_BE8(rev	r1, r1)
-	ret     r1
-1:
-	.word   CPU_RESUME_ADDR_REG
-armada_375_smp_cpu1_enable_code_end:
 
 ENTRY(mvebu_cortex_a9_secondary_startup)
 ARM_BE8(setend	be)
diff --git a/arch/arm/mach-mvebu/hotplug.c b/arch/arm/mach-mvebu/hotplug.c
deleted file mode 100644
index d95e9104716..00000000000
--- a/arch/arm/mach-mvebu/hotplug.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Symmetric Multi Processing (SMP) support for Armada XP
- *
- * Copyright (C) 2012 Marvell
- *
- * Lior Amsalem <alior@marvell.com>
- * Gregory CLEMENT <gregory.clement@free-electrons.com>
- * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-#include <asm/proc-fns.h>
-#include "common.h"
-
-/*
- * platform-specific code to shutdown a CPU
- *
- * Called with IRQs disabled
- */
-void __ref armada_xp_cpu_die(unsigned int cpu)
-{
-	cpu_do_idle();
-
-	/* We should never return from idle */
-	panic("mvebu: cpu %d unexpectedly exit from shutdown\n", cpu);
-}
diff --git a/arch/arm/mach-mvebu/kirkwood.c b/arch/arm/mach-mvebu/kirkwood.c
index 46f105913c8..6b5310828eb 100644
--- a/arch/arm/mach-mvebu/kirkwood.c
+++ b/arch/arm/mach-mvebu/kirkwood.c
@@ -180,6 +180,9 @@ static void __init kirkwood_dt_init(void)
 	kirkwood_pm_init();
 	kirkwood_dt_eth_fixup();
 
+	if (of_machine_is_compatible("lacie,netxbig"))
+		netxbig_init();
+
 	of_platform_populate(NULL, of_default_bus_match_table, auxdata, NULL);
 }
 
diff --git a/arch/arm/mach-mvebu/mvebu-soc-id.c b/arch/arm/mach-mvebu/mvebu-soc-id.c
index d0f35b4d4a2..a99434bcee8 100644
--- a/arch/arm/mach-mvebu/mvebu-soc-id.c
+++ b/arch/arm/mach-mvebu/mvebu-soc-id.c
@@ -25,6 +25,7 @@
 #include <linux/of_address.h>
 #include <linux/slab.h>
 #include <linux/sys_soc.h>
+#include "common.h"
 #include "mvebu-soc-id.h"
 
 #define PCIE_DEV_ID_OFF		0x0
@@ -51,10 +52,10 @@ int mvebu_get_soc_id(u32 *dev, u32 *rev)
 		*rev = soc_rev;
 		return 0;
 	} else
-		return -1;
+		return -ENODEV;
 }
 
-static int __init mvebu_soc_id_init(void)
+static int __init get_soc_id_by_pci(void)
 {
 	struct device_node *np;
 	int ret = 0;
@@ -129,6 +130,22 @@ clk_err:
 
 	return ret;
 }
+
+static int __init mvebu_soc_id_init(void)
+{
+
+	/*
+	 * First try to get the ID and the revision by the system
+	 * register and use PCI registers only if it is not possible
+	 */
+	if (!mvebu_system_controller_get_soc_id(&soc_dev_id, &soc_rev)) {
+		is_id_valid = true;
+		pr_info("MVEBU SoC ID=0x%X, Rev=0x%X\n", soc_dev_id, soc_rev);
+		return 0;
+	}
+
+	return get_soc_id_by_pci();
+}
 early_initcall(mvebu_soc_id_init);
 
