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
  ...

30 files changed, 170 insertions, 128 deletions

diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index 439ba5c23693..f0404c6d1ff4 100644
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -706,8 +706,8 @@ static int parse_mc_ranges(struct device *dev,
 	*ranges_start = of_get_property(mc_node, "ranges", &ranges_len);
 	if (!(*ranges_start) || !ranges_len) {
 		dev_warn(dev,
-			 "missing or empty ranges property for device tree node '%s'\n",
-			 mc_node->name);
+			 "missing or empty ranges property for device tree node '%pOFn'\n",
+			 mc_node);
 		return 0;
 	}
 
@@ -730,7 +730,7 @@ static int parse_mc_ranges(struct device *dev,
 
 	tuple_len = range_tuple_cell_count * sizeof(__be32);
 	if (ranges_len % tuple_len != 0) {
-		dev_err(dev, "malformed ranges property '%s'\n", mc_node->name);
+		dev_err(dev, "malformed ranges property '%pOFn'\n", mc_node);
 		return -EINVAL;
 	}
 
diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 70db4d5638a6..5b2a11a88951 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -1229,7 +1229,7 @@ mbus_parse_ranges(struct device_node *node,
 	tuple_len = (*cell_count) * sizeof(__be32);
 
 	if (ranges_len % tuple_len) {
-		pr_warn("malformed ranges entry '%s'\n", node->name);
+		pr_warn("malformed ranges entry '%pOFn'\n", node);
 		return -EINVAL;
 	}
 	return 0;
diff --git a/drivers/clk/mvebu/clk-cpu.c b/drivers/clk/mvebu/clk-cpu.c
index 072aa38374ce..3045067448fb 100644
--- a/drivers/clk/mvebu/clk-cpu.c
+++ b/drivers/clk/mvebu/clk-cpu.c
@@ -183,7 +183,7 @@ static void __init of_cpu_clk_setup(struct device_node *node)
 		pr_warn("%s: pmu-dfs base register not set, dynamic frequency scaling not available\n",
 			__func__);
 
-	for_each_node_by_type(dn, "cpu")
+	for_each_of_cpu_node(dn)
 		ncpus++;
 
 	cpuclk = kcalloc(ncpus, sizeof(*cpuclk), GFP_KERNEL);
@@ -194,7 +194,7 @@ static void __init of_cpu_clk_setup(struct device_node *node)
 	if (WARN_ON(!clks))
 		goto clks_out;
 
-	for_each_node_by_type(dn, "cpu") {
+	for_each_of_cpu_node(dn) {
 		struct clk_init_data init;
 		struct clk *clk;
 		char *clk_name = kzalloc(5, GFP_KERNEL);
diff --git a/drivers/edac/cpc925_edac.c b/drivers/edac/cpc925_edac.c
index 2c98e020df05..3c0881ac9880 100644
--- a/drivers/edac/cpc925_edac.c
+++ b/drivers/edac/cpc925_edac.c
@@ -593,8 +593,7 @@ static void cpc925_mc_check(struct mem_ctl_info *mci)
 /******************** CPU err device********************************/
 static u32 cpc925_cpu_mask_disabled(void)
 {
-	struct device_node *cpus;
-	struct device_node *cpunode = NULL;
+	struct device_node *cpunode;
 	static u32 mask = 0;
 
 	/* use cached value if available */
@@ -603,20 +602,8 @@ static u32 cpc925_cpu_mask_disabled(void)
 
 	mask = APIMASK_ADI0 | APIMASK_ADI1;
 
-	cpus = of_find_node_by_path("/cpus");
-	if (cpus == NULL) {
-		cpc925_printk(KERN_DEBUG, "No /cpus node !\n");
-		return 0;
-	}
-
-	while ((cpunode = of_get_next_child(cpus, cpunode)) != NULL) {
+	for_each_of_cpu_node(cpunode) {
 		const u32 *reg = of_get_property(cpunode, "reg", NULL);
-
-		if (strcmp(cpunode->type, "cpu")) {
-			cpc925_printk(KERN_ERR, "Not a cpu node in /cpus: %s\n", cpunode->name);
-			continue;
-		}
-
 		if (reg == NULL || *reg > 2) {
 			cpc925_printk(KERN_ERR, "Bad reg value at %pOF\n", cpunode);
 			continue;
@@ -633,9 +620,6 @@ static u32 cpc925_cpu_mask_disabled(void)
 				"Assuming PI id is equal to CPU MPIC id!\n");
 	}
 
