ipq806x: Add support for linux-4.4

1)Changes

- Rebased the patches for linux-4.4.7
- Added patch to fix spi nor fifo and dma support
- Added patch to configure watchdog barktime

2)Testing

Tested on IPQ AP148 Board:
 a. NOR boot and NAND boot
 b. ethernet network and ath10k wifi
 c. ubi sysupgrade

UnTested
 dwc3 usb has not been validated on IPQ board(AP148)

3)Known Issues:
 Once we flash ubi image on AP148, and if we reset the board, uboot on
 first boot creates PEB and LEB for dynamic sized partitions, which is incorrect
 and not what linux expects which causes errors when trying to mount rootfs.
 In order to test this, we can use the below steps:
  a. Flash the ubi image on board and don't reset the board
  b. load the kernel fit image in RAM and boot from there.

Signed-off-by: Ram Chandra Jangir <rjangi@codeaurora.org>

1 files changed, 0 insertions, 167 deletions

diff --git a/target/linux/ipq806x/patches-3.18/030-hwspinlock-core-add-device-tree-support.patch b/target/linux/ipq806x/patches-3.18/030-hwspinlock-core-add-device-tree-support.patch
deleted file mode 100644
index 04f35b7ec7..0000000000
--- a/target/linux/ipq806x/patches-3.18/030-hwspinlock-core-add-device-tree-support.patch
+++ /dev/null
@@ -1,167 +0,0 @@
-From fb7737e949e31d8a71acee6bbb670f32dbd2a2c0 Mon Sep 17 00:00:00 2001
-From: Suman Anna <s-anna@ti.com>
-Date: Wed, 4 Mar 2015 20:01:14 -0600
-Subject: [PATCH] hwspinlock/core: add device tree support
-
-This patch adds a new OF-friendly API of_hwspin_lock_get_id()
-for hwspinlock clients to use/request locks from a hwspinlock
-device instantiated through a device-tree blob. This new API
-can be used by hwspinlock clients to get the id for a specific
-lock using the phandle + args specifier, so that it can be
-requested using the available hwspin_lock_request_specific()
-API.
-
-Signed-off-by: Suman Anna <s-anna@ti.com>
-Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
-[small comment clarification]
-Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
----
- Documentation/hwspinlock.txt         | 10 +++++
- drivers/hwspinlock/hwspinlock_core.c | 79 ++++++++++++++++++++++++++++++++++++
- include/linux/hwspinlock.h           |  7 ++++
- 3 files changed, 96 insertions(+)
-
---- a/Documentation/hwspinlock.txt
-+++ b/Documentation/hwspinlock.txt
-@@ -48,6 +48,16 @@ independent, drivers.
-      ids for predefined purposes.
-      Should be called from a process context (might sleep).
- 
-+  int of_hwspin_lock_get_id(struct device_node *np, int index);
-+   - retrieve the global lock id for an OF phandle-based specific lock.
-+     This function provides a means for DT users of a hwspinlock module
-+     to get the global lock id of a specific hwspinlock, so that it can
-+     be requested using the normal hwspin_lock_request_specific() API.
-+     The function returns a lock id number on success, -EPROBE_DEFER if
-+     the hwspinlock device is not yet registered with the core, or other
-+     error values.
-+     Should be called from a process context (might sleep).
-+
-   int hwspin_lock_free(struct hwspinlock *hwlock);
-    - free a previously-assigned hwspinlock; returns 0 on success, or an
-      appropriate error code on failure (e.g. -EINVAL if the hwspinlock
---- a/drivers/hwspinlock/hwspinlock_core.c
-+++ b/drivers/hwspinlock/hwspinlock_core.c
-@@ -27,6 +27,7 @@
- #include <linux/hwspinlock.h>
- #include <linux/pm_runtime.h>
- #include <linux/mutex.h>
-+#include <linux/of.h>
- 
- #include "hwspinlock_internal.h"
- 