 static int __init mvebu_soc_device(void)
diff --git a/arch/arm/mach-mvebu/netxbig.c b/arch/arm/mach-mvebu/netxbig.c
new file mode 100644
index 00000000000..94b11b6585a
--- /dev/null
+++ b/arch/arm/mach-mvebu/netxbig.c
@@ -0,0 +1,191 @@
+/*
+ * arch/arm/mach-mvbu/board-netxbig.c
+ *
+ * LaCie 2Big and 5Big Network v2 board setup
+ *
+ * Copyright (C) 2010 Simon Guinot <sguinot@lacie.com>
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/leds-kirkwood-netxbig.h>
+#include "common.h"
+
+/*****************************************************************************
+ * GPIO extension LEDs
+ ****************************************************************************/
+
+/*
+ * The LEDs are controlled by a CPLD and can be configured through a GPIO
+ * extension bus:
+ *
+ * - address register : bit [0-2] -> GPIO [47-49]
+ * - data register    : bit [0-2] -> GPIO [44-46]
+ * - enable register  : GPIO 29
+ */
+
+static int netxbig_v2_gpio_ext_addr[] = { 47, 48, 49 };
+static int netxbig_v2_gpio_ext_data[] = { 44, 45, 46 };
+
+static struct netxbig_gpio_ext netxbig_v2_gpio_ext = {
+	.addr		= netxbig_v2_gpio_ext_addr,
+	.num_addr	= ARRAY_SIZE(netxbig_v2_gpio_ext_addr),
+	.data		= netxbig_v2_gpio_ext_data,
+	.num_data	= ARRAY_SIZE(netxbig_v2_gpio_ext_data),
+	.enable		= 29,
+};
+
+/*
+ * Address register selection:
+ *
+ * addr | register
+ * ----------------------------
+ *   0  | front LED
+ *   1  | front LED brightness
+ *   2  | SATA LED brightness
+ *   3  | SATA0 LED
+ *   4  | SATA1 LED
+ *   5  | SATA2 LED
+ *   6  | SATA3 LED
+ *   7  | SATA4 LED
+ *
+ * Data register configuration:
+ *
+ * data | LED brightness
+ * -------------------------------------------------
+ *   0  | min (off)
+ *   -  | -
+ *   7  | max
+ *
+ * data | front LED mode
+ * -------------------------------------------------
+ *   0  | fix off
+ *   1  | fix blue on
+ *   2  | fix red on
+ *   3  | blink blue on=1 sec and blue off=1 sec
+ *   4  | blink red on=1 sec and red off=1 sec
+ *   5  | blink blue on=2.5 sec and red on=0.5 sec
+ *   6  | blink blue on=1 sec and red on=1 sec
+ *   7  | blink blue on=0.5 sec and blue off=2.5 sec
+ *
+ * data | SATA LED mode
+ * -------------------------------------------------
+ *   0  | fix off
+ *   1  | SATA activity blink
+ *   2  | fix red on
+ *   3  | blink blue on=1 sec and blue off=1 sec
+ *   4  | blink red on=1 sec and red off=1 sec
+ *   5  | blink blue on=2.5 sec and red on=0.5 sec
+ *   6  | blink blue on=1 sec and red on=1 sec
+ *   7  | fix blue on
+ */
+
+static int netxbig_v2_red_mled[NETXBIG_LED_MODE_NUM] = {
+	[NETXBIG_LED_OFF]	= 0,
+	[NETXBIG_LED_ON]	= 2,
+	[NETXBIG_LED_SATA]	= NETXBIG_LED_INVALID_MODE,
+	[NETXBIG_LED_TIMER1]	= 4,
+	[NETXBIG_LED_TIMER2]	= NETXBIG_LED_INVALID_MODE,
+};
+
+static int netxbig_v2_blue_pwr_mled[NETXBIG_LED_MODE_NUM] = {
+	[NETXBIG_LED_OFF]	= 0,
+	[NETXBIG_LED_ON]	= 1,
+	[NETXBIG_LED_SATA]	= NETXBIG_LED_INVALID_MODE,
+	[NETXBIG_LED_TIMER1]	= 3,
+	[NETXBIG_LED_TIMER2]	= 7,
+};
+
+static int netxbig_v2_blue_sata_mled[NETXBIG_LED_MODE_NUM] = {
+	[NETXBIG_LED_OFF]	= 0,
+	[NETXBIG_LED_ON]	= 7,
+	[NETXBIG_LED_SATA]	= 1,
+	[NETXBIG_LED_TIMER1]	= 3,
+	[NETXBIG_LED_TIMER2]	= NETXBIG_LED_INVALID_MODE,
+};
+
+static struct netxbig_led_timer netxbig_v2_led_timer[] = {
+	[0] = {
+		.delay_on	= 500,
+		.delay_off	= 500,
+		.mode		= NETXBIG_LED_TIMER1,
+	},
+	[1] = {
+		.delay_on	= 500,
+		.delay_off	= 1000,
+		.mode		= NETXBIG_LED_TIMER2,
+	},
+};
+
+#define NETXBIG_LED(_name, maddr, mval, baddr)			\
+	{ .name		= _name,				\
+	  .mode_addr	= maddr,				\
+	  .mode_val	= mval,					\
+	  .bright_addr	= baddr }
+
+static struct netxbig_led net2big_v2_leds_ctrl[] = {
+	NETXBIG_LED("net2big-v2:blue:power", 0, netxbig_v2_blue_pwr_mled,  1),
+	NETXBIG_LED("net2big-v2:red:power",  0, netxbig_v2_red_mled,       1),
+	NETXBIG_LED("net2big-v2:blue:sata0", 3, netxbig_v2_blue_sata_mled, 2),
+	NETXBIG_LED("net2big-v2:red:sata0",  3, netxbig_v2_red_mled,       2),
+	NETXBIG_LED("net2big-v2:blue:sata1", 4, netxbig_v2_blue_sata_mled, 2),
+	NETXBIG_LED("net2big-v2:red:sata1",  4, netxbig_v2_red_mled,       2),
+};
+
+static struct netxbig_led_platform_data net2big_v2_leds_data = {
+	.gpio_ext	= &netxbig_v2_gpio_ext,
+	.timer		= netxbig_v2_led_timer,
+	.num_timer	= ARRAY_SIZE(netxbig_v2_led_timer),
+	.leds		= net2big_v2_leds_ctrl,
+	.num_leds	= ARRAY_SIZE(net2big_v2_leds_ctrl),
+};
+
+static struct netxbig_led net5big_v2_leds_ctrl[] = {
+	NETXBIG_LED("net5big-v2:blue:power", 0, netxbig_v2_blue_pwr_mled,  1),
+	NETXBIG_LED("net5big-v2:red:power",  0, netxbig_v2_red_mled,       1),
+	NETXBIG_LED("net5big-v2:blue:sata0", 3, netxbig_v2_blue_sata_mled, 2),
+	NETXBIG_LED("net5big-v2:red:sata0",  3, netxbig_v2_red_mled,       2),
+	NETXBIG_LED("net5big-v2:blue:sata1", 4, netxbig_v2_blue_sata_mled, 2),
+	NETXBIG_LED("net5big-v2:red:sata1",  4, netxbig_v2_red_mled,       2),
+	NETXBIG_LED("net5big-v2:blue:sata2", 5, netxbig_v2_blue_sata_mled, 2),
+	NETXBIG_LED("net5big-v2:red:sata2",  5, netxbig_v2_red_mled,       2),
+	NETXBIG_LED("net5big-v2:blue:sata3", 6, netxbig_v2_blue_sata_mled, 2),
+	NETXBIG_LED("net5big-v2:red:sata3",  6, netxbig_v2_red_mled,       2),
+	NETXBIG_LED("net5big-v2:blue:sata4", 7, netxbig_v2_blue_sata_mled, 2),
+	NETXBIG_LED("net5big-v2:red:sata4",  7, netxbig_v2_red_mled,       2),
+};
+
+static struct netxbig_led_platform_data net5big_v2_leds_data = {
+	.gpio_ext	= &netxbig_v2_gpio_ext,
+	.timer		= netxbig_v2_led_timer,
+	.num_timer	= ARRAY_SIZE(netxbig_v2_led_timer),
+	.leds		= net5big_v2_leds_ctrl,
+	.num_leds	= ARRAY_SIZE(net5big_v2_leds_ctrl),
+};
+
+static struct platform_device netxbig_v2_leds = {
+	.name		= "leds-netxbig",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &net2big_v2_leds_data,
+	},
+};
+
+void __init netxbig_init(void)
+{
+
+	if (of_machine_is_compatible("lacie,net5big_v2"))
+		netxbig_v2_leds.dev.platform_data = &net5big_v2_leds_data;
+	platform_device_register(&netxbig_v2_leds);
+}
diff --git a/arch/arm/mach-mvebu/platsmp-a9.c b/arch/arm/mach-mvebu/platsmp-a9.c
index 96c2c59e34b..47a71a924b9 100644
--- a/arch/arm/mach-mvebu/platsmp-a9.c
+++ b/arch/arm/mach-mvebu/platsmp-a9.c
@@ -20,33 +20,8 @@
 #include <asm/smp_scu.h>
 #include <asm/smp_plat.h>
 #include "common.h"
-#include "mvebu-soc-id.h"
 #include "pmsu.h"
 