-	of_node_put(cpunode);
-	of_node_put(cpus);
-
 	return mask;
 }
 
diff --git a/drivers/firmware/scpi_pm_domain.c b/drivers/firmware/scpi_pm_domain.c
index f395dec27113..390aa13391e4 100644
--- a/drivers/firmware/scpi_pm_domain.c
+++ b/drivers/firmware/scpi_pm_domain.c
@@ -121,7 +121,7 @@ static int scpi_pm_domain_probe(struct platform_device *pdev)
 
 		scpi_pd->domain = i;
 		scpi_pd->ops = scpi_ops;
-		sprintf(scpi_pd->name, "%s.%d", np->name, i);
+		sprintf(scpi_pd->name, "%pOFn.%d", np, i);
 		scpi_pd->genpd.name = scpi_pd->name;
 		scpi_pd->genpd.power_off = scpi_pd_power_off;
 		scpi_pd->genpd.power_on = scpi_pd_power_on;
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 2d45d1dd9554..643f5edd68fe 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1446,8 +1446,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 	}
 
 	/* The CEC module handles HDMI hotplug detection */
-	cec_np = of_find_compatible_node(np->parent, NULL,
-					 "mediatek,mt8173-cec");
+	cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
 	if (!cec_np) {
 		dev_err(dev, "Failed to find CEC node\n");
 		return -EINVAL;
@@ -1457,8 +1456,10 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 	if (!cec_pdev) {
 		dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
 			cec_np);
+		of_node_put(cec_np);
 		return -EPROBE_DEFER;
 	}
+	of_node_put(cec_np);
 	hdmi->cec_dev = &cec_pdev->dev;
 
 	/*
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index da1363a0c54d..93d70f4a2154 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -633,8 +633,7 @@ static int adreno_get_legacy_pwrlevels(struct device *dev)
 	struct device_node *child, *node;
 	int ret;
 
-	node = of_find_compatible_node(dev->of_node, NULL,
-		"qcom,gpu-pwrlevels");
+	node = of_get_compatible_child(dev->of_node, "qcom,gpu-pwrlevels");
 	if (!node) {
 		dev_err(dev, "Could not find the GPU powerlevels\n");
 		return -ENXIO;
@@ -655,6 +654,8 @@ static int adreno_get_legacy_pwrlevels(struct device *dev)
 			dev_pm_opp_add(dev, val, 0);
 	}
 
+	of_node_put(node);
+
 	return 0;
 }
 
diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c
index 8540625796a1..1b955aea44dd 100644
--- a/drivers/iommu/fsl_pamu.c
+++ b/drivers/iommu/fsl_pamu.c
@@ -543,7 +543,7 @@ u32 get_stash_id(u32 stash_dest_hint, u32 vcpu)
 		return ~(u32)0;
 	}
 
-	for_each_node_by_type(node, "cpu") {
+	for_each_of_cpu_node(node) {
 		prop = of_get_property(node, "reg", &len);
 		for (i = 0; i < len / sizeof(u32); i++) {
 			if (be32_to_cpup(&prop[i]) == vcpu) {
diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index 35564a8a48f9..a6cbaca37e94 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -341,7 +341,7 @@ static struct device_node *bcmgenet_mii_of_find_mdio(struct bcmgenet_priv *priv)
 	if (!compat)
 		return NULL;
 
-	priv->mdio_dn = of_find_compatible_node(dn, NULL, compat);
+	priv->mdio_dn = of_get_compatible_child(dn, compat);
 	kfree(compat);
 	if (!priv->mdio_dn) {
 		dev_err(kdev, "unable to find MDIO bus node\n");
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index f9a61f90cfbc..0f660af01a4b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -714,8 +714,9 @@ static int get_ephy_nodes(struct stmmac_priv *priv)
 		return -ENODEV;
 	}
 