-@@ -257,6 +258,84 @@ void __hwspin_unlock(struct hwspinlock *
- }
- EXPORT_SYMBOL_GPL(__hwspin_unlock);
- 
-+/**
-+ * of_hwspin_lock_simple_xlate - translate hwlock_spec to return a lock id
-+ * @bank: the hwspinlock device bank
-+ * @hwlock_spec: hwlock specifier as found in the device tree
-+ *
-+ * This is a simple translation function, suitable for hwspinlock platform
-+ * drivers that only has a lock specifier length of 1.
-+ *
-+ * Returns a relative index of the lock within a specified bank on success,
-+ * or -EINVAL on invalid specifier cell count.
-+ */
-+static inline int
-+of_hwspin_lock_simple_xlate(const struct of_phandle_args *hwlock_spec)
-+{
-+	if (WARN_ON(hwlock_spec->args_count != 1))
-+		return -EINVAL;
-+
-+	return hwlock_spec->args[0];
-+}
-+
-+/**
-+ * of_hwspin_lock_get_id() - get lock id for an OF phandle-based specific lock
-+ * @np: device node from which to request the specific hwlock
-+ * @index: index of the hwlock in the list of values
-+ *
-+ * This function provides a means for DT users of the hwspinlock module to
-+ * get the global lock id of a specific hwspinlock using the phandle of the
-+ * hwspinlock device, so that it can be requested using the normal
-+ * hwspin_lock_request_specific() API.
-+ *
-+ * Returns the global lock id number on success, -EPROBE_DEFER if the hwspinlock
-+ * device is not yet registered, -EINVAL on invalid args specifier value or an
-+ * appropriate error as returned from the OF parsing of the DT client node.
-+ */
-+int of_hwspin_lock_get_id(struct device_node *np, int index)
-+{
-+	struct of_phandle_args args;
-+	struct hwspinlock *hwlock;
-+	struct radix_tree_iter iter;
-+	void **slot;
-+	int id;
-+	int ret;
-+
-+	ret = of_parse_phandle_with_args(np, "hwlocks", "#hwlock-cells", index,
-+					 &args);
-+	if (ret)
-+		return ret;
-+
-+	/* Find the hwspinlock device: we need its base_id */
-+	ret = -EPROBE_DEFER;
-+	rcu_read_lock();
-+	radix_tree_for_each_slot(slot, &hwspinlock_tree, &iter, 0) {
-+		hwlock = radix_tree_deref_slot(slot);
-+		if (unlikely(!hwlock))
-+			continue;
-+
-+		if (hwlock->bank->dev->of_node == args.np) {
-+			ret = 0;
-+			break;
-+		}
-+	}
-+	rcu_read_unlock();
-+	if (ret < 0)
-+		goto out;
-+
-+	id = of_hwspin_lock_simple_xlate(&args);
-+	if (id < 0 || id >= hwlock->bank->num_locks) {
-+		ret = -EINVAL;
-+		goto out;
-+	}
-+	id += hwlock->bank->base_id;
-+
-+out:
-+	of_node_put(args.np);
-+	return ret ? ret : id;
-+}
-+EXPORT_SYMBOL_GPL(of_hwspin_lock_get_id);
-+
- static int hwspin_lock_register_single(struct hwspinlock *hwlock, int id)
- {
- 	struct hwspinlock *tmp;
---- a/include/linux/hwspinlock.h
-+++ b/include/linux/hwspinlock.h
-@@ -26,6 +26,7 @@
- #define HWLOCK_IRQ	0x02	/* Disable interrupts, don't save state */
- 
- struct device;
-+struct device_node;
- struct hwspinlock;
- struct hwspinlock_device;
- struct hwspinlock_ops;
-@@ -66,6 +67,7 @@ int hwspin_lock_unregister(struct hwspin
- struct hwspinlock *hwspin_lock_request(void);
- struct hwspinlock *hwspin_lock_request_specific(unsigned int id);
- int hwspin_lock_free(struct hwspinlock *hwlock);
-+int of_hwspin_lock_get_id(struct device_node *np, int index);
- int hwspin_lock_get_id(struct hwspinlock *hwlock);
- int __hwspin_lock_timeout(struct hwspinlock *, unsigned int, int,
- 							unsigned long *);
-@@ -120,6 +122,11 @@ void __hwspin_unlock(struct hwspinlock *
- {
- }
- 
-+static inline int of_hwspin_lock_get_id(struct device_node *np, int index)
-+{
-+	return 0;
-+}
-+
- static inline int hwspin_lock_get_id(struct hwspinlock *hwlock)
- {
- 	return 0;