-#define CRYPT0_ENG_ID   41
-#define CRYPT0_ENG_ATTR 0x1
-#define SRAM_PHYS_BASE  0xFFFF0000
-
-#define BOOTROM_BASE    0xFFF00000
-#define BOOTROM_SIZE    0x100000
-
-extern unsigned char armada_375_smp_cpu1_enable_code_end;
-extern unsigned char armada_375_smp_cpu1_enable_code_start;
-
-void armada_375_smp_cpu1_enable_wa(void)
-{
-	void __iomem *sram_virt_base;
-
-	mvebu_mbus_del_window(BOOTROM_BASE, BOOTROM_SIZE);
-	mvebu_mbus_add_window_by_id(CRYPT0_ENG_ID, CRYPT0_ENG_ATTR,
-				SRAM_PHYS_BASE, SZ_64K);
-	sram_virt_base = ioremap(SRAM_PHYS_BASE, SZ_64K);
-
-	memcpy(sram_virt_base, &armada_375_smp_cpu1_enable_code_start,
-	       &armada_375_smp_cpu1_enable_code_end
-	       - &armada_375_smp_cpu1_enable_code_start);
-}
-
 extern void mvebu_cortex_a9_secondary_startup(void);
 
 static int __cpuinit mvebu_cortex_a9_boot_secondary(unsigned int cpu,
@@ -63,21 +38,10 @@ static int __cpuinit mvebu_cortex_a9_boot_secondary(unsigned int cpu,
 	 * address.
 	 */
 	hw_cpu = cpu_logical_map(cpu);
-
-	if (of_machine_is_compatible("marvell,armada375")) {
-		u32 dev, rev;
-
-		if (mvebu_get_soc_id(&dev, &rev) == 0 &&
-		    rev == ARMADA_375_Z1_REV)
-			armada_375_smp_cpu1_enable_wa();
-
+	if (of_machine_is_compatible("marvell,armada375"))
 		mvebu_system_controller_set_cpu_boot_addr(mvebu_cortex_a9_secondary_startup);
-	}
-	else {
-		mvebu_pmsu_set_cpu_boot_addr(hw_cpu,
-					     mvebu_cortex_a9_secondary_startup);
-	}
-
+	else
+		mvebu_pmsu_set_cpu_boot_addr(hw_cpu, mvebu_cortex_a9_secondary_startup);
 	smp_wmb();
 	ret = mvebu_cpu_reset_deassert(hw_cpu);
 	if (ret) {
@@ -91,9 +55,6 @@ static int __cpuinit mvebu_cortex_a9_boot_secondary(unsigned int cpu,
 
 static struct smp_operations mvebu_cortex_a9_smp_ops __initdata = {
 	.smp_boot_secondary	= mvebu_cortex_a9_boot_secondary,
-#ifdef CONFIG_HOTPLUG_CPU
-	.cpu_die		= armada_xp_cpu_die,
-#endif
 };
 
 CPU_METHOD_OF_DECLARE(mvebu_armada_375_smp, "marvell,armada-375-smp",
diff --git a/arch/arm/mach-mvebu/platsmp.c b/arch/arm/mach-mvebu/platsmp.c
index 88b976b3171..895dc373c8a 100644
--- a/arch/arm/mach-mvebu/platsmp.c
+++ b/arch/arm/mach-mvebu/platsmp.c
@@ -67,6 +67,7 @@ static void __init set_secondary_cpus_clock(void)
 		if (!cpu_clk)
 			return;
 		clk_set_rate(cpu_clk, rate);
+		clk_prepare_enable(cpu_clk);
 	}
 }
 
@@ -78,6 +79,17 @@ static int armada_xp_boot_secondary(unsigned int cpu, struct task_struct *idle)
 
 	hw_cpu = cpu_logical_map(cpu);
 	mvebu_pmsu_set_cpu_boot_addr(hw_cpu, armada_xp_secondary_startup);
+
+	/*
+	 * This is needed to wake up CPUs in the offline state after
+	 * using CPU hotplug.
+	 */
+	arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+
+	/*
+	 * This is needed to take secondary CPUs out of reset on the
+	 * initial boot.
+	 */
 	ret = mvebu_cpu_reset_deassert(hw_cpu);
 	if (ret) {
 		pr_warn("unable to boot CPU: %d\n", ret);
@@ -87,6 +99,19 @@ static int armada_xp_boot_secondary(unsigned int cpu, struct task_struct *idle)
 	return 0;
 }
 
+/*
+ * When a CPU is brought back online, either through CPU hotplug, or
+ * because of the boot of a kexec'ed kernel, the PMSU configuration
+ * for this CPU might be in the deep idle state, preventing this CPU
+ * from receiving interrupts. Here, we therefore take out the current
+ * CPU from this state, which was entered by armada_xp_cpu_die()
+ * below.
+ */
+static void armada_xp_secondary_init(unsigned int cpu)
+{
+	mvebu_v7_pmsu_idle_exit();
+}
+
 static void __init armada_xp_smp_init_cpus(void)
 {
 	unsigned int ncores = num_possible_cpus();
@@ -122,12 +147,36 @@ static void __init armada_xp_smp_prepare_cpus(unsigned int max_cpus)
 		panic("The address for the BootROM is incorrect");
 }
 