-	mdio_internal = of_find_compatible_node(mdio_mux, NULL,
+	mdio_internal = of_get_compatible_child(mdio_mux,
 						"allwinner,sun8i-h3-mdio-internal");
+	of_node_put(mdio_mux);
 	if (!mdio_internal) {
 		dev_err(priv->device, "Cannot get internal_mdio node\n");
 		return -ENODEV;
@@ -729,13 +730,20 @@ static int get_ephy_nodes(struct stmmac_priv *priv)
 		gmac->rst_ephy = of_reset_control_get_exclusive(iphynode, NULL);
 		if (IS_ERR(gmac->rst_ephy)) {
 			ret = PTR_ERR(gmac->rst_ephy);
-			if (ret == -EPROBE_DEFER)
+			if (ret == -EPROBE_DEFER) {
+				of_node_put(iphynode);
+				of_node_put(mdio_internal);
 				return ret;
+			}
 			continue;
 		}
 		dev_info(priv->device, "Found internal PHY node\n");
+		of_node_put(iphynode);
+		of_node_put(mdio_internal);
 		return 0;
 	}
+
+	of_node_put(mdio_internal);
 	return -ENODEV;
 }
 
diff --git a/drivers/nfc/nfcmrvl/uart.c b/drivers/nfc/nfcmrvl/uart.c
index 91162f8e0366..9a22056e8d9e 100644
--- a/drivers/nfc/nfcmrvl/uart.c
+++ b/drivers/nfc/nfcmrvl/uart.c
@@ -73,10 +73,9 @@ static int nfcmrvl_uart_parse_dt(struct device_node *node,
 	struct device_node *matched_node;
 	int ret;
 
-	matched_node = of_find_compatible_node(node, NULL, "marvell,nfc-uart");
+	matched_node = of_get_compatible_child(node, "marvell,nfc-uart");
 	if (!matched_node) {
-		matched_node = of_find_compatible_node(node, NULL,
-						       "mrvl,nfc-uart");
+		matched_node = of_get_compatible_child(node, "mrvl,nfc-uart");
 		if (!matched_node)
 			return -ENODEV;
 	}
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;
+			}
 		}
 	}
 
diff --git a/drivers/power/supply/twl4030_charger.c b/drivers/power/supply/twl4030_charger.c
index 80582c8f98fa..0e202d4273fb 100644
--- a/drivers/power/supply/twl4030_charger.c
+++ b/drivers/power/supply/twl4030_charger.c
@@ -1022,12 +1022,13 @@ static int twl4030_bci_probe(struct platform_device *pdev)
 	if (bci->dev->of_node) {
 		struct device_node *phynode;
 
-		phynode = of_find_compatible_node(bci->dev->of_node->parent,
-						  NULL, "ti,twl4030-usb");
+		phynode = of_get_compatible_child(bci->dev->of_node->parent,
+						  "ti,twl4030-usb");
 		if (phynode) {
 			bci->usb_nb.notifier_call = twl4030_bci_usb_ncb;
 			bci->transceiver = devm_usb_get_phy_by_node(
 				bci->dev, phynode, &bci->usb_nb);
+			of_node_put(phynode);
 			if (IS_ERR(bci->transceiver)) {
 				ret = PTR_ERR(bci->transceiver);
 				if (ret == -EPROBE_DEFER)
diff --git a/drivers/soc/dove/pmu.c b/drivers/soc/dove/pmu.c
index 5abb08ffb74d..ffc5311c0ed8 100644
--- a/drivers/soc/dove/pmu.c
+++ b/drivers/soc/dove/pmu.c
@@ -383,7 +383,7 @@ int __init dove_init_pmu(void)
 
 	domains_node = of_get_child_by_name(np_pmu, "domains");
 	if (!domains_node) {
-		pr_err("%s: failed to find domains sub-node\n", np_pmu->name);
+		pr_err("%pOFn: failed to find domains sub-node\n", np_pmu);
 		return 0;
 	}
 
