Merge branch 'next' (accumulated 3.16 merge window patches) into master

Now that 3.15 is released, this merges the 'next' branch into 'master',
bringing us to the normal situation where my 'master' branch is the
merge window.

* accumulated work in next: (6809 commits)
  ufs: sb mutex merge + mutex_destroy
  powerpc: update comments for generic idle conversion
  cris: update comments for generic idle conversion
  idle: remove cpu_idle() forward declarations
  nbd: zero from and len fields in NBD_CMD_DISCONNECT.
  mm: convert some level-less printks to pr_*
  MAINTAINERS: adi-buildroot-devel is moderated
  MAINTAINERS: add linux-api for review of API/ABI changes
  mm/kmemleak-test.c: use pr_fmt for logging
  fs/dlm/debug_fs.c: replace seq_printf by seq_puts
  fs/dlm/lockspace.c: convert simple_str to kstr
  fs/dlm/config.c: convert simple_str to kstr
  mm: mark remap_file_pages() syscall as deprecated
  mm: memcontrol: remove unnecessary memcg argument from soft limit functions
  mm: memcontrol: clean up memcg zoneinfo lookup
  mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
  mm/mempool.c: update the kmemleak stack trace for mempool allocations
  lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
  mm: introduce kmemleak_update_trace()
  mm/kmemleak.c: use %u to print ->checksum
  ...

7 files changed, 1166 insertions, 308 deletions

diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index 552373c4e362..a118ec1650fa 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -4,6 +4,14 @@
 
 menu "Bus devices"
 
+config BRCMSTB_GISB_ARB
+	bool "Broadcom STB GISB bus arbiter"
+	depends on ARM
+	help
+	  Driver for the Broadcom Set Top Box System-on-a-chip internal bus
+	  arbiter. This driver provides timeout and target abort error handling
+	  and internal bus master decoding.
+
 config IMX_WEIM
 	bool "Freescale EIM DRIVER"
 	depends on ARCH_MXC
@@ -41,4 +49,14 @@ config ARM_CCI
 	help
 	  Driver supporting the CCI cache coherent interconnect for ARM
 	  platforms.
+
+config VEXPRESS_CONFIG
+	bool "Versatile Express configuration bus"
+	default y if ARCH_VEXPRESS
+	depends on ARM || ARM64
+	depends on OF
+	select REGMAP
+	help
+	  Platform configuration infrastructure for the ARM Ltd.
+	  Versatile Express.
 endmenu
diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile
index 8947bdd0de8b..6a4ea7e4af1a 100644
--- a/drivers/bus/Makefile
+++ b/drivers/bus/Makefile
@@ -2,6 +2,7 @@
 # Makefile for the bus drivers.
 #
 