+#ifdef CONFIG_HOTPLUG_CPU
+static void armada_xp_cpu_die(unsigned int cpu)
+{
+	/*
+	 * CPU hotplug is implemented by putting offline CPUs into the
+	 * deep idle sleep state.
+	 */
+	armada_370_xp_pmsu_idle_enter(true);
+}
+
+/*
+ * We need a dummy function, so that platform_can_cpu_hotplug() knows
+ * we support CPU hotplug. However, the function does not need to do
+ * anything, because CPUs going offline can enter the deep idle state
+ * by themselves, without any help from a still alive CPU.
+ */
+static int armada_xp_cpu_kill(unsigned int cpu)
+{
+	return 1;
+}
+#endif
+
 struct smp_operations armada_xp_smp_ops __initdata = {
 	.smp_init_cpus		= armada_xp_smp_init_cpus,
 	.smp_prepare_cpus	= armada_xp_smp_prepare_cpus,
 	.smp_boot_secondary	= armada_xp_boot_secondary,
+	.smp_secondary_init     = armada_xp_secondary_init,
 #ifdef CONFIG_HOTPLUG_CPU
 	.cpu_die		= armada_xp_cpu_die,
+	.cpu_kill               = armada_xp_cpu_kill,
 #endif
 };
 
diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c
index 25aa8237d66..8a70a51533f 100644
--- a/arch/arm/mach-mvebu/pmsu.c
+++ b/arch/arm/mach-mvebu/pmsu.c
@@ -18,22 +18,29 @@
 
 #define pr_fmt(fmt) "mvebu-pmsu: " fmt
 
+#include <linux/clk.h>
 #include <linux/cpu_pm.h>
-#include <linux/kernel.h>
+#include <linux/delay.h>
 #include <linux/init.h>
-#include <linux/of_address.h>
 #include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mbus.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
-#include <linux/smp.h>
+#include <linux/pm_opp.h>
 #include <linux/resource.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
 #include <asm/cacheflush.h>
 #include <asm/cp15.h>
+#include <asm/smp_scu.h>
 #include <asm/smp_plat.h>
 #include <asm/suspend.h>
 #include <asm/tlbflush.h>
 #include "common.h"
+#include "armada-370-xp.h"
 
-static void __iomem *pmsu_mp_base;
 
 #define PMSU_BASE_OFFSET    0x100
 #define PMSU_REG_SIZE	    0x1000
@@ -57,20 +64,45 @@ static void __iomem *pmsu_mp_base;
 #define PMSU_STATUS_AND_MASK_IRQ_MASK		BIT(24)
 #define PMSU_STATUS_AND_MASK_FIQ_MASK		BIT(25)
 
+#define PMSU_EVENT_STATUS_AND_MASK(cpu)     ((cpu * 0x100) + 0x120)
+#define PMSU_EVENT_STATUS_AND_MASK_DFS_DONE        BIT(1)
+#define PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK   BIT(17)
+
 #define PMSU_BOOT_ADDR_REDIRECT_OFFSET(cpu) ((cpu * 0x100) + 0x124)
 
 /* PMSU fabric registers */
 #define L2C_NFABRIC_PM_CTL		    0x4
 #define L2C_NFABRIC_PM_CTL_PWR_DOWN		BIT(20)
 
+/* PMSU delay registers */
+#define PMSU_POWERDOWN_DELAY		    0xF04
+#define PMSU_POWERDOWN_DELAY_PMU		BIT(1)
+#define PMSU_POWERDOWN_DELAY_MASK		0xFFFE
+#define PMSU_DFLT_ARMADA38X_DELAY	        0x64
+
+/* CA9 MPcore SoC Control registers */
+
+#define MPCORE_RESET_CTL		    0x64
+#define MPCORE_RESET_CTL_L2			BIT(0)
+#define MPCORE_RESET_CTL_DEBUG			BIT(16)
+
+#define SRAM_PHYS_BASE  0xFFFF0000
+#define BOOTROM_BASE    0xFFF00000
+#define BOOTROM_SIZE    0x100000
+
+#define ARMADA_370_CRYPT0_ENG_TARGET   0x9
+#define ARMADA_370_CRYPT0_ENG_ATTR     0x1
+
 extern void ll_disable_coherency(void);
 extern void ll_enable_coherency(void);
 
 extern void armada_370_xp_cpu_resume(void);
+extern void armada_38x_cpu_resume(void);
 
-static struct platform_device armada_xp_cpuidle_device = {
-	.name = "cpuidle-armada-370-xp",
-};
+static phys_addr_t pmsu_mp_phys_base;
+static void __iomem *pmsu_mp_base;
+
+static void *mvebu_cpu_resume;
 
 static struct of_device_id of_pmsu_table[] = {
 	{ .compatible = "marvell,armada-370-pmsu", },
@@ -85,7 +117,49 @@ void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr)
 		PMSU_BOOT_ADDR_REDIRECT_OFFSET(hw_cpu));
 }
 
