Merge tag 'devicetree-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull Devicetree updates from Rob Herring:
 "A bit bigger than normal as I've been busy this cycle.

  There's a few things with dependencies and a few things subsystem
  maintainers didn't pick up, so I'm taking them thru my tree.

  The fixes from Johan didn't get into linux-next, but they've been
  waiting for some time now and they are what's left of what subsystem
  maintainers didn't pick up.

  Summary:

   - Sync dtc with upstream version v1.4.7-14-gc86da84d30e4

   - Work to get rid of direct accesses to struct device_node name and
     type pointers in preparation for removing them. New helpers for
     parsing DT cpu nodes and conversions to use the helpers. printk
     conversions to %pOFn for printing DT node names. Most went thru
     subystem trees, so this is the remainder.

   - Fixes to DT child node lookups to actually be restricted to child
     nodes instead of treewide.

   - Refactoring of dtb targets out of arch code. This makes the support
     more uniform and enables building all dtbs on c6x, microblaze, and
     powerpc.

   - Various DT binding updates for Renesas r8a7744 SoC

   - Vendor prefixes for Facebook, OLPC

   - Restructuring of some ARM binding docs moving some peripheral
     bindings out of board/SoC binding files

   - New "secure-chosen" binding for secure world settings on ARM

   - Dual licensing of 2 DT IRQ binding headers"

* tag 'devicetree-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (78 commits)
  ARM: dt: relicense two DT binding IRQ headers
  power: supply: twl4030-charger: fix OF sibling-node lookup
  NFC: nfcmrvl_uart: fix OF child-node lookup
  net: stmmac: dwmac-sun8i: fix OF child-node lookup
  net: bcmgenet: fix OF child-node lookup
  drm/msm: fix OF child-node lookup
  drm/mediatek: fix OF sibling-node lookup
  of: Add missing exports of node name compare functions
  dt-bindings: Add OLPC vendor prefix
  dt-bindings: misc: bk4: Add device tree binding for Liebherr's BK4 SPI bus
  dt-bindings: thermal: samsung: Add SPDX license identifier
  dt-bindings: clock: samsung: Add SPDX license identifiers
  dt-bindings: timer: ostm: Add R7S9210 support
  dt-bindings: phy: rcar-gen2: Add r8a7744 support
  dt-bindings: can: rcar_can: Add r8a7744 support
  dt-bindings: timer: renesas, cmt: Document r8a7744 CMT support
  dt-bindings: watchdog: renesas-wdt: Document r8a7744 support
  dt-bindings: thermal: rcar: Add device tree support for r8a7744
  Documentation: dt: Add binding for /secure-chosen/stdout-path
  dt-bindings: arm: zte: Move sysctrl bindings to their own doc
  ...

10 files changed, 94 insertions, 46 deletions

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 90bf7d9fa17b..13ebb16be64e 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -67,6 +67,7 @@ bool of_node_name_eq(const struct device_node *np, const char *name)
 
 	return (strlen(name) == len) && (strncmp(node_name, name, len) == 0);
 }
+EXPORT_SYMBOL(of_node_name_eq);
 
 bool of_node_name_prefix(const struct device_node *np, const char *prefix)
 {
@@ -75,6 +76,7 @@ bool of_node_name_prefix(const struct device_node *np, const char *prefix)
 
 	return strncmp(kbasename(np->full_name), prefix, strlen(prefix)) == 0;
 }
+EXPORT_SYMBOL(of_node_name_prefix);
 
 int of_n_addr_cells(struct device_node *np)
 {
@@ -330,6 +332,8 @@ static bool __of_find_n_match_cpu_property(struct device_node *cpun,
 
 	ac = of_n_addr_cells(cpun);
 	cell = of_get_property(cpun, prop_name, &prop_len);
+	if (!cell && !ac && arch_match_cpu_phys_id(cpu, 0))
+		return true;
 	if (!cell || !ac)
 		return false;
 	prop_len /= sizeof(*cell) * ac;
@@ -390,7 +394,7 @@ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
 {
 	struct device_node *cpun;
 