+obj-$(CONFIG_BRCMSTB_GISB_ARB)	+= brcmstb_gisb.o
 obj-$(CONFIG_IMX_WEIM)	+= imx-weim.o
 obj-$(CONFIG_MVEBU_MBUS) += mvebu-mbus.o
 obj-$(CONFIG_OMAP_OCP2SCP)	+= omap-ocp2scp.o
@@ -10,3 +11,5 @@ obj-$(CONFIG_OMAP_OCP2SCP)	+= omap-ocp2scp.o
 obj-$(CONFIG_OMAP_INTERCONNECT)	+= omap_l3_smx.o omap_l3_noc.o
 # CCI cache coherent interconnect for ARM platforms
 obj-$(CONFIG_ARM_CCI)		+= arm-cci.o
+
+obj-$(CONFIG_VEXPRESS_CONFIG)	+= vexpress-config.o
diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c
new file mode 100644
index 000000000000..6159b7752a64
--- /dev/null
+++ b/drivers/bus/brcmstb_gisb.c
@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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/init.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/sysfs.h>
+#include <linux/io.h>
+#include <linux/string.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/of.h>
+#include <linux/bitops.h>
+
+#include <asm/bug.h>
+#include <asm/signal.h>
+
+#define ARB_TIMER			0x008
+#define ARB_ERR_CAP_CLR			0x7e4
+#define  ARB_ERR_CAP_CLEAR		(1 << 0)
+#define ARB_ERR_CAP_HI_ADDR		0x7e8
+#define ARB_ERR_CAP_ADDR		0x7ec
+#define ARB_ERR_CAP_DATA		0x7f0
+#define ARB_ERR_CAP_STATUS		0x7f4
+#define  ARB_ERR_CAP_STATUS_TIMEOUT	(1 << 12)
+#define  ARB_ERR_CAP_STATUS_TEA		(1 << 11)
+#define  ARB_ERR_CAP_STATUS_BS_SHIFT	(1 << 2)
+#define  ARB_ERR_CAP_STATUS_BS_MASK	0x3c
+#define  ARB_ERR_CAP_STATUS_WRITE	(1 << 1)
+#define  ARB_ERR_CAP_STATUS_VALID	(1 << 0)
+#define ARB_ERR_CAP_MASTER		0x7f8
+
+struct brcmstb_gisb_arb_device {
+	void __iomem	*base;
+	struct mutex	lock;
+	struct list_head next;
+	u32 valid_mask;
+	const char *master_names[sizeof(u32) * BITS_PER_BYTE];
+};
+
+static LIST_HEAD(brcmstb_gisb_arb_device_list);
+
+static ssize_t gisb_arb_get_timeout(struct device *dev,
+				    struct device_attribute *attr,
+				    char *buf)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct brcmstb_gisb_arb_device *gdev = platform_get_drvdata(pdev);
+	u32 timeout;
+
+	mutex_lock(&gdev->lock);
+	timeout = ioread32(gdev->base + ARB_TIMER);
+	mutex_unlock(&gdev->lock);
+
+	return sprintf(buf, "%d", timeout);
+}
+
+static ssize_t gisb_arb_set_timeout(struct device *dev,
+				    struct device_attribute *attr,
+				    const char *buf, size_t count)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct brcmstb_gisb_arb_device *gdev = platform_get_drvdata(pdev);
+	int val, ret;
+
+	ret = kstrtoint(buf, 10, &val);
+	if (ret < 0)
+		return ret;
+
+	if (val == 0 || val >= 0xffffffff)
+		return -EINVAL;
+
+	mutex_lock(&gdev->lock);
+	iowrite32(val, gdev->base + ARB_TIMER);
+	mutex_unlock(&gdev->lock);
+
+	return count;
+}
+
+static const char *
+brcmstb_gisb_master_to_str(struct brcmstb_gisb_arb_device *gdev,
+						u32 masters)
+{
+	u32 mask = gdev->valid_mask & masters;
+
+	if (hweight_long(mask) != 1)
+		return NULL;
+
+	return gdev->master_names[ffs(mask) - 1];
+}
+
+static int brcmstb_gisb_arb_decode_addr(struct brcmstb_gisb_arb_device *gdev,
+					const char *reason)
+{
+	u32 cap_status;
+	unsigned long arb_addr;
+	u32 master;
+	const char *m_name;
+	char m_fmt[11];
+
+	cap_status = ioread32(gdev->base + ARB_ERR_CAP_STATUS);
+
+	/* Invalid captured address, bail out */
+	if (!(cap_status & ARB_ERR_CAP_STATUS_VALID))
+		return 1;
+
+	/* Read the address and master */
+	arb_addr = ioread32(gdev->base + ARB_ERR_CAP_ADDR) & 0xffffffff;
+#if (IS_ENABLED(CONFIG_PHYS_ADDR_T_64BIT))
+	arb_addr |= (u64)ioread32(gdev->base + ARB_ERR_CAP_HI_ADDR) << 32;
+#endif
+	master = ioread32(gdev->base + ARB_ERR_CAP_MASTER);
+
+	m_name = brcmstb_gisb_master_to_str(gdev, master);
+	if (!m_name) {
+		snprintf(m_fmt, sizeof(m_fmt), "0x%08x", master);
+		m_name = m_fmt;
+	}
+
+	pr_crit("%s: %s at 0x%lx [%c %s], core: %s\n",
+		__func__, reason, arb_addr,
+		cap_status & ARB_ERR_CAP_STATUS_WRITE ? 'W' : 'R',
+		cap_status & ARB_ERR_CAP_STATUS_TIMEOUT ? "timeout" : "",
+		m_name);
+
+	/* clear the GISB error */
+	iowrite32(ARB_ERR_CAP_CLEAR, gdev->base + ARB_ERR_CAP_CLR);
+
+	return 0;
+}
+
+static int brcmstb_bus_error_handler(unsigned long addr, unsigned int fsr,
+				     struct pt_regs *regs)
+{
+	int ret = 0;
+	struct brcmstb_gisb_arb_device *gdev;
+
+	/* iterate over each GISB arb registered handlers */
+	list_for_each_entry(gdev, &brcmstb_gisb_arb_device_list, next)
+		ret |= brcmstb_gisb_arb_decode_addr(gdev, "bus error");
+	/*
+	 * If it was an imprecise abort, then we need to correct the
+	 * return address to be _after_ the instruction.
+	*/
+	if (fsr & (1 << 10))
+		regs->ARM_pc += 4;
+
+	return ret;
+}
+
+void __init brcmstb_hook_fault_code(void)
+{
+	hook_fault_code(22, brcmstb_bus_error_handler, SIGBUS, 0,
+			"imprecise external abort");
+}
+
+static irqreturn_t brcmstb_gisb_timeout_handler(int irq, void *dev_id)
+{
+	brcmstb_gisb_arb_decode_addr(dev_id, "timeout");
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t brcmstb_gisb_tea_handler(int irq, void *dev_id)
+{
+	brcmstb_gisb_arb_decode_addr(dev_id, "target abort");
+
+	return IRQ_HANDLED;
+}
+
+static DEVICE_ATTR(gisb_arb_timeout, S_IWUSR | S_IRUGO,
+		gisb_arb_get_timeout, gisb_arb_set_timeout);
+
+static struct attribute *gisb_arb_sysfs_attrs[] = {
+	&dev_attr_gisb_arb_timeout.attr,
+	NULL,
+};
+
+static struct attribute_group gisb_arb_sysfs_attr_group = {
+	.attrs = gisb_arb_sysfs_attrs,
+};
+
+static int brcmstb_gisb_arb_probe(struct platform_device *pdev)
+{
+	struct device_node *dn = pdev->dev.of_node;
+	struct brcmstb_gisb_arb_device *gdev;
+	struct resource *r;
+	int err, timeout_irq, tea_irq;
+	unsigned int num_masters, j = 0;
+	int i, first, last;
+
+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	timeout_irq = platform_get_irq(pdev, 0);
+	tea_irq = platform_get_irq(pdev, 1);
+
+	gdev = devm_kzalloc(&pdev->dev, sizeof(*gdev), GFP_KERNEL);
+	if (!gdev)
+		return -ENOMEM;
+
+	mutex_init(&gdev->lock);
+	INIT_LIST_HEAD(&gdev->next);
+
+	gdev->base = devm_request_and_ioremap(&pdev->dev, r);
+	if (!gdev->base)
+		return -ENOMEM;
+
+	err = devm_request_irq(&pdev->dev, timeout_irq,
+				brcmstb_gisb_timeout_handler, 0, pdev->name,
+				gdev);
+	if (err < 0)
+		return err;
+
+	err = devm_request_irq(&pdev->dev, tea_irq,
+				brcmstb_gisb_tea_handler, 0, pdev->name,
+				gdev);
+	if (err < 0)
+		return err;
+
+	/* If we do not have a valid mask, assume all masters are enabled */
+	if (of_property_read_u32(dn, "brcm,gisb-arb-master-mask",
+				&gdev->valid_mask))
+		gdev->valid_mask = 0xffffffff;
+
+	/* Proceed with reading the litteral names if we agree on the
+	 * number of masters
+	 */
+	num_masters = of_property_count_strings(dn,
+			"brcm,gisb-arb-master-names");
+	if (hweight_long(gdev->valid_mask) == num_masters) {
+		first = ffs(gdev->valid_mask) - 1;
+		last = fls(gdev->valid_mask) - 1;
+
+		for (i = first; i < last; i++) {
+			if (!(gdev->valid_mask & BIT(i)))
+				continue;
+
+			of_property_read_string_index(dn,
+					"brcm,gisb-arb-master-names", j,
+					&gdev->master_names[i]);
+			j++;
+		}
+	}
+
+	err = sysfs_create_group(&pdev->dev.kobj, &gisb_arb_sysfs_attr_group);
+	if (err)
+		return err;
+
+	platform_set_drvdata(pdev, gdev);
+
+	list_add_tail(&gdev->next, &brcmstb_gisb_arb_device_list);
+
+	dev_info(&pdev->dev, "registered mem: %p, irqs: %d, %d\n",
+			gdev->base, timeout_irq, tea_irq);
+
+	return 0;
+}
+
+static const struct of_device_id brcmstb_gisb_arb_of_match[] = {
+	{ .compatible = "brcm,gisb-arb" },
+	{ },
+};
+
+static struct platform_driver brcmstb_gisb_arb_driver = {
+	.probe	= brcmstb_gisb_arb_probe,
+	.driver = {
+		.name	= "brcm-gisb-arb",
+		.owner	= THIS_MODULE,
+		.of_match_table = brcmstb_gisb_arb_of_match,
+	},
+};
+
+static int __init brcm_gisb_driver_init(void)
+{
+	return platform_driver_register(&brcmstb_gisb_arb_driver);
+}
+
+module_init(brcm_gisb_driver_init);
diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 00b73448b22e..26c3779d871d 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -704,7 +704,6 @@ static int __init mvebu_mbus_common_init(struct mvebu_mbus_state *mbus,
 					 phys_addr_t sdramwins_phys_base,
 					 size_t sdramwins_size)
 {
-	struct device_node *np;
 	int win;
 
 	mbus->mbuswins_base = ioremap(mbuswins_phys_base, mbuswins_size);
@@ -717,12 +716,6 @@ static int __init mvebu_mbus_common_init(struct mvebu_mbus_state *mbus,
 		return -ENOMEM;
 	}
 
-	np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric");
-	if (np) {
-		mbus->hw_io_coherency = 1;
-		of_node_put(np);
-	}
-
 	for (win = 0; win < mbus->soc->num_wins; win++)
 		mvebu_mbus_disable_window(mbus, win);
 
@@ -892,7 +885,7 @@ static void __init mvebu_mbus_get_pcie_resources(struct device_node *np,
 	}
 }
 
-int __init mvebu_mbus_dt_init(void)
+int __init mvebu_mbus_dt_init(bool is_coherent)
 {
 	struct resource mbuswins_res, sdramwins_res;
 	struct device_node *np, *controller;
@@ -930,6 +923,8 @@ int __init mvebu_mbus_dt_init(void)
 		return -EINVAL;
 	}
 