-static int __init armada_370_xp_pmsu_init(void)
+extern unsigned char mvebu_boot_wa_start;
+extern unsigned char mvebu_boot_wa_end;
+
+/*
+ * This function sets up the boot address workaround needed for SMP
+ * boot on Armada 375 Z1 and cpuidle on Armada 370. It unmaps the
+ * BootROM Mbus window, and instead remaps a crypto SRAM into which a
+ * custom piece of code is copied to replace the problematic BootROM.
+ */
+int mvebu_setup_boot_addr_wa(unsigned int crypto_eng_target,
+			     unsigned int crypto_eng_attribute,
+			     phys_addr_t resume_addr_reg)
+{
+	void __iomem *sram_virt_base;
+	u32 code_len = &mvebu_boot_wa_end - &mvebu_boot_wa_start;
+
+	mvebu_mbus_del_window(BOOTROM_BASE, BOOTROM_SIZE);
+	mvebu_mbus_add_window_by_id(crypto_eng_target, crypto_eng_attribute,
+				    SRAM_PHYS_BASE, SZ_64K);
+
+	sram_virt_base = ioremap(SRAM_PHYS_BASE, SZ_64K);
+	if (!sram_virt_base) {
+		pr_err("Unable to map SRAM to setup the boot address WA\n");
+		return -ENOMEM;
+	}
+
+	memcpy(sram_virt_base, &mvebu_boot_wa_start, code_len);
+
+	/*
+	 * The last word of the code copied in SRAM must contain the
+	 * physical base address of the PMSU register. We
+	 * intentionally store this address in the native endianness
+	 * of the system.
+	 */
+	__raw_writel((unsigned long)resume_addr_reg,
+		     sram_virt_base + code_len - 4);
+
+	iounmap(sram_virt_base);
+
+	return 0;
+}
+
+static int __init mvebu_v7_pmsu_init(void)
 {
 	struct device_node *np;
 	struct resource res;
@@ -116,6 +190,8 @@ static int __init armada_370_xp_pmsu_init(void)
 		goto out;
 	}
 
+	pmsu_mp_phys_base = res.start;
+
 	pmsu_mp_base = ioremap(res.start, resource_size(&res));
 	if (!pmsu_mp_base) {
 		pr_err("unable to map registers\n");
@@ -129,7 +205,7 @@ static int __init armada_370_xp_pmsu_init(void)
 	return ret;
 }
 
-static void armada_370_xp_pmsu_enable_l2_powerdown_onidle(void)
+static void mvebu_v7_pmsu_enable_l2_powerdown_onidle(void)
 {
 	u32 reg;
 
@@ -142,14 +218,20 @@ static void armada_370_xp_pmsu_enable_l2_powerdown_onidle(void)
 	writel(reg, pmsu_mp_base + L2C_NFABRIC_PM_CTL);
 }
 
+enum pmsu_idle_prepare_flags {
+	PMSU_PREPARE_NORMAL = 0,
+	PMSU_PREPARE_DEEP_IDLE = BIT(0),
+	PMSU_PREPARE_SNOOP_DISABLE = BIT(1),
+};
+
 /* No locking is needed because we only access per-CPU registers */
-void armada_370_xp_pmsu_idle_prepare(bool deepidle)
+static int mvebu_v7_pmsu_idle_prepare(unsigned long flags)
 {
 	unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
 	u32 reg;
 
 	if (pmsu_mp_base == NULL)
-		return;
+		return -EINVAL;
 
 	/*
 	 * Adjust the PMSU configuration to wait for WFI signal, enable
@@ -167,22 +249,34 @@ void armada_370_xp_pmsu_idle_prepare(bool deepidle)
 
 	reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
 	/* ask HW to power down the L2 Cache if needed */
-	if (deepidle)
+	if (flags & PMSU_PREPARE_DEEP_IDLE)
 		reg |= PMSU_CONTROL_AND_CONFIG_L2_PWDDN;
 
 	/* request power down */
 	reg |= PMSU_CONTROL_AND_CONFIG_PWDDN_REQ;
 	writel(reg, pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
 
-	/* Disable snoop disable by HW - SW is taking care of it */
-	reg = readl(pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
-	reg |= PMSU_CPU_POWER_DOWN_DIS_SNP_Q_SKIP;
-	writel(reg, pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+	if (flags & PMSU_PREPARE_SNOOP_DISABLE) {
+		/* Disable snoop disable by HW - SW is taking care of it */
+		reg = readl(pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+		reg |= PMSU_CPU_POWER_DOWN_DIS_SNP_Q_SKIP;
+		writel(reg, pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+	}
+
+	return 0;
 }
 
-static noinline int do_armada_370_xp_cpu_suspend(unsigned long deepidle)
+int armada_370_xp_pmsu_idle_enter(unsigned long deepidle)
 {
-	armada_370_xp_pmsu_idle_prepare(deepidle);
+	unsigned long flags = PMSU_PREPARE_SNOOP_DISABLE;
+	int ret;
+
+	if (deepidle)
+		flags |= PMSU_PREPARE_DEEP_IDLE;
+
+	ret = mvebu_v7_pmsu_idle_prepare(flags);
+	if (ret)
+		return ret;
 
 	v7_exit_coherency_flush(all);
 
@@ -208,25 +302,50 @@ static noinline int do_armada_370_xp_cpu_suspend(unsigned long deepidle)
 	"isb	"
 	: : : "r0");
 
-	pr_warn("Failed to suspend the system\n");
+	pr_debug("Failed to suspend the system\n");
 
 	return 0;
 }
 
 static int armada_370_xp_cpu_suspend(unsigned long deepidle)
 {
-	return cpu_suspend(deepidle, do_armada_370_xp_cpu_suspend);
+	return cpu_suspend(deepidle, armada_370_xp_pmsu_idle_enter);
+}
+
+static int armada_38x_do_cpu_suspend(unsigned long deepidle)
+{
+	unsigned long flags = 0;
+
+	if (deepidle)
+		flags |= PMSU_PREPARE_DEEP_IDLE;
+
+	mvebu_v7_pmsu_idle_prepare(flags);
+	/*
+	 * Already flushed cache, but do it again as the outer cache
+	 * functions dirty the cache with spinlocks
+	 */
+	v7_exit_coherency_flush(louis);
+
+	scu_power_mode(mvebu_get_scu_base(), SCU_PM_POWEROFF);
+
+	cpu_do_idle();
+
+	return 1;
+}
+
+static int armada_38x_cpu_suspend(unsigned long deepidle)
+{
+	return cpu_suspend(false, armada_38x_do_cpu_suspend);
 }
 
 /* No locking is needed because we only access per-CPU registers */
-static noinline void armada_370_xp_pmsu_idle_restore(void)
+void mvebu_v7_pmsu_idle_exit(void)
 {
 	unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
 	u32 reg;
 
 	if (pmsu_mp_base == NULL)
 		return;
-
 	/* cancel ask HW to power down the L2 Cache if possible */
 	reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
 	reg &= ~PMSU_CONTROL_AND_CONFIG_L2_PWDDN;
@@ -241,53 +360,292 @@ static noinline void armada_370_xp_pmsu_idle_restore(void)
 	writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(hw_cpu));
 }
 