-	for_each_node_by_type(cpun, "cpu") {
+	for_each_of_cpu_node(cpun) {
 		if (arch_find_n_match_cpu_physical_id(cpun, cpu, thread))
 			return cpun;
 	}
@@ -745,6 +749,45 @@ struct device_node *of_get_next_available_child(const struct device_node *node,
 EXPORT_SYMBOL(of_get_next_available_child);
 
 /**
+ *	of_get_next_cpu_node - Iterate on cpu nodes
+ *	@prev:	previous child of the /cpus node, or NULL to get first
+ *
+ *	Returns a cpu node pointer with refcount incremented, use of_node_put()
+ *	on it when done. Returns NULL when prev is the last child. Decrements
+ *	the refcount of prev.
+ */
+struct device_node *of_get_next_cpu_node(struct device_node *prev)
+{
+	struct device_node *next = NULL;
+	unsigned long flags;
+	struct device_node *node;
+
+	if (!prev)
+		node = of_find_node_by_path("/cpus");
+
+	raw_spin_lock_irqsave(&devtree_lock, flags);
+	if (prev)
+		next = prev->sibling;
+	else if (node) {
+		next = node->child;
+		of_node_put(node);
+	}
+	for (; next; next = next->sibling) {
+		if (!(of_node_name_eq(next, "cpu") ||
+		      (next->type && !of_node_cmp(next->type, "cpu"))))
+			continue;
+		if (!__of_device_is_available(next))
+			continue;
+		if (of_node_get(next))
+			break;
+	}
+	of_node_put(prev);
+	raw_spin_unlock_irqrestore(&devtree_lock, flags);
+	return next;
+}
+EXPORT_SYMBOL(of_get_next_cpu_node);
+
+/**
  * of_get_compatible_child - Find compatible child node
  * @parent:	parent node
  * @compatible:	compatible string
@@ -2013,7 +2056,7 @@ struct device_node *of_find_next_cache_node(const struct device_node *np)
 	/* OF on pmac has nodes instead of properties named "l2-cache"
 	 * beneath CPU nodes.
 	 */
-	if (!strcmp(np->type, "cpu"))
+	if (IS_ENABLED(CONFIG_PPC_PMAC) && !strcmp(np->type, "cpu"))
 		for_each_child_of_node(np, child)
 			if (!strcmp(child->type, "cache"))
 				return child;
diff --git a/drivers/of/device.c b/drivers/of/device.c
index c7fa5a9697c9..0f27fad9fe94 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -207,7 +207,8 @@ static ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len
 		return -ENODEV;
 
 	/* Name & Type */
-	csize = snprintf(str, len, "of:N%sT%s", dev->of_node->name,
+	/* %p eats all alphanum characters, so %c must be used here */
+	csize = snprintf(str, len, "of:N%pOFn%c%s", dev->of_node, 'T',
 			 dev->of_node->type);
 	tsize = csize;
 	len -= csize;
@@ -286,7 +287,7 @@ void of_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 	if ((!dev) || (!dev->of_node))
 		return;
 
-	add_uevent_var(env, "OF_NAME=%s", dev->of_node->name);
+	add_uevent_var(env, "OF_NAME=%pOFn", dev->of_node);
 	add_uevent_var(env, "OF_FULLNAME=%pOF", dev->of_node);
 	if (dev->of_node->type && strcmp("<NULL>", dev->of_node->type) != 0)
 		add_uevent_var(env, "OF_TYPE=%s", dev->of_node->type);
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index e92391d6d1bd..5ad1342f5682 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -97,8 +97,8 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio,
 		return rc;
 	}
 
-	dev_dbg(&mdio->dev, "registered phy %s at address %i\n",
-		child->name, addr);
+	dev_dbg(&mdio->dev, "registered phy %pOFn at address %i\n",
+		child, addr);
 	return 0;
 }
 
@@ -127,8 +127,8 @@ static int of_mdiobus_register_device(struct mii_bus *mdio,
 		return rc;
 	}
 
-	dev_dbg(&mdio->dev, "registered mdio device %s at address %i\n",
-		child->name, addr);
+	dev_dbg(&mdio->dev, "registered mdio device %pOFn at address %i\n",
+		child, addr);
 	return 0;
 }
 