+	mbus_state.hw_io_coherency = is_coherent;
+
 	/* Get optional pcie-{mem,io}-aperture properties */
 	mvebu_mbus_get_pcie_resources(np, &mbus_state.pcie_mem_aperture,
 					  &mbus_state.pcie_io_aperture);
diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c
index feeecae623f6..531ae591783b 100644
--- a/drivers/bus/omap_l3_noc.c
+++ b/drivers/bus/omap_l3_noc.c
@@ -1,43 +1,45 @@
 /*
- * OMAP4XXX L3 Interconnect error handling driver
+ * OMAP L3 Interconnect error handling driver
  *
- * Copyright (C) 2011 Texas Corporation
+ * Copyright (C) 2011-2014 Texas Instruments Incorporated - http://www.ti.com/
  *	Santosh Shilimkar <santosh.shilimkar@ti.com>
  *	Sricharan <r.sricharan@ti.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.
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
  *
- * 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
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
  */
-#include <linux/module.h>
 #include <linux/init.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
 #include <linux/interrupt.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
 #include <linux/slab.h>
 
 #include "omap_l3_noc.h"
 
-/*
- * Interrupt Handler for L3 error detection.
- *	1) Identify the L3 clockdomain partition to which the error belongs to.
- *	2) Identify the slave where the error information is logged
- *	3) Print the logged information.
- *	4) Add dump stack to provide kernel trace.
+/**
+ * l3_handle_target() - Handle Target specific parse and reporting
+ * @l3:		pointer to l3 struct
+ * @base:	base address of clkdm
+ * @flag_mux:	flagmux corresponding to the event
+ * @err_src:	error source index of the slave (target)
  *
- * Two Types of errors :
+ * This does the second part of the error interrupt handling:
+ *	3) Parse in the slave information
+ *	4) Print the logged information.
+ *	5) Add dump stack to provide kernel trace.
+ *	6) Clear the source if known.
+ *
+ * This handles two types of errors:
  *	1) Custom errors in L3 :
  *		Target like DMM/FW/EMIF generates SRESP=ERR error
  *	2) Standard L3 error:
@@ -53,214 +55,264 @@
  *	can be trapped as well. But the trapping is implemented as part
  *	secure software and hence need not be implemented here.
  */
-static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
+static int l3_handle_target(struct omap_l3 *l3, void __iomem *base,
+			    struct l3_flagmux_data *flag_mux, int err_src)
 {
+	int k;
+	u32 std_err_main, clear, masterid;
+	u8 op_code, m_req_info;
+	void __iomem *l3_targ_base;
+	void __iomem *l3_targ_stderr, *l3_targ_slvofslsb, *l3_targ_mstaddr;
+	void __iomem *l3_targ_hdr, *l3_targ_info;
+	struct l3_target_data *l3_targ_inst;
+	struct l3_masters_data *master;
+	char *target_name, *master_name = "UN IDENTIFIED";
+	char *err_description;
+	char err_string[30] = { 0 };
+	char info_string[60] = { 0 };
+
+	/* We DONOT expect err_src to go out of bounds */
+	BUG_ON(err_src > MAX_CLKDM_TARGETS);
+
+	if (err_src < flag_mux->num_targ_data) {
+		l3_targ_inst = &flag_mux->l3_targ[err_src];
+		target_name = l3_targ_inst->name;
+		l3_targ_base = base + l3_targ_inst->offset;
+	} else {
+		target_name = L3_TARGET_NOT_SUPPORTED;
+	}
 
-	struct omap4_l3 *l3 = _l3;
-	int inttype, i, k;
+	if (target_name == L3_TARGET_NOT_SUPPORTED)
+		return -ENODEV;
+
+	/* Read the stderrlog_main_source from clk domain */
+	l3_targ_stderr = l3_targ_base + L3_TARG_STDERRLOG_MAIN;
+	l3_targ_slvofslsb = l3_targ_base + L3_TARG_STDERRLOG_SLVOFSLSB;
+
+	std_err_main = readl_relaxed(l3_targ_stderr);
+
+	switch (std_err_main & CUSTOM_ERROR) {
+	case STANDARD_ERROR:
+		err_description = "Standard";
+		snprintf(err_string, sizeof(err_string),
+			 ": At Address: 0x%08X ",
+			 readl_relaxed(l3_targ_slvofslsb));
+
+		l3_targ_mstaddr = l3_targ_base + L3_TARG_STDERRLOG_MSTADDR;
+		l3_targ_hdr = l3_targ_base + L3_TARG_STDERRLOG_HDR;
+		l3_targ_info = l3_targ_base + L3_TARG_STDERRLOG_INFO;
+		break;
+
+	case CUSTOM_ERROR:
+		err_description = "Custom";
+
+		l3_targ_mstaddr = l3_targ_base +
+				  L3_TARG_STDERRLOG_CINFO_MSTADDR;
+		l3_targ_hdr = l3_targ_base + L3_TARG_STDERRLOG_CINFO_OPCODE;
+		l3_targ_info = l3_targ_base + L3_TARG_STDERRLOG_CINFO_INFO;
+		break;
+
+	default:
+		/* Nothing to be handled here as of now */
+		return 0;
+	}
+
+	/* STDERRLOG_MSTADDR Stores the NTTP master address. */
+	masterid = (readl_relaxed(l3_targ_mstaddr) &
+		    l3->mst_addr_mask) >> __ffs(l3->mst_addr_mask);
+
+	for (k = 0, master = l3->l3_masters; k < l3->num_masters;
+	     k++, master++) {
+		if (masterid == master->id) {
+			master_name = master->name;
+			break;
+		}
+	}
+
+	op_code = readl_relaxed(l3_targ_hdr) & 0x7;
+
+	m_req_info = readl_relaxed(l3_targ_info) & 0xF;
+	snprintf(info_string, sizeof(info_string),
+		 ": %s in %s mode during %s access",
+		 (m_req_info & BIT(0)) ? "Opcode Fetch" : "Data Access",
+		 (m_req_info & BIT(1)) ? "Supervisor" : "User",
+		 (m_req_info & BIT(3)) ? "Debug" : "Functional");
+
+	WARN(true,
+	     "%s:L3 %s Error: MASTER %s TARGET %s (%s)%s%s\n",
+	     dev_name(l3->dev),
+	     err_description,
+	     master_name, target_name,
+	     l3_transaction_type[op_code],
+	     err_string, info_string);
+
+	/* clear the std error log*/
+	clear = std_err_main | CLEAR_STDERR_LOG;
+	writel_relaxed(clear, l3_targ_stderr);
+
+	return 0;
+}
+
+/**
+ * l3_interrupt_handler() - interrupt handler for l3 events
+ * @irq:	irq number
+ * @_l3:	pointer to l3 structure
+ *
+ * Interrupt Handler for L3 error detection.
+ *	1) Identify the L3 clockdomain partition to which the error belongs to.
+ *	2) Identify the slave where the error information is logged
+ *	... handle the slave event..
+ *	7) if the slave is unknown, mask out the slave.
+ */
+static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
+{
+	struct omap_l3 *l3 = _l3;
+	int inttype, i, ret;
 	int err_src = 0;
-	u32 std_err_main, err_reg, clear, masterid;
-	void __iomem *base, *l3_targ_base;
-	char *target_name, *master_name = "UN IDENTIFIED";
+	u32 err_reg, mask_val;
+	void __iomem *base, *mask_reg;
+	struct l3_flagmux_data *flag_mux;
 
 	/* Get the Type of interrupt */
 	inttype = irq == l3->app_irq ? L3_APPLICATION_ERROR : L3_DEBUG_ERROR;
 
-	for (i = 0; i < L3_MODULES; i++) {
+	for (i = 0; i < l3->num_modules; i++) {
 		/*
 		 * Read the regerr register of the clock domain
 		 * to determine the source
 		 */
 		base = l3->l3_base[i];
-		err_reg = __raw_readl(base + l3_flagmux[i] +
-					+ L3_FLAGMUX_REGERR0 + (inttype << 3));
+		flag_mux = l3->l3_flagmux[i];
+		err_reg = readl_relaxed(base + flag_mux->offset +
+					L3_FLAGMUX_REGERR0 + (inttype << 3));
+
+		err_reg &= ~(inttype ? flag_mux->mask_app_bits :
+				flag_mux->mask_dbg_bits);
 