@@ -396,7 +396,7 @@ int __init dove_init_pmu(void)
 	pmu->pmc_base = of_iomap(pmu->of_node, 0);
 	pmu->pmu_base = of_iomap(pmu->of_node, 1);
 	if (!pmu->pmc_base || !pmu->pmu_base) {
-		pr_err("%s: failed to map PMU\n", np_pmu->name);
+		pr_err("%pOFn: failed to map PMU\n", np_pmu);
 		iounmap(pmu->pmu_base);
 		iounmap(pmu->pmc_base);
 		kfree(pmu);
@@ -414,7 +414,7 @@ int __init dove_init_pmu(void)
 			break;
 
 		domain->pmu = pmu;
-		domain->base.name = kstrdup(np->name, GFP_KERNEL);
+		domain->base.name = kasprintf(GFP_KERNEL, "%pOFn", np);
 		if (!domain->base.name) {
 			kfree(domain);
 			break;
@@ -444,7 +444,7 @@ int __init dove_init_pmu(void)
 	/* Loss of the interrupt controller is not a fatal error. */
 	parent_irq = irq_of_parse_and_map(pmu->of_node, 0);
 	if (!parent_irq) {
-		pr_err("%s: no interrupt specified\n", np_pmu->name);
+		pr_err("%pOFn: no interrupt specified\n", np_pmu);
 	} else {
 		ret = dove_init_pmu_irq(pmu, parent_irq);
 		if (ret)
diff --git a/drivers/soc/fsl/qe/qe_tdm.c b/drivers/soc/fsl/qe/qe_tdm.c
index f744c214f680..f78c34647ca2 100644
--- a/drivers/soc/fsl/qe/qe_tdm.c
+++ b/drivers/soc/fsl/qe/qe_tdm.c
@@ -131,7 +131,7 @@ int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
 
 	pdev = of_find_device_by_node(np2);
 	if (!pdev) {
-		pr_err("%s: failed to lookup pdev\n", np2->name);
+		pr_err("%pOFn: failed to lookup pdev\n", np2);
 		of_node_put(np2);
 		return -EINVAL;
 	}
@@ -153,7 +153,7 @@ int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
 	pdev = of_find_device_by_node(np2);
 	if (!pdev) {
 		ret = -EINVAL;
-		pr_err("%s: failed to lookup pdev\n", np2->name);
+		pr_err("%pOFn: failed to lookup pdev\n", np2);
 		of_node_put(np2);
 		goto err_miss_siram_property;
 	}
diff --git a/drivers/soc/qcom/apr.c b/drivers/soc/qcom/apr.c
index 57af8a537332..4bda793ba6ae 100644
--- a/drivers/soc/qcom/apr.c
+++ b/drivers/soc/qcom/apr.c
@@ -219,7 +219,7 @@ static int apr_add_device(struct device *dev, struct device_node *np,
 	adev->domain_id = id->domain_id;
 	adev->version = id->svc_version;
 	if (np)
-		strncpy(adev->name, np->name, APR_NAME_SIZE);
+		snprintf(adev->name, APR_NAME_SIZE, "%pOFn", np);
 	else
 		strncpy(adev->name, id->name, APR_NAME_SIZE);
 
diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c
index 6dff8682155f..6f86a726bb45 100644
--- a/drivers/soc/rockchip/pm_domains.c
+++ b/drivers/soc/rockchip/pm_domains.c
@@ -392,21 +392,21 @@ static int rockchip_pm_add_one_domain(struct rockchip_pmu *pmu,
 	error = of_property_read_u32(node, "reg", &id);
 	if (error) {
 		dev_err(pmu->dev,
-			"%s: failed to retrieve domain id (reg): %d\n",
-			node->name, error);
+			"%pOFn: failed to retrieve domain id (reg): %d\n",
+			node, error);
 		return -EINVAL;
 	}
 
 	if (id >= pmu->info->num_domains) {
-		dev_err(pmu->dev, "%s: invalid domain id %d\n",
-			node->name, id);
+		dev_err(pmu->dev, "%pOFn: invalid domain id %d\n",
+			node, id);
 		return -EINVAL;
 	}
 
 	pd_info = &pmu->info->domain_info[id];
 	if (!pd_info) {
-		dev_err(pmu->dev, "%s: undefined domain id %d\n",
-			node->name, id);
+		dev_err(pmu->dev, "%pOFn: undefined domain id %d\n",
+			node, id);
 		return -EINVAL;
 	}
 