-static int armada_370_xp_cpu_pm_notify(struct notifier_block *self,
+static int mvebu_v7_cpu_pm_notify(struct notifier_block *self,
 				    unsigned long action, void *hcpu)
 {
 	if (action == CPU_PM_ENTER) {
 		unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
-		mvebu_pmsu_set_cpu_boot_addr(hw_cpu, armada_370_xp_cpu_resume);
+		mvebu_pmsu_set_cpu_boot_addr(hw_cpu, mvebu_cpu_resume);
 	} else if (action == CPU_PM_EXIT) {
-		armada_370_xp_pmsu_idle_restore();
+		mvebu_v7_pmsu_idle_exit();
 	}
 
 	return NOTIFY_OK;
 }
 
-static struct notifier_block armada_370_xp_cpu_pm_notifier = {
-	.notifier_call = armada_370_xp_cpu_pm_notify,
+static struct notifier_block mvebu_v7_cpu_pm_notifier = {
+	.notifier_call = mvebu_v7_cpu_pm_notify,
 };
 
-int __init armada_370_xp_cpu_pm_init(void)
+static struct platform_device mvebu_v7_cpuidle_device;
+
+static __init int armada_370_cpuidle_init(void)
 {
 	struct device_node *np;
+	phys_addr_t redirect_reg;
+
+	np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric");
+	if (!np)
+		return -ENODEV;
+	of_node_put(np);
 
 	/*
-	 * Check that all the requirements are available to enable
-	 * cpuidle. So far, it is only supported on Armada XP, cpuidle
-	 * needs the coherency fabric and the PMSU enabled
+	 * On Armada 370, there is "a slow exit process from the deep
+	 * idle state due to heavy L1/L2 cache cleanup operations
+	 * performed by the BootROM software". To avoid this, we
+	 * replace the restart code of the bootrom by a a simple jump
+	 * to the boot address. Then the code located at this boot
+	 * address will take care of the initialization.
 	 */
+	redirect_reg = pmsu_mp_phys_base + PMSU_BOOT_ADDR_REDIRECT_OFFSET(0);
+	mvebu_setup_boot_addr_wa(ARMADA_370_CRYPT0_ENG_TARGET,
+				 ARMADA_370_CRYPT0_ENG_ATTR,
+				 redirect_reg);
 
-	if (!of_machine_is_compatible("marvell,armadaxp"))
-		return 0;
+	mvebu_cpu_resume = armada_370_xp_cpu_resume;
+	mvebu_v7_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
+	mvebu_v7_cpuidle_device.name = "cpuidle-armada-370";
+
+	return 0;
+}
+
+static __init int armada_38x_cpuidle_init(void)
+{
+	struct device_node *np;
+	void __iomem *mpsoc_base;
+	u32 reg;
+
+	np = of_find_compatible_node(NULL, NULL,
+				     "marvell,armada-380-coherency-fabric");
+	if (!np)
+		return -ENODEV;
+	of_node_put(np);
+
+	np = of_find_compatible_node(NULL, NULL,
+				     "marvell,armada-380-mpcore-soc-ctrl");
+	if (!np)
+		return -ENODEV;
+	mpsoc_base = of_iomap(np, 0);
+	BUG_ON(!mpsoc_base);
+	of_node_put(np);
+
+	/* Set up reset mask when powering down the cpus */
+	reg = readl(mpsoc_base + MPCORE_RESET_CTL);
+	reg |= MPCORE_RESET_CTL_L2;
+	reg |= MPCORE_RESET_CTL_DEBUG;
+	writel(reg, mpsoc_base + MPCORE_RESET_CTL);
+	iounmap(mpsoc_base);
+
+	/* Set up delay */
+	reg = readl(pmsu_mp_base + PMSU_POWERDOWN_DELAY);
+	reg &= ~PMSU_POWERDOWN_DELAY_MASK;
+	reg |= PMSU_DFLT_ARMADA38X_DELAY;
+	reg |= PMSU_POWERDOWN_DELAY_PMU;
+	writel(reg, pmsu_mp_base + PMSU_POWERDOWN_DELAY);
+
+	mvebu_cpu_resume = armada_38x_cpu_resume;
+	mvebu_v7_cpuidle_device.dev.platform_data = armada_38x_cpu_suspend;
+	mvebu_v7_cpuidle_device.name = "cpuidle-armada-38x";
+
+	return 0;
+}
+
+static __init int armada_xp_cpuidle_init(void)
+{
+	struct device_node *np;
 
 	np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric");
 	if (!np)
-		return 0;
+		return -ENODEV;
 	of_node_put(np);
 
+	mvebu_cpu_resume = armada_370_xp_cpu_resume;
+	mvebu_v7_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
+	mvebu_v7_cpuidle_device.name = "cpuidle-armada-xp";
+
+	return 0;
+}
+
+static int __init mvebu_v7_cpu_pm_init(void)
+{
+	struct device_node *np;
+	int ret;
+
 	np = of_find_matching_node(NULL, of_pmsu_table);
 	if (!np)
 		return 0;
 	of_node_put(np);
 