 		/* Get the corresponding error and analyse */
 		if (err_reg) {
 			/* Identify the source from control status register */
 			err_src = __ffs(err_reg);
 
-			/* Read the stderrlog_main_source from clk domain */
-			l3_targ_base = base + *(l3_targ[i] + err_src);
-			std_err_main =  __raw_readl(l3_targ_base +
-					L3_TARG_STDERRLOG_MAIN);
-			masterid = __raw_readl(l3_targ_base +
-					L3_TARG_STDERRLOG_MSTADDR);
-
-			switch (std_err_main & CUSTOM_ERROR) {
-			case STANDARD_ERROR:
-				target_name =
-					l3_targ_inst_name[i][err_src];
-				WARN(true, "L3 standard error: TARGET:%s at address 0x%x\n",
-					target_name,
-					__raw_readl(l3_targ_base +
-						L3_TARG_STDERRLOG_SLVOFSLSB));
-				/* clear the std error log*/
-				clear = std_err_main | CLEAR_STDERR_LOG;
-				writel(clear, l3_targ_base +
-					L3_TARG_STDERRLOG_MAIN);
-				break;
-
-			case CUSTOM_ERROR:
-				target_name =
-					l3_targ_inst_name[i][err_src];
-				for (k = 0; k < NUM_OF_L3_MASTERS; k++) {
-					if (masterid == l3_masters[k].id)
-						master_name =
-							l3_masters[k].name;
-				}
-				WARN(true, "L3 custom error: MASTER:%s TARGET:%s\n",
-					master_name, target_name);
-				/* clear the std error log*/
-				clear = std_err_main | CLEAR_STDERR_LOG;
-				writel(clear, l3_targ_base +
-					L3_TARG_STDERRLOG_MAIN);
-				break;
-
-			default:
-				/* Nothing to be handled here as of now */
-				break;
+			ret = l3_handle_target(l3, base, flag_mux, err_src);
+
+			/*
+			 * Certain plaforms may have "undocumented" status
+			 * pending on boot. So dont generate a severe warning
+			 * here. Just mask it off to prevent the error from
+			 * reoccuring and locking up the system.
+			 */
+			if (ret) {
+				dev_err(l3->dev,
+					"L3 %s error: target %d mod:%d %s\n",
+					inttype ? "debug" : "application",
+					err_src, i, "(unclearable)");
+
+				mask_reg = base + flag_mux->offset +
+					   L3_FLAGMUX_MASK0 + (inttype << 3);
+				mask_val = readl_relaxed(mask_reg);
+				mask_val &= ~(1 << err_src);
+				writel_relaxed(mask_val, mask_reg);
+
+				/* Mark these bits as to be ignored */
+				if (inttype)
+					flag_mux->mask_app_bits |= 1 << err_src;
+				else
+					flag_mux->mask_dbg_bits |= 1 << err_src;
 			}
-		/* Error found so break the for loop */
-		break;
+
+			/* Error found so break the for loop */
+			break;
 		}
 	}
 	return IRQ_HANDLED;
 }
 
-static int omap4_l3_probe(struct platform_device *pdev)
+static const struct of_device_id l3_noc_match[] = {
+	{.compatible = "ti,omap4-l3-noc", .data = &omap_l3_data},
+	{.compatible = "ti,dra7-l3-noc", .data = &dra_l3_data},
+	{.compatible = "ti,am4372-l3-noc", .data = &am4372_l3_data},
+	{},
+};
+MODULE_DEVICE_TABLE(of, l3_noc_match);
+
+static int omap_l3_probe(struct platform_device *pdev)
 {
-	static struct omap4_l3 *l3;
-	struct resource	*res;
-	int ret;
+	const struct of_device_id *of_id;
+	static struct omap_l3 *l3;
+	int ret, i, res_idx;
+
+	of_id = of_match_device(l3_noc_match, &pdev->dev);
+	if (!of_id) {
+		dev_err(&pdev->dev, "OF data missing\n");
+		return -EINVAL;
+	}
 
-	l3 = kzalloc(sizeof(*l3), GFP_KERNEL);
+	l3 = devm_kzalloc(&pdev->dev, sizeof(*l3), GFP_KERNEL);
 	if (!l3)
 		return -ENOMEM;
 
+	memcpy(l3, of_id->data, sizeof(*l3));
+	l3->dev = &pdev->dev;
 	platform_set_drvdata(pdev, l3);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "couldn't find resource 0\n");
-		ret = -ENODEV;
-		goto err0;
-	}
-
-	l3->l3_base[0] = ioremap(res->start, resource_size(res));
-	if (!l3->l3_base[0]) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		ret = -ENOMEM;
-		goto err0;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	if (!res) {
-		dev_err(&pdev->dev, "couldn't find resource 1\n");
-		ret = -ENODEV;
-		goto err1;
-	}
-
-	l3->l3_base[1] = ioremap(res->start, resource_size(res));
-	if (!l3->l3_base[1]) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		ret = -ENOMEM;
-		goto err1;
-	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
-	if (!res) {
-		dev_err(&pdev->dev, "couldn't find resource 2\n");
-		ret = -ENODEV;
-		goto err2;
-	}
+	/* Get mem resources */
+	for (i = 0, res_idx = 0; i < l3->num_modules; i++) {
+		struct resource	*res;
 
-	l3->l3_base[2] = ioremap(res->start, resource_size(res));
-	if (!l3->l3_base[2]) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		ret = -ENOMEM;
-		goto err2;
+		if (l3->l3_base[i] == L3_BASE_IS_SUBMODULE) {
+			/* First entry cannot be submodule */
+			BUG_ON(i == 0);
+			l3->l3_base[i] = l3->l3_base[i - 1];
+			continue;
+		}
+		res = platform_get_resource(pdev, IORESOURCE_MEM, res_idx);
+		l3->l3_base[i] = devm_ioremap_resource(&pdev->dev, res);
+		if (IS_ERR(l3->l3_base[i])) {
+			dev_err(l3->dev, "ioremap %d failed\n", i);
+			return PTR_ERR(l3->l3_base[i]);
+		}
+		res_idx++;
 	}
 
 	/*
 	 * Setup interrupt Handlers
 	 */
 	l3->debug_irq = platform_get_irq(pdev, 0);
-	ret = request_irq(l3->debug_irq,
-			l3_interrupt_handler,
-			IRQF_DISABLED, "l3-dbg-irq", l3);
+	ret = devm_request_irq(l3->dev, l3->debug_irq, l3_interrupt_handler,
+			       IRQF_DISABLED, "l3-dbg-irq", l3);
 	if (ret) {
-		pr_crit("L3: request_irq failed to register for 0x%x\n",
-						l3->debug_irq);
-		goto err3;
+		dev_err(l3->dev, "request_irq failed for %d\n",
+			l3->debug_irq);
+		return ret;
 	}
 
 	l3->app_irq = platform_get_irq(pdev, 1);
-	ret = request_irq(l3->app_irq,
-			l3_interrupt_handler,
-			IRQF_DISABLED, "l3-app-irq", l3);
-	if (ret) {
-		pr_crit("L3: request_irq failed to register for 0x%x\n",
-						l3->app_irq);
-		goto err4;
-	}
+	ret = devm_request_irq(l3->dev, l3->app_irq, l3_interrupt_handler,
+			       IRQF_DISABLED, "l3-app-irq", l3);
+	if (ret)
+		dev_err(l3->dev, "request_irq failed for %d\n", l3->app_irq);
 