@@ -263,8 +263,8 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
 				continue;
 
 			/* be noisy to encourage people to set reg property */
-			dev_info(&mdio->dev, "scan phy %s at address %i\n",
-				 child->name, addr);
+			dev_info(&mdio->dev, "scan phy %pOFn at address %i\n",
+				 child, addr);
 
 			if (of_mdiobus_child_is_phy(child)) {
 				rc = of_mdiobus_register_phy(mdio, child, addr);
diff --git a/drivers/of/of_numa.c b/drivers/of/of_numa.c
index 27d9b4bba535..35c64a4295e0 100644
--- a/drivers/of/of_numa.c
+++ b/drivers/of/of_numa.c
@@ -24,18 +24,9 @@ static void __init of_numa_parse_cpu_nodes(void)
 {
 	u32 nid;
 	int r;
-	struct device_node *cpus;
-	struct device_node *np = NULL;
-
-	cpus = of_find_node_by_path("/cpus");
-	if (!cpus)
-		return;
-
-	for_each_child_of_node(cpus, np) {
-		/* Skip things that are not CPUs */
-		if (of_node_cmp(np->type, "cpu") != 0)
-			continue;
+	struct device_node *np;
 
+	for_each_of_cpu_node(np) {
 		r = of_property_read_u32(np, "numa-node-id", &nid);
 		if (r)
 			continue;
@@ -46,8 +37,6 @@ static void __init of_numa_parse_cpu_nodes(void)
 		else
 			node_set(nid, numa_nodes_parsed);
 	}
-
-	of_node_put(cpus);
 }
 
 static int __init of_numa_parse_memory_nodes(void)
@@ -163,8 +152,8 @@ int of_node_to_nid(struct device_node *device)
 		np = of_get_next_parent(np);
 	}
 	if (np && r)
-		pr_warn("Invalid \"numa-node-id\" property in node %s\n",
-			np->name);
+		pr_warn("Invalid \"numa-node-id\" property in node %pOFn\n",
+			np);
 	of_node_put(np);
 
 	/*
diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
index 216175d11d3d..5d1567025358 100644
--- a/drivers/of/of_private.h
+++ b/drivers/of/of_private.h
@@ -27,6 +27,14 @@ struct alias_prop {
 	char stem[0];
 };
 
+#if defined(CONFIG_SPARC)
+#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 2
+#else
+#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
+#endif
+
+#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
+
 extern struct mutex of_mutex;
 extern struct list_head aliases_lookup;
 extern struct kset *of_kset;
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index eda57ef12fd0..42b1f73ac5f6 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -425,8 +425,8 @@ static int build_changeset_next_level(struct overlay_changeset *ovcs,
 	for_each_child_of_node(overlay_node, child) {
 		ret = add_changeset_node(ovcs, target_node, child);
 		if (ret) {
-			pr_debug("Failed to apply node @%pOF/%s, err=%d\n",
-				 target_node, child->name, ret);
+			pr_debug("Failed to apply node @%pOF/%pOFn, err=%d\n",
+				 target_node, child, ret);
 			of_node_put(child);
 			return ret;
 		}
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 6c59673933e9..04ad312fd85b 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -91,8 +91,8 @@ static void of_device_make_bus_id(struct device *dev)
 		 */
 		reg = of_get_property(node, "reg", NULL);
 		if (reg && (addr = of_translate_address(node, reg)) != OF_BAD_ADDR) {
-			dev_set_name(dev, dev_name(dev) ? "%llx.%s:%s" : "%llx.%s",
-				     (unsigned long long)addr, node->name,
+			dev_set_name(dev, dev_name(dev) ? "%llx.%pOFn:%s" : "%llx.%pOFn",
+				     (unsigned long long)addr, node,
 				     dev_name(dev));
 			return;
 		}
@@ -142,8 +142,8 @@ struct platform_device *of_device_alloc(struct device_node *np,
 			WARN_ON(rc);
 		}
 		if (of_irq_to_resource_table(np, res, num_irq) != num_irq)
-			pr_debug("not all legacy IRQ resources mapped for %s\n",
-				 np->name);
+			pr_debug("not all legacy IRQ resources mapped for %pOFn\n",
+				 np);
 	}
 
 	dev->dev.of_node = of_node_get(np);
diff --git a/drivers/of/unittest-data/overlay_15.dts b/drivers/of/unittest-data/overlay_15.dts
index b98f2514df4b..5728490474f6 100644
--- a/drivers/of/unittest-data/overlay_15.dts
+++ b/drivers/of/unittest-data/overlay_15.dts
@@ -20,8 +20,8 @@
 			#size-cells = <0>;
 			reg = <0>;
 