-	armada_370_xp_pmsu_enable_l2_powerdown_onidle();
-	armada_xp_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
-	platform_device_register(&armada_xp_cpuidle_device);
-	cpu_pm_register_notifier(&armada_370_xp_cpu_pm_notifier);
+	if (of_machine_is_compatible("marvell,armadaxp"))
+		ret = armada_xp_cpuidle_init();
+	else if (of_machine_is_compatible("marvell,armada370"))
+		ret = armada_370_cpuidle_init();
+	else if (of_machine_is_compatible("marvell,armada380"))
+		ret = armada_38x_cpuidle_init();
+	else
+		return 0;
+
+	if (ret)
+		return ret;
+
+	mvebu_v7_pmsu_enable_l2_powerdown_onidle();
+	platform_device_register(&mvebu_v7_cpuidle_device);
+	cpu_pm_register_notifier(&mvebu_v7_cpu_pm_notifier);
+
+	return 0;
+}
+
+arch_initcall(mvebu_v7_cpu_pm_init);
+early_initcall(mvebu_v7_pmsu_init);
+
+static void mvebu_pmsu_dfs_request_local(void *data)
+{
+	u32 reg;
+	u32 cpu = smp_processor_id();
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	/* Prepare to enter idle */
+	reg = readl(pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+	reg |= PMSU_STATUS_AND_MASK_CPU_IDLE_WAIT |
+	       PMSU_STATUS_AND_MASK_IRQ_MASK     |
+	       PMSU_STATUS_AND_MASK_FIQ_MASK;
+	writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+
+	/* Request the DFS transition */
+	reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(cpu));
+	reg |= PMSU_CONTROL_AND_CONFIG_DFS_REQ;
+	writel(reg, pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(cpu));
+
+	/* The fact of entering idle will trigger the DFS transition */
+	wfi();
+
+	/*
+	 * We're back from idle, the DFS transition has completed,
+	 * clear the idle wait indication.
+	 */
+	reg = readl(pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+	reg &= ~PMSU_STATUS_AND_MASK_CPU_IDLE_WAIT;
+	writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+
+	local_irq_restore(flags);
+}
+
+int mvebu_pmsu_dfs_request(int cpu)
+{
+	unsigned long timeout;
+	int hwcpu = cpu_logical_map(cpu);
+	u32 reg;
+
+	/* Clear any previous DFS DONE event */
+	reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+	reg &= ~PMSU_EVENT_STATUS_AND_MASK_DFS_DONE;
+	writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+	/* Mask the DFS done interrupt, since we are going to poll */
+	reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+	reg |= PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK;
+	writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+	/* Trigger the DFS on the appropriate CPU */
+	smp_call_function_single(cpu, mvebu_pmsu_dfs_request_local,
+				 NULL, false);
+
+	/* Poll until the DFS done event is generated */
+	timeout = jiffies + HZ;
+	while (time_before(jiffies, timeout)) {
+		reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+		if (reg & PMSU_EVENT_STATUS_AND_MASK_DFS_DONE)
+			break;
+		udelay(10);
+	}
+
+	if (time_after(jiffies, timeout))
+		return -ETIME;
+
+	/* Restore the DFS mask to its original state */
+	reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+	reg &= ~PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK;
+	writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+	return 0;
+}
+
+static int __init armada_xp_pmsu_cpufreq_init(void)
+{
+	struct device_node *np;
+	struct resource res;
+	int ret, cpu;
+
+	if (!of_machine_is_compatible("marvell,armadaxp"))
+		return 0;
+
+	/*
+	 * In order to have proper cpufreq handling, we need to ensure
+	 * that the Device Tree description of the CPU clock includes
+	 * the definition of the PMU DFS registers. If not, we do not
+	 * register the clock notifier and the cpufreq driver. This
+	 * piece of code is only for compatibility with old Device
+	 * Trees.
+	 */
+	np = of_find_compatible_node(NULL, NULL, "marvell,armada-xp-cpu-clock");
+	if (!np)
+		return 0;
+
+	ret = of_address_to_resource(np, 1, &res);
+	if (ret) {
+		pr_warn(FW_WARN "not enabling cpufreq, deprecated armada-xp-cpu-clock binding\n");
+		of_node_put(np);
+		return 0;
+	}
+
+	of_node_put(np);
+
+	/*
+	 * For each CPU, this loop registers the operating points
+	 * supported (which are the nominal CPU frequency and half of
+	 * it), and registers the clock notifier that will take care
+	 * of doing the PMSU part of a frequency transition.
+	 */
+	for_each_possible_cpu(cpu) {
+		struct device *cpu_dev;
+		struct clk *clk;
+		int ret;
+
+		cpu_dev = get_cpu_device(cpu);
+		if (!cpu_dev) {
+			pr_err("Cannot get CPU %d\n", cpu);
+			continue;
+		}
+
+		clk = clk_get(cpu_dev, 0);
+		if (IS_ERR(clk)) {
+			pr_err("Cannot get clock for CPU %d\n", cpu);
+			return PTR_ERR(clk);
+		}
+
+		/*
+		 * In case of a failure of dev_pm_opp_add(), we don't
+		 * bother with cleaning up the registered OPP (there's
+		 * no function to do so), and simply cancel the
+		 * registration of the cpufreq device.
+		 */
+		ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk), 0);
+		if (ret) {
+			clk_put(clk);
+			return ret;
+		}
+
+		ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk) / 2, 0);
+		if (ret) {
+			clk_put(clk);
+			return ret;
+		}
+	}
 
+	platform_device_register_simple("cpufreq-generic", -1, NULL, 0);
 	return 0;
 }
 
-arch_initcall(armada_370_xp_cpu_pm_init);
-early_initcall(armada_370_xp_pmsu_init);
+device_initcall(armada_xp_pmsu_cpufreq_init);
diff --git a/arch/arm/mach-mvebu/pmsu.h b/arch/arm/mach-mvebu/pmsu.h
index 07a737c6b95..6b58c1fe2b0 100644
--- a/arch/arm/mach-mvebu/pmsu.h
+++ b/arch/arm/mach-mvebu/pmsu.h
@@ -12,5 +12,10 @@
 #define __MACH_MVEBU_PMSU_H
 
 int armada_xp_boot_cpu(unsigned int cpu_id, void *phys_addr);
+int mvebu_setup_boot_addr_wa(unsigned int crypto_eng_target,
+                             unsigned int crypto_eng_attribute,
+                             phys_addr_t resume_addr_reg);
+
+void mvebu_v7_pmsu_idle_exit(void);
 