-	return 0;
-
-err4:
-	free_irq(l3->debug_irq, l3);
-err3:
-	iounmap(l3->l3_base[2]);
-err2:
-	iounmap(l3->l3_base[1]);
-err1:
-	iounmap(l3->l3_base[0]);
-err0:
-	kfree(l3);
 	return ret;
 }
 
-static int omap4_l3_remove(struct platform_device *pdev)
-{
-	struct omap4_l3 *l3 = platform_get_drvdata(pdev);
-
-	free_irq(l3->app_irq, l3);
-	free_irq(l3->debug_irq, l3);
-	iounmap(l3->l3_base[0]);
-	iounmap(l3->l3_base[1]);
-	iounmap(l3->l3_base[2]);
-	kfree(l3);
-
-	return 0;
-}
-
-#if defined(CONFIG_OF)
-static const struct of_device_id l3_noc_match[] = {
-	{.compatible = "ti,omap4-l3-noc", },
-	{},
-};
-MODULE_DEVICE_TABLE(of, l3_noc_match);
-#else
-#define l3_noc_match NULL
-#endif
-
-static struct platform_driver omap4_l3_driver = {
-	.probe		= omap4_l3_probe,
-	.remove		= omap4_l3_remove,
+static struct platform_driver omap_l3_driver = {
+	.probe		= omap_l3_probe,
 	.driver		= {
 		.name		= "omap_l3_noc",
 		.owner		= THIS_MODULE,
-		.of_match_table = l3_noc_match,
+		.of_match_table = of_match_ptr(l3_noc_match),
 	},
 };
 
-static int __init omap4_l3_init(void)
+static int __init omap_l3_init(void)
 {
-	return platform_driver_register(&omap4_l3_driver);
+	return platform_driver_register(&omap_l3_driver);
 }
-postcore_initcall_sync(omap4_l3_init);
+postcore_initcall_sync(omap_l3_init);
 
-static void __exit omap4_l3_exit(void)
+static void __exit omap_l3_exit(void)
 {
-	platform_driver_unregister(&omap4_l3_driver);
+	platform_driver_unregister(&omap_l3_driver);
 }
-module_exit(omap4_l3_exit);
+module_exit(omap_l3_exit);
diff --git a/drivers/bus/omap_l3_noc.h b/drivers/bus/omap_l3_noc.h
index a6ce34dc4814..551e01061434 100644
--- a/drivers/bus/omap_l3_noc.h
+++ b/drivers/bus/omap_l3_noc.h
@@ -1,29 +1,25 @@
 /*
- * OMAP4XXX L3 Interconnect  error handling driver header
+ * OMAP L3 Interconnect  error handling driver header
  *
- * Copyright (C) 2011 Texas Corporation
+ * Copyright (C) 2011-2014 Texas Instruments Incorporated - http://www.ti.com/
  *	Santosh Shilimkar <santosh.shilimkar@ti.com>
  *	sricharan <r.sricharan@ti.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.
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
  *
- * 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
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
  */
-#ifndef __ARCH_ARM_MACH_OMAP2_L3_INTERCONNECT_3XXX_H
-#define __ARCH_ARM_MACH_OMAP2_L3_INTERCONNECT_3XXX_H
+#ifndef __OMAP_L3_NOC_H
+#define __OMAP_L3_NOC_H
+
+#define MAX_L3_MODULES			3
+#define MAX_CLKDM_TARGETS		31
 
-#define L3_MODULES			3
 #define CLEAR_STDERR_LOG		(1 << 31)
 #define CUSTOM_ERROR			0x2
 #define STANDARD_ERROR			0x0
@@ -33,63 +29,165 @@
 
 /* L3 TARG register offsets */
 #define L3_TARG_STDERRLOG_MAIN		0x48
+#define L3_TARG_STDERRLOG_HDR		0x4c
+#define L3_TARG_STDERRLOG_MSTADDR	0x50
+#define L3_TARG_STDERRLOG_INFO		0x58
 #define L3_TARG_STDERRLOG_SLVOFSLSB	0x5c
-#define L3_TARG_STDERRLOG_MSTADDR	0x68
+#define L3_TARG_STDERRLOG_CINFO_INFO	0x64
+#define L3_TARG_STDERRLOG_CINFO_MSTADDR	0x68
+#define L3_TARG_STDERRLOG_CINFO_OPCODE	0x6c
 #define L3_FLAGMUX_REGERR0		0xc
+#define L3_FLAGMUX_MASK0		0x8
+
+#define L3_TARGET_NOT_SUPPORTED		NULL
+
+#define L3_BASE_IS_SUBMODULE		((void __iomem *)(1 << 0))
+
+static const char * const l3_transaction_type[] = {
+	/* 0 0 0 */ "Idle",
+	/* 0 0 1 */ "Write",
+	/* 0 1 0 */ "Read",
+	/* 0 1 1 */ "ReadEx",
+	/* 1 0 0 */ "Read Link",
+	/* 1 0 1 */ "Write Non-Posted",
+	/* 1 1 0 */ "Write Conditional",
+	/* 1 1 1 */ "Write Broadcast",
+};
 