@@ -424,8 +424,8 @@ static int rockchip_pm_add_one_domain(struct rockchip_pmu *pmu,
 		if (!pd->clks)
 			return -ENOMEM;
 	} else {
-		dev_dbg(pmu->dev, "%s: doesn't have clocks: %d\n",
-			node->name, pd->num_clks);
+		dev_dbg(pmu->dev, "%pOFn: doesn't have clocks: %d\n",
+			node, pd->num_clks);
 		pd->num_clks = 0;
 	}
 
@@ -434,8 +434,8 @@ static int rockchip_pm_add_one_domain(struct rockchip_pmu *pmu,
 		if (IS_ERR(pd->clks[i].clk)) {
 			error = PTR_ERR(pd->clks[i].clk);
 			dev_err(pmu->dev,
-				"%s: failed to get clk at index %d: %d\n",
-				node->name, i, error);
+				"%pOFn: failed to get clk at index %d: %d\n",
+				node, i, error);
 			return error;
 		}
 	}
@@ -486,8 +486,8 @@ static int rockchip_pm_add_one_domain(struct rockchip_pmu *pmu,
 	error = rockchip_pd_power(pd, true);
 	if (error) {
 		dev_err(pmu->dev,
-			"failed to power on domain '%s': %d\n",
-			node->name, error);
+			"failed to power on domain '%pOFn': %d\n",
+			node, error);
 		goto err_unprepare_clocks;
 	}
 
@@ -575,24 +575,24 @@ static int rockchip_pm_add_subdomain(struct rockchip_pmu *pmu,
 		error = of_property_read_u32(parent, "reg", &idx);
 		if (error) {
 			dev_err(pmu->dev,
-				"%s: failed to retrieve domain id (reg): %d\n",
-				parent->name, error);
+				"%pOFn: failed to retrieve domain id (reg): %d\n",
+				parent, error);
 			goto err_out;
 		}
 		parent_domain = pmu->genpd_data.domains[idx];
 
 		error = rockchip_pm_add_one_domain(pmu, np);
 		if (error) {
-			dev_err(pmu->dev, "failed to handle node %s: %d\n",
-				np->name, error);
+			dev_err(pmu->dev, "failed to handle node %pOFn: %d\n",
+				np, error);
 			goto err_out;
 		}
 
 		error = of_property_read_u32(np, "reg", &idx);
 		if (error) {
 			dev_err(pmu->dev,
-				"%s: failed to retrieve domain id (reg): %d\n",
-				np->name, error);
+				"%pOFn: failed to retrieve domain id (reg): %d\n",
+				np, error);
 			goto err_out;
 		}
 		child_domain = pmu->genpd_data.domains[idx];
@@ -683,16 +683,16 @@ static int rockchip_pm_domain_probe(struct platform_device *pdev)
 	for_each_available_child_of_node(np, node) {
 		error = rockchip_pm_add_one_domain(pmu, node);
 		if (error) {
-			dev_err(dev, "failed to handle node %s: %d\n",
-				node->name, error);
+			dev_err(dev, "failed to handle node %pOFn: %d\n",
+				node, error);
 			of_node_put(node);
 			goto err_out;
 		}
 
 		error = rockchip_pm_add_subdomain(pmu, node);
 		if (error < 0) {
-			dev_err(dev, "failed to handle subdomain node %s: %d\n",
-				node->name, error);
+			dev_err(dev, "failed to handle subdomain node %pOFn: %d\n",
+				node, error);
 			of_node_put(node);
 			goto err_out;
 		}
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 2d6f3fcf3211..acbe63e925d5 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -796,7 +796,7 @@ static void tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
 
 	id = tegra_powergate_lookup(pmc, np->name);
 	if (id < 0) {
-		pr_err("powergate lookup failed for %s: %d\n", np->name, id);
+		pr_err("powergate lookup failed for %pOFn: %d\n", np, id);
 		goto free_mem;
 	}
 
