From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 3 Oct 2012 16:44:08 +0000 (-0700)
Subject: Merge tag 'dt-for-3.7' of git://sources.calxeda.com/kernel/linux
X-Git-Tag: firefly_0821_release~3680^2~1927
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a54dfb1a845c38a97686268d8c4086a63d9493aa;p=firefly-linux-kernel-4.4.55.git

Merge tag 'dt-for-3.7' of git://sources.calxeda.com/kernel/linux

Pull devicetree updates from Rob Herring:
 - Import of latest upstream device tree compiler (dtc)
 - New function of_get_child_by_name
 - Support for #size-cells of 0 and #addr-cells of >2
 - Couple of DT binding documentation updates

Fix up trivial conflicts due to of_get_child_by_name() having been added
next to the new of_get_next_available_child().

* tag 'dt-for-3.7' of git://sources.calxeda.com/kernel/linux:
  MAINTAINERS: add scripts/dtc under Devicetree maintainers
  dtc: import latest upstream dtc
  dt: Document general interrupt controller bindings
  dt/s3c64xx/spi: Use of_get_child_by_name to get a named child
  dt: introduce of_get_child_by_name to get child node by name
  of: i2c: add support for wakeup-source property
  of/address: Handle #address-cells > 2 specially
  DT: export of_irq_to_resource_table()
  devicetree: serial: Add documentation for imx serial
  devicetree: pwm: mxs-pwm.txt: Fix reg field annotation
  of: Allow busses with #size-cells=0
---

a54dfb1a845c38a97686268d8c4086a63d9493aa
diff --cc drivers/of/base.c
index d4a1c9a043e1,e2e813624df5..af3b22ac7627
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@@ -363,33 -363,29 +363,56 @@@ struct device_node *of_get_next_child(c
  }
  EXPORT_SYMBOL(of_get_next_child);
  
 +/**
 + *	of_get_next_available_child - Find the next available child node
 + *	@node:	parent node
 + *	@prev:	previous child of the parent node, or NULL to get first
 + *
 + *      This function is like of_get_next_child(), except that it
 + *      automatically skips any disabled nodes (i.e. status = "disabled").
 + */
 +struct device_node *of_get_next_available_child(const struct device_node *node,
 +	struct device_node *prev)
 +{
 +	struct device_node *next;
 +
 +	read_lock(&devtree_lock);
 +	next = prev ? prev->sibling : node->child;
 +	for (; next; next = next->sibling) {
 +		if (!of_device_is_available(next))
 +			continue;
 +		if (of_node_get(next))
 +			break;
 +	}
 +	of_node_put(prev);
 +	read_unlock(&devtree_lock);
 +	return next;
 +}
 +EXPORT_SYMBOL(of_get_next_available_child);
 +
+ /**
+  *	of_get_child_by_name - Find the child node by name for a given parent
+  *	@node:	parent node
+  *	@name:	child name to look for.
+  *
+  *      This function looks for child node for given matching name
+  *
+  *	Returns a node pointer if found, with refcount incremented, use
+  *	of_node_put() on it when done.
+  *	Returns NULL if node is not found.
+  */
+ struct device_node *of_get_child_by_name(const struct device_node *node,
+ 				const char *name)
+ {
+ 	struct device_node *child;
+ 
+ 	for_each_child_of_node(node, child)
+ 		if (child->name && (of_node_cmp(child->name, name) == 0))
+ 			break;
+ 	return child;
+ }
+ EXPORT_SYMBOL(of_get_child_by_name);
+ 
  /**
   *	of_find_node_by_path - Find a node matching a full OF path
   *	@path:	The full path to match
diff --cc include/linux/of.h
index 1b1163225f3b,fabb524d3d75..f594c528842f
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@@ -190,9 -190,8 +190,11 @@@ extern struct device_node *of_get_paren
  extern struct device_node *of_get_next_parent(struct device_node *node);
  extern struct device_node *of_get_next_child(const struct device_node *node,
  					     struct device_node *prev);
 +extern struct device_node *of_get_next_available_child(
 +	const struct device_node *node, struct device_node *prev);
 +
+ extern struct device_node *of_get_child_by_name(const struct device_node *node,
+ 					const char *name);
  #define for_each_child_of_node(parent, child) \
  	for (child = of_get_next_child(parent, NULL); child != NULL; \
  	     child = of_get_next_child(parent, child))