-#define NUM_OF_L3_MASTERS	(sizeof(l3_masters)/sizeof(l3_masters[0]))
-
-static u32 l3_flagmux[L3_MODULES] = {
-	0x500,
-	0x1000,
-	0X0200
-};
-
-/* L3 Target standard Error register offsets */
-static u32 l3_targ_inst_clk1[] = {
-	0x100, /* DMM1 */
-	0x200, /* DMM2 */
-	0x300, /* ABE */
-	0x400, /* L4CFG */
-	0x600,  /* CLK2 PWR DISC */
-	0x0,	/* Host CLK1 */
-	0x900	/* L4 Wakeup */
-};
-
-static u32 l3_targ_inst_clk2[] = {
-	0x500, /* CORTEX M3 */
-	0x300, /* DSS */
-	0x100, /* GPMC */
-	0x400, /* ISS */
-	0x700, /* IVAHD */
-	0xD00, /* missing in TRM  corresponds to AES1*/
-	0x900, /* L4 PER0*/
-	0x200, /* OCMRAM */
-	0x100, /* missing in TRM corresponds to GPMC sERROR*/
-	0x600, /* SGX */
-	0x800, /* SL2 */
-	0x1600, /* C2C */
-	0x1100,	/* missing in TRM corresponds PWR DISC CLK1*/
-	0xF00, /* missing in TRM corrsponds to SHA1*/
-	0xE00, /* missing in TRM corresponds to AES2*/
-	0xC00, /* L4 PER3 */
-	0xA00, /* L4 PER1*/
-	0xB00, /* L4 PER2*/
-	0x0, /* HOST CLK2 */
-	0x1800, /* CAL */
-	0x1700 /* LLI */
-};
-
-static u32 l3_targ_inst_clk3[] = {
-	0x0100	/* EMUSS */,
-	0x0300, /* DEBUGSS_CT_TBR */
-	0x0 /* HOST CLK3 */
-};
-
-static struct l3_masters_data {
+/**
+ * struct l3_masters_data - L3 Master information
+ * @id:		ID of the L3 Master
+ * @name:	master name
+ */
+struct l3_masters_data {
 	u32 id;
-	char name[10];
-} l3_masters[] = {
+	char *name;
+};
+
+/**
+ * struct l3_target_data - L3 Target information
+ * @offset:	Offset from base for L3 Target
+ * @name:	Target name
+ *
+ * Target information is organized indexed by bit field definitions.
+ */
+struct l3_target_data {
+	u32 offset;
+	char *name;
+};
+
+/**
+ * struct l3_flagmux_data - Flag Mux information
+ * @offset:	offset from base for flagmux register
+ * @l3_targ:	array indexed by flagmux index (bit offset) pointing to the
+ *		target data. unsupported ones are marked with
+ *		L3_TARGET_NOT_SUPPORTED
+ * @num_targ_data: number of entries in target data
+ * @mask_app_bits: ignore these from raw application irq status
+ * @mask_dbg_bits: ignore these from raw debug irq status
+ */
+struct l3_flagmux_data {
+	u32 offset;
+	struct l3_target_data *l3_targ;
+	u8 num_targ_data;
+	u32 mask_app_bits;
+	u32 mask_dbg_bits;
+};
+
+
+/**
+ * struct omap_l3 - Description of data relevant for L3 bus.
+ * @dev:	device representing the bus (populated runtime)
+ * @l3_base:	base addresses of modules (populated runtime if 0)
+ *		if set to L3_BASE_IS_SUBMODULE, then uses previous
+ *		module index as the base address
+ * @l3_flag_mux: array containing flag mux data per module
+ *		 offset from corresponding module base indexed per
+ *		 module.
+ * @num_modules: number of clock domains / modules.
+ * @l3_masters:	array pointing to master data containing name and register
+ *		offset for the master.
+ * @num_master: number of masters
+ * @mst_addr_mask: Mask representing MSTADDR information of NTTP packet
+ * @debug_irq:	irq number of the debug interrupt (populated runtime)
+ * @app_irq:	irq number of the application interrupt (populated runtime)
+ */
+struct omap_l3 {
+	struct device *dev;
+
+	void __iomem *l3_base[MAX_L3_MODULES];
+	struct l3_flagmux_data **l3_flagmux;
+	int num_modules;
+
+	struct l3_masters_data *l3_masters;
+	int num_masters;
+	u32 mst_addr_mask;
+
+	int debug_irq;
+	int app_irq;
+};
+
+static struct l3_target_data omap_l3_target_data_clk1[] = {
+	{0x100,	"DMM1",},
+	{0x200,	"DMM2",},
+	{0x300,	"ABE",},
+	{0x400,	"L4CFG",},
+	{0x600,	"CLK2PWRDISC",},
+	{0x0,	"HOSTCLK1",},
+	{0x900,	"L4WAKEUP",},
+};
+
+static struct l3_flagmux_data omap_l3_flagmux_clk1 = {
+	.offset = 0x500,
+	.l3_targ = omap_l3_target_data_clk1,
+	.num_targ_data = ARRAY_SIZE(omap_l3_target_data_clk1),
+};
+
+
+static struct l3_target_data omap_l3_target_data_clk2[] = {
+	{0x500,	"CORTEXM3",},
+	{0x300,	"DSS",},
+	{0x100,	"GPMC",},
+	{0x400,	"ISS",},
+	{0x700,	"IVAHD",},
+	{0xD00,	"AES1",},
+	{0x900,	"L4PER0",},
+	{0x200,	"OCMRAM",},
+	{0x100,	"GPMCsERROR",},
+	{0x600,	"SGX",},
+	{0x800,	"SL2",},
+	{0x1600, "C2C",},
+	{0x1100, "PWRDISCCLK1",},
+	{0xF00,	"SHA1",},
+	{0xE00,	"AES2",},
+	{0xC00,	"L4PER3",},
+	{0xA00,	"L4PER1",},
+	{0xB00,	"L4PER2",},
+	{0x0,	"HOSTCLK2",},
+	{0x1800, "CAL",},
+	{0x1700, "LLI",},
+};
+
+static struct l3_flagmux_data omap_l3_flagmux_clk2 = {
+	.offset = 0x1000,
+	.l3_targ = omap_l3_target_data_clk2,
+	.num_targ_data = ARRAY_SIZE(omap_l3_target_data_clk2),
+};
+
+
+static struct l3_target_data omap_l3_target_data_clk3[] = {
+	{0x0100, "EMUSS",},
+	{0x0300, "DEBUG SOURCE",},
+	{0x0,	"HOST CLK3",},
+};
+
+static struct l3_flagmux_data omap_l3_flagmux_clk3 = {
+	.offset = 0x0200,
+	.l3_targ = omap_l3_target_data_clk3,
+	.num_targ_data = ARRAY_SIZE(omap_l3_target_data_clk3),
+};
+
+static struct l3_masters_data omap_l3_masters[] = {
 	{ 0x0 , "MPU"},
 	{ 0x10, "CS_ADP"},
 	{ 0x14, "xxx"},
@@ -117,60 +215,261 @@ static struct l3_masters_data {
 	{ 0xC8, "USBHOSTFS"}
 };
 
-static char *l3_targ_inst_name[L3_MODULES][21] = {
-	{
-		"DMM1",
-		"DMM2",
-		"ABE",
-		"L4CFG",
-		"CLK2 PWR DISC",
-		"HOST CLK1",
-		"L4 WAKEUP"
-	},
-	{
-		"CORTEX M3" ,
-		"DSS ",
-		"GPMC ",
-		"ISS ",
-		"IVAHD ",
-		"AES1",
-		"L4 PER0",
-		"OCMRAM ",
-		"GPMC sERROR",
-		"SGX ",
-		"SL2 ",
-		"C2C ",
-		"PWR DISC CLK1",
-		"SHA1",
-		"AES2",
-		"L4 PER3",
-		"L4 PER1",
-		"L4 PER2",
-		"HOST CLK2",
-		"CAL",
-		"LLI"
-	},
-	{
-		"EMUSS",
-		"DEBUG SOURCE",
-		"HOST CLK3"
-	},
-};
-
-static u32 *l3_targ[L3_MODULES] = {
-	l3_targ_inst_clk1,
-	l3_targ_inst_clk2,
-	l3_targ_inst_clk3,
-};
-
-struct omap4_l3 {
-	struct device *dev;
-	struct clk *ick;
+static struct l3_flagmux_data *omap_l3_flagmux[] = {
+	&omap_l3_flagmux_clk1,
+	&omap_l3_flagmux_clk2,
+	&omap_l3_flagmux_clk3,
+};
+
+static const struct omap_l3 omap_l3_data = {
+	.l3_flagmux = omap_l3_flagmux,
+	.num_modules = ARRAY_SIZE(omap_l3_flagmux),
+	.l3_masters = omap_l3_masters,
+	.num_masters = ARRAY_SIZE(omap_l3_masters),
+	/* The 6 MSBs of register field used to distinguish initiator */
+	.mst_addr_mask = 0xFC,
+};
 
-	/* memory base */
-	void __iomem *l3_base[L3_MODULES];
+/* DRA7 data */
+static struct l3_target_data dra_l3_target_data_clk1[] = {
+	{0x2a00, "AES1",},
+	{0x0200, "DMM_P1",},
+	{0x0600, "DSP2_SDMA",},
+	{0x0b00, "EVE2",},
+	{0x1300, "DMM_P2",},
+	{0x2c00, "AES2",},
+	{0x0300, "DSP1_SDMA",},
+	{0x0a00, "EVE1",},
+	{0x0c00, "EVE3",},
+	{0x0d00, "EVE4",},
+	{0x2900, "DSS",},
+	{0x0100, "GPMC",},
+	{0x3700, "PCIE1",},
+	{0x1600, "IVA_CONFIG",},
+	{0x1800, "IVA_SL2IF",},
+	{0x0500, "L4_CFG",},
+	{0x1d00, "L4_WKUP",},
+	{0x3800, "PCIE2",},
+	{0x3300, "SHA2_1",},
+	{0x1200, "GPU",},
+	{0x1000, "IPU1",},
+	{0x1100, "IPU2",},
+	{0x2000, "TPCC_EDMA",},
+	{0x2e00, "TPTC1_EDMA",},
+	{0x2b00, "TPTC2_EDMA",},
+	{0x0700, "VCP1",},
+	{0x2500, "L4_PER2_P3",},
+	{0x0e00, "L4_PER3_P3",},
+	{0x2200, "MMU1",},
+	{0x1400, "PRUSS1",},
+	{0x1500, "PRUSS2"},
+	{0x0800, "VCP1",},
+};
 