-			test-mux-dev {
-				reg = <32>;
+			test-mux-dev@20 {
+				reg = <0x20>;
 				compatible = "unittest-i2c-dev";
 				status = "okay";
 			};
diff --git a/drivers/of/unittest-data/tests-overlay.dtsi b/drivers/of/unittest-data/tests-overlay.dtsi
index 25cf397b8f6b..4ea024d908ee 100644
--- a/drivers/of/unittest-data/tests-overlay.dtsi
+++ b/drivers/of/unittest-data/tests-overlay.dtsi
@@ -103,8 +103,8 @@
 							#size-cells = <0>;
 							reg = <0>;
 
-							test-mux-dev {
-								reg = <32>;
+							test-mux-dev@20 {
+								reg = <0x20>;
 								compatible = "unittest-i2c-dev";
 								status = "okay";
 							};
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 41b49716ac75..a3a6866765f2 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -212,8 +212,8 @@ static int __init of_unittest_check_node_linkage(struct device_node *np)
 
 	for_each_child_of_node(np, child) {
 		if (child->parent != np) {
-			pr_err("Child node %s links to wrong parent %s\n",
-				 child->name, np->name);
+			pr_err("Child node %pOFn links to wrong parent %pOFn\n",
+				 child, np);
 			rc = -EINVAL;
 			goto put_child;
 		}
@@ -299,6 +299,10 @@ static void __init of_unittest_printf(void)
 
 	of_unittest_printf_one(np, "%pOF",  full_name);
 	of_unittest_printf_one(np, "%pOFf", full_name);
+	of_unittest_printf_one(np, "%pOFn", "dev");
+	of_unittest_printf_one(np, "%2pOFn", "dev");
+	of_unittest_printf_one(np, "%5pOFn", "  dev");
+	of_unittest_printf_one(np, "%pOFnc", "dev:test-sub-device");
 	of_unittest_printf_one(np, "%pOFp", phandle_str);
 	of_unittest_printf_one(np, "%pOFP", "dev@100");
 	of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
@@ -1046,16 +1050,16 @@ static void __init of_unittest_platform_populate(void)
 	for_each_child_of_node(np, child) {
 		for_each_child_of_node(child, grandchild)
 			unittest(of_find_device_by_node(grandchild),
-				 "Could not create device for node '%s'\n",
-				 grandchild->name);
+				 "Could not create device for node '%pOFn'\n",
+				 grandchild);
 	}
 
 	of_platform_depopulate(&test_bus->dev);
 	for_each_child_of_node(np, child) {
 		for_each_child_of_node(child, grandchild)
 			unittest(!of_find_device_by_node(grandchild),
-				 "device didn't get destroyed '%s'\n",
-				 grandchild->name);
+				 "device didn't get destroyed '%pOFn'\n",
+				 grandchild);
 	}
 
 	platform_device_unregister(test_bus);
@@ -2357,11 +2361,14 @@ static __init void of_unittest_overlay_high_level(void)
 		}
 	}
 
-	for (np = overlay_base_root->child; np; np = np->sibling) {
-		if (of_get_child_by_name(of_root, np->name)) {
-			unittest(0, "illegal node name in overlay_base %s",
-				np->name);
-			return;
+	for_each_child_of_node(overlay_base_root, np) {
+		struct device_node *base_child;
+		for_each_child_of_node(of_root, base_child) {
+			if (!strcmp(np->full_name, base_child->full_name)) {
+				unittest(0, "illegal node name in overlay_base %pOFn",
+					 np);
+				return;
+			}
 		}
 	}