@@ -816,13 +816,13 @@ static void tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
 
 	err = tegra_powergate_of_get_clks(pg, np);
 	if (err < 0) {
-		pr_err("failed to get clocks for %s: %d\n", np->name, err);
+		pr_err("failed to get clocks for %pOFn: %d\n", np, err);
 		goto set_available;
 	}
 
 	err = tegra_powergate_of_get_resets(pg, np, off);
 	if (err < 0) {
-		pr_err("failed to get resets for %s: %d\n", np->name, err);
+		pr_err("failed to get resets for %pOFn: %d\n", np, err);
 		goto remove_clks;
 	}
 
@@ -851,15 +851,15 @@ static void tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
 
 	err = pm_genpd_init(&pg->genpd, NULL, off);
 	if (err < 0) {
-		pr_err("failed to initialise PM domain %s: %d\n", np->name,
+		pr_err("failed to initialise PM domain %pOFn: %d\n", np,
 		       err);
 		goto remove_resets;
 	}
 
 	err = of_genpd_add_provider_simple(np, &pg->genpd);
 	if (err < 0) {
-		pr_err("failed to add PM domain provider for %s: %d\n",
-		       np->name, err);
+		pr_err("failed to add PM domain provider for %pOFn: %d\n",
+		       np, err);
 		goto remove_genpd;
 	}
 
diff --git a/drivers/soc/ti/knav_dma.c b/drivers/soc/ti/knav_dma.c
index 224d7ddeeb76..bbd4e5bc8707 100644
--- a/drivers/soc/ti/knav_dma.c
+++ b/drivers/soc/ti/knav_dma.c
@@ -544,15 +544,15 @@ static void __iomem *pktdma_get_regs(struct knav_dma_device *dma,
 
 	ret = of_address_to_resource(node, index, &res);
 	if (ret) {
-		dev_err(dev, "Can't translate of node(%s) address for index(%d)\n",
-			node->name, index);
+		dev_err(dev, "Can't translate of node(%pOFn) address for index(%d)\n",
+			node, index);
 		return ERR_PTR(ret);
 	}
 
 	regs = devm_ioremap_resource(kdev->dev, &res);
 	if (IS_ERR(regs))
-		dev_err(dev, "Failed to map register base for index(%d) node(%s)\n",
-			index, node->name);
+		dev_err(dev, "Failed to map register base for index(%d) node(%pOFn)\n",
+			index, node);
 	if (_size)
 		*_size = resource_size(&res);
 
diff --git a/drivers/soc/ti/knav_qmss_queue.c b/drivers/soc/ti/knav_qmss_queue.c
index 6755f2af5619..b5d5673c255c 100644
--- a/drivers/soc/ti/knav_qmss_queue.c
+++ b/drivers/soc/ti/knav_qmss_queue.c
@@ -1382,15 +1382,15 @@ static void __iomem *knav_queue_map_reg(struct knav_device *kdev,
 
 	ret = of_address_to_resource(node, index, &res);
 	if (ret) {
-		dev_err(kdev->dev, "Can't translate of node(%s) address for index(%d)\n",
-			node->name, index);
+		dev_err(kdev->dev, "Can't translate of node(%pOFn) address for index(%d)\n",
+			node, index);
 		return ERR_PTR(ret);
 	}
 
 	regs = devm_ioremap_resource(kdev->dev, &res);
 	if (IS_ERR(regs))
-		dev_err(kdev->dev, "Failed to map register base for index(%d) node(%s)\n",
-			index, node->name);
+		dev_err(kdev->dev, "Failed to map register base for index(%d) node(%pOFn)\n",
+			index, node);
 	return regs;
 }
 
diff --git a/drivers/video/fbdev/fsl-diu-fb.c b/drivers/video/fbdev/fsl-diu-fb.c
index bc9eb8afc313..332a56b6811f 100644
--- a/drivers/video/fbdev/fsl-diu-fb.c
+