-	int debug_irq;
-	int app_irq;
+static struct l3_flagmux_data dra_l3_flagmux_clk1 = {
+	.offset = 0x803500,
+	.l3_targ = dra_l3_target_data_clk1,
+	.num_targ_data = ARRAY_SIZE(dra_l3_target_data_clk1),
+};
+
+static struct l3_target_data dra_l3_target_data_clk2[] = {
+	{0x0,	"HOST CLK1",},
+	{0x0,	"HOST CLK2",},
+	{0xdead, L3_TARGET_NOT_SUPPORTED,},
+	{0x3400, "SHA2_2",},
+	{0x0900, "BB2D",},
+	{0xdead, L3_TARGET_NOT_SUPPORTED,},
+	{0x2100, "L4_PER1_P3",},
+	{0x1c00, "L4_PER1_P1",},
+	{0x1f00, "L4_PER1_P2",},
+	{0x2300, "L4_PER2_P1",},
+	{0x2400, "L4_PER2_P2",},
+	{0x2600, "L4_PER3_P1",},
+	{0x2700, "L4_PER3_P2",},
+	{0x2f00, "MCASP1",},
+	{0x3000, "MCASP2",},
+	{0x3100, "MCASP3",},
+	{0x2800, "MMU2",},
+	{0x0f00, "OCMC_RAM1",},
+	{0x1700, "OCMC_RAM2",},
+	{0x1900, "OCMC_RAM3",},
+	{0x1e00, "OCMC_ROM",},
+	{0x3900, "QSPI",},
+};
+
+static struct l3_flagmux_data dra_l3_flagmux_clk2 = {
+	.offset = 0x803600,
+	.l3_targ = dra_l3_target_data_clk2,
+	.num_targ_data = ARRAY_SIZE(dra_l3_target_data_clk2),
+};
+
+static struct l3_target_data dra_l3_target_data_clk3[] = {
+	{0x0100, "L3_INSTR"},
+	{0x0300, "DEBUGSS_CT_TBR"},
+	{0x0,	 "HOST CLK3"},
+};
+
+static struct l3_flagmux_data dra_l3_flagmux_clk3 = {
+	.offset = 0x200,
+	.l3_targ = dra_l3_target_data_clk3,
+	.num_targ_data = ARRAY_SIZE(dra_l3_target_data_clk3),
+};
+
+static struct l3_masters_data dra_l3_masters[] = {
+	{ 0x0, "MPU" },
+	{ 0x4, "CS_DAP" },
+	{ 0x5, "IEEE1500_2_OCP" },
+	{ 0x8, "DSP1_MDMA" },
+	{ 0x9, "DSP1_CFG" },
+	{ 0xA, "DSP1_DMA" },
+	{ 0xB, "DSP2_MDMA" },
+	{ 0xC, "DSP2_CFG" },
+	{ 0xD, "DSP2_DMA" },
+	{ 0xE, "IVA" },
+	{ 0x10, "EVE1_P1" },
+	{ 0x11, "EVE2_P1" },
+	{ 0x12, "EVE3_P1" },
+	{ 0x13, "EVE4_P1" },
+	{ 0x14, "PRUSS1 PRU1" },
+	{ 0x15, "PRUSS1 PRU2" },
+	{ 0x16, "PRUSS2 PRU1" },
+	{ 0x17, "PRUSS2 PRU2" },
+	{ 0x18, "IPU1" },
+	{ 0x19, "IPU2" },
+	{ 0x1A, "SDMA" },
+	{ 0x1B, "CDMA" },
+	{ 0x1C, "TC1_EDMA" },
+	{ 0x1D, "TC2_EDMA" },
+	{ 0x20, "DSS" },
+	{ 0x21, "MMU1" },
+	{ 0x22, "PCIE1" },
+	{ 0x23, "MMU2" },
+	{ 0x24, "VIP1" },
+	{ 0x25, "VIP2" },
+	{ 0x26, "VIP3" },
+	{ 0x27, "VPE" },
+	{ 0x28, "GPU_P1" },
+	{ 0x29, "BB2D" },
+	{ 0x29, "GPU_P2" },
+	{ 0x2B, "GMAC_SW" },
+	{ 0x2C, "USB3" },
+	{ 0x2D, "USB2_SS" },
+	{ 0x2E, "USB2_ULPI_SS1" },
+	{ 0x2F, "USB2_ULPI_SS2" },
+	{ 0x30, "CSI2_1" },
+	{ 0x31, "CSI2_2" },
+	{ 0x33, "SATA" },
+	{ 0x34, "EVE1_P2" },
+	{ 0x35, "EVE2_P2" },
+	{ 0x36, "EVE3_P2" },
+	{ 0x37, "EVE4_P2" }
 };
-#endif
+
+static struct l3_flagmux_data *dra_l3_flagmux[] = {
+	&dra_l3_flagmux_clk1,
+	&dra_l3_flagmux_clk2,
+	&dra_l3_flagmux_clk3,
+};
+
+static const struct omap_l3 dra_l3_data = {
+	.l3_base = { [1] = L3_BASE_IS_SUBMODULE },
+	.l3_flagmux = dra_l3_flagmux,
+	.num_modules = ARRAY_SIZE(dra_l3_flagmux),
+	.l3_masters = dra_l3_masters,
+	.num_masters = ARRAY_SIZE(dra_l3_masters),
+	/* The 6 MSBs of register field used to distinguish initiator */
+	.mst_addr_mask = 0xFC,
+};
+
+/* AM4372 data */
+static struct l3_target_data am4372_l3_target_data_200f[] = {
+	{0xf00,  "EMIF",},
+	{0x1200, "DES",},
+	{0x400,  "OCMCRAM",},
+	{0x700,  "TPTC0",},
+	{0x800,  "TPTC1",},
+	{0x900,  "TPTC2"},
+	{0xb00,  "TPCC",},
+	{0xd00,  "DEBUGSS",},
+	{0xdead, L3_TARGET_NOT_SUPPORTED,},
+	{0x200,  "SHA",},
+	{0xc00,  "SGX530",},
+	{0x500,  "AES0",},
+	{0xa00,  "L4_FAST",},
+	{0x300,  "MPUSS_L2_RAM",},
+	{0x100,  "ICSS",},
+};
+
+static struct l3_flagmux_data am4372_l3_flagmux_200f = {
+	.offset = 0x1000,
+	.l3_targ = am4372_l3_target_data_200f,
+	.num_targ_data = ARRAY_SIZE(am4372_l3_target_data_200f),
+};
+
+static struct l3_target_data am4372_l3_target_data_100s[] = {
+	{0x100, "L4_PER_0",},
+	{0x200, "L4_PER_1",},
+	{0x300, "L4_PER_2",},
+	{0x400, "L4_PER_3",},
+	{0x800, "McASP0",},
+	{0x900, "McASP1",},
+	{0xC00, "MMCHS2",},
+	{0x700, "GPMC",},
+	{0xD00, "L4_FW",},
+	{0xdead, L3_TARGET_NOT_SUPPORTED,},
+	{0x500, "ADCTSC",},
+	{0xE00, "L4_WKUP",},
+	{0xA00, "MAG_CARD",},
+};
+
+static struct l3_flagmux_data am4372_l3_flagmux_100s = {
+	.offset = 0x600,
+	.l3_targ = am4372_l3_target_data_100s,
+	.num_targ_data = ARRAY_SIZE(am4372_l3_target_data_100s),
+};
+
+static struct l3_masters_data am4372_l3_masters[] = {
+	{ 0x0, "M1 (128-bit)"},
+	{ 0x1, "M2 (64-bit)"},
+	{ 0x4, "DAP"},
+	{ 0x5, "P1500"},
+	{ 0xC, "ICSS0"},
+	{ 0xD, "ICSS1"},
+	{ 0x14, "Wakeup Processor"},
+	{ 0x18, "TPTC0 Read"},
+	{ 0x19, "TPTC0 Write"},
+	{ 0x1A, "TPTC1 Read"},
+	{ 0x1B, "TPTC1 Write"},
+	{ 0x1C, "TPTC2 Read"},
+	{ 0x1D, "TPTC2 Write"},
+	{ 0x20, "SGX530"},
+	{ 0x21, "OCP WP Traffic Probe"},
+	{ 0x22, "OCP WP DMA Profiling"},
+	{ 0x23, "OCP WP Event Trace"},
+	{ 0x25, "DSS"},
+	{ 0x28, "Crypto DMA RD"},
+	{ 0x29, "Crypto DMA WR"},
+	{ 0x2C, "VPFE0"},
+	{ 0x2D, "VPFE1"},
+	{ 0x30, "GEMAC"},
+	{ 0x34, "USB0 RD"},
+	{ 0x35, "USB0 WR"},
+	{ 0x36, "USB1 RD"},
+	{ 0x37, "USB1 WR"},
+};
+
+static struct l3_flagmux_data *am4372_l3_flagmux[] = {
+	&am4372_l3_flagmux_200f,
+	&am4372_l3_flagmux_100s,
+};
+
+static const struct omap_l3 am4372_l3_data = {