 #endif	/* __MACH_370_XP_PMSU_H */
diff --git a/arch/arm/mach-mvebu/pmsu_ll.S b/arch/arm/mach-mvebu/pmsu_ll.S
index fc3de68d8c5..a945756cfb4 100644
--- a/arch/arm/mach-mvebu/pmsu_ll.S
+++ b/arch/arm/mach-mvebu/pmsu_ll.S
@@ -23,3 +23,39 @@ ARM_BE8(setend	be )			@ go BE8 if entered LE
 	b	cpu_resume
 ENDPROC(armada_370_xp_cpu_resume)
 
+ENTRY(armada_38x_cpu_resume)
+	/* do we need it for Armada 38x*/
+ARM_BE8(setend	be )			@ go BE8 if entered LE
+	bl	v7_invalidate_l1
+	mrc     p15, 4, r1, c15, c0	@ get SCU base address
+	orr	r1, r1, #0x8		@ SCU CPU Power Status Register
+	mrc	15, 0, r0, cr0, cr0, 5	@ get the CPU ID
+	and	r0, r0, #15
+	add	r1, r1, r0
+	mov	r0, #0x0
+	strb	r0, [r1]		@ switch SCU power state to Normal mode
+	b	cpu_resume
+ENDPROC(armada_38x_cpu_resume)
+
+.global mvebu_boot_wa_start
+.global mvebu_boot_wa_end
+
+/* The following code will be executed from SRAM */
+ENTRY(mvebu_boot_wa_start)
+mvebu_boot_wa_start:
+ARM_BE8(setend	be)
+	adr	r0, 1f
+	ldr	r0, [r0]		@ load the address of the
+					@ resume register
+	ldr	r0, [r0]		@ load the value in the
+					@ resume register
+ARM_BE8(rev	r0, r0)			@ the value is stored LE
+	mov	pc, r0			@ jump to this value
+/*
+ * the last word of this piece of code will be filled by the physical
+ * address of the boot address register just after being copied in SRAM
+ */
+1:
+	.long   .
+mvebu_boot_wa_end:
+ENDPROC(mvebu_boot_wa_end)
diff --git a/arch/arm/mach-mvebu/system-controller.c b/arch/arm/mach-mvebu/system-controller.c
index 0c5524ac75b..a068cb5c2ce 100644
--- a/arch/arm/mach-mvebu/system-controller.c
+++ b/arch/arm/mach-mvebu/system-controller.c
@@ -28,8 +28,14 @@
 #include <linux/io.h>
 #include <linux/reboot.h>
 #include "common.h"
+#include "mvebu-soc-id.h"
+#include "pmsu.h"
+
+#define ARMADA_375_CRYPT0_ENG_TARGET 41
+#define ARMADA_375_CRYPT0_ENG_ATTR    1
 
 static void __iomem *system_controller_base;
+static phys_addr_t system_controller_phys_base;
 
 struct mvebu_system_controller {
 	u32 rstoutn_mask_offset;
@@ -39,6 +45,9 @@ struct mvebu_system_controller {
 	u32 system_soft_reset;
 
 	u32 resume_boot_addr;
+
+	u32 dev_id;
+	u32 rev_id;
 };
 static struct mvebu_system_controller *mvebu_sc;
 
@@ -47,6 +56,8 @@ static const struct mvebu_system_controller armada_370_xp_system_controller = {
 	.system_soft_reset_offset = 0x64,
 	.rstoutn_mask_reset_out_en = 0x1,
 	.system_soft_reset = 0x1,
+	.dev_id = 0x38,
+	.rev_id = 0x3c,
 };
 
 static const struct mvebu_system_controller armada_375_system_controller = {
@@ -55,6 +66,8 @@ static const struct mvebu_system_controller armada_375_system_controller = {
 	.rstoutn_mask_reset_out_en = 0x1,
 	.system_soft_reset = 0x1,
 	.resume_boot_addr = 0xd4,
+	.dev_id = 0x38,
+	.rev_id = 0x3c,
 };
 
 static const struct mvebu_system_controller orion_system_controller = {
@@ -101,11 +114,45 @@ void mvebu_restart(enum reboot_mode mode, const char *cmd)
 		;
 }
 
+int mvebu_system_controller_get_soc_id(u32 *dev, u32 *rev)
+{
+	if (of_machine_is_compatible("marvell,armada380") &&
+		system_controller_base) {
+		*dev = readl(system_controller_base + mvebu_sc->dev_id) >> 16;
+		*rev = (readl(system_controller_base + mvebu_sc->rev_id) >> 8)
+			& 0xF;
+		return 0;
+	} else
+		return -ENODEV;
+}
+
 #ifdef CONFIG_SMP
+void mvebu_armada375_smp_wa_init(void)
+{
+	u32 dev, rev;
+	phys_addr_t resume_addr_reg;
+
+	if (mvebu_get_soc_id(&dev, &rev) != 0)
+		return;
+
+	if (rev != ARMADA_375_Z1_REV)
+		return;
+
+	resume_addr_reg = system_controller_phys_base +
+		mvebu_sc->resume_boot_addr;
+	mvebu_setup_boot_addr_wa(ARMADA_375_CRYPT0_ENG_TARGET,
+				 ARMADA_375_CRYPT0_ENG_ATTR,
+				 resume_addr_reg);
+}
+
 void mvebu_system_controller_set_cpu_boot_addr(void *boot_addr)
 {
 	BUG_ON(system_controller_base == NULL);
 	BUG_ON(mvebu_sc->resume_boot_addr == 0);
+
+	if (of_machine_is_compatible("marvell,armada375"))
+		mvebu_armada375_smp_wa_init();
+
 	writel(virt_to_phys(boot_addr), system_controller_base +
 	       mvebu_sc->resume_boot_addr);
 }
@@ -119,7 +166,10 @@ static int __init mvebu_system_controller_init(void)
 	np = of_find_matching_node_and_match(NULL, of_system_controller_table,
 					     &match);
 	if (np) {
+		struct resource res;
 		system_controller_base = of_iomap(np, 0);
+		of_address_to_resource(np, 0, &res);
+		system_controller_phys_base = res.start;
 		mvebu_sc = (struct mvebu_system_controller *)match->data;
 		of_node_put(np);
 	}