+	.l3_flagmux = am4372_l3_flagmux,
+	.num_modules = ARRAY_SIZE(am4372_l3_flagmux),
+	.l3_masters = am4372_l3_masters,
+	.num_masters = ARRAY_SIZE(am4372_l3_masters),
+	/* All 6 bits of register field used to distinguish initiator */
+	.mst_addr_mask = 0x3F,
+};
+
+#endif	/* __OMAP_L3_NOC_H */
diff --git a/drivers/bus/vexpress-config.c b/drivers/bus/vexpress-config.c
new file mode 100644
index 000000000000..a64763b6b5fd
--- /dev/null
+++ b/drivers/bus/vexpress-config.c
@@ -0,0 +1,202 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * Copyright (C) 2014 ARM Limited
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/vexpress.h>
+
+
+struct vexpress_config_bridge {
+	struct vexpress_config_bridge_ops *ops;
+	void *context;
+};
+
+
+static DEFINE_MUTEX(vexpress_config_mutex);
+static struct class *vexpress_config_class;
+static u32 vexpress_config_site_master = VEXPRESS_SITE_MASTER;
+
+
+void vexpress_config_set_master(u32 site)
+{
+	vexpress_config_site_master = site;
+}
+
+u32 vexpress_config_get_master(void)
+{
+	return vexpress_config_site_master;
+}
+
+void vexpress_config_lock(void *arg)
+{
+	mutex_lock(&vexpress_config_mutex);
+}
+
+void vexpress_config_unlock(void *arg)
+{
+	mutex_unlock(&vexpress_config_mutex);
+}
+
+
+static void vexpress_config_find_prop(struct device_node *node,
+		const char *name, u32 *val)
+{
+	/* Default value */
+	*val = 0;
+
+	of_node_get(node);
+	while (node) {
+		if (of_property_read_u32(node, name, val) == 0) {
+			of_node_put(node);
+			return;
+		}
+		node = of_get_next_parent(node);
+	}
+}
+
+int vexpress_config_get_topo(struct device_node *node, u32 *site,
+		u32 *position, u32 *dcc)
+{
+	vexpress_config_find_prop(node, "arm,vexpress,site", site);
+	if (*site == VEXPRESS_SITE_MASTER)
+		*site = vexpress_config_site_master;
+	if (WARN_ON(vexpress_config_site_master == VEXPRESS_SITE_MASTER))
+		return -EINVAL;
+	vexpress_config_find_prop(node, "arm,vexpress,position", position);
+	vexpress_config_find_prop(node, "arm,vexpress,dcc", dcc);
+
+	return 0;
+}
+
+
+static void vexpress_config_devres_release(struct device *dev, void *res)
+{
+	struct vexpress_config_bridge *bridge = dev_get_drvdata(dev->parent);
+	struct regmap *regmap = res;
+
+	bridge->ops->regmap_exit(regmap, bridge->context);
+}
+
+struct regmap *devm_regmap_init_vexpress_config(struct device *dev)
+{
+	struct vexpress_config_bridge *bridge;
+	struct regmap *regmap;
+	struct regmap **res;
+
+	if (WARN_ON(dev->parent->class != vexpress_config_class))
+		return ERR_PTR(-ENODEV);
+
+	bridge = dev_get_drvdata(dev->parent);
+	if (WARN_ON(!bridge))
+		return ERR_PTR(-EINVAL);
+
+	res = devres_alloc(vexpress_config_devres_release, sizeof(*res),
+			GFP_KERNEL);
+	if (!res)
+		return ERR_PTR(-ENOMEM);
+
+	regmap = bridge->ops->regmap_init(dev, bridge->context);
+	if (IS_ERR(regmap)) {
+		devres_free(res);
+		return regmap;
+	}
+
+	*res = regmap;
+	devres_add(dev, res);
+
+	return regmap;
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init_vexpress_config);
+
+struct device *vexpress_config_bridge_register(struct device *parent,
+		struct vexpress_config_bridge_ops *ops, void *context)
+{
+	struct device *dev;
+	struct vexpress_config_bridge *bridge;
+
+	if (!vexpress_config_class) {
+		vexpress_config_class = class_create(THIS_MODULE,
+				"vexpress-config");
+		if (IS_ERR(vexpress_config_class))
+			return (void *)vexpress_config_class;
+	}
+
+	dev = device_create(vexpress_config_class, parent, 0,
+			NULL, "%s.bridge", dev_name(parent));
+
+	if (IS_ERR(dev))
+		return dev;
+
+	bridge = devm_kmalloc(dev, sizeof(*bridge), GFP_KERNEL);
+	if (!bridge) {
+		put_device(dev);
+		device_unregister(dev);
+		return ERR_PTR(-ENOMEM);
+	}
+	bridge->ops = ops;
+	bridge->context = context;
+
+	dev_set_drvdata(dev, bridge);
+
+	dev_dbg(parent, "Registered bridge '%s', parent node %p\n",
+			dev_name(dev), parent->of_node);
+
+	return dev;
+}
+
+
+static int vexpress_config_node_match(struct device *dev, const void *data)
+{
+	const struct device_node *node = data;
+
+	dev_dbg(dev, "Parent node %p, looking for %p\n",
+			dev->parent->of_node, node);
+
+	return dev->parent->of_node == node;
+}
+
+static int vexpress_config_populate(struct device_node *node)
+{
+	struct device_node *bridge;
+	struct device *parent;
+
+	bridge = of_parse_phandle(node, "arm,vexpress,config-bridge", 0);
+	if (!bridge)
+		return -EINVAL;
+
+	parent = class_find_device(vexpress_config_class, NULL, bridge,
+			vexpress_config_node_match);
+	if (WARN_ON(!parent))
+		return -ENODEV;
+
+	return of_platform_populate(node, NULL, NULL, parent);
+}
+
+static int __init vexpress_config_init(void)
+{
+	int err = 0;
+	struct device_node *node;
+
+	/* Need the config devices early, before the "normal" devices... */
+	for_each_compatible_node(node, NULL, "arm,vexpress,config-bus") {
+		err = vexpress_config_populate(node);
+		if (err)
+			break;
+	}
+
+	return err;
+}
+postcore_initcall(vexpress_config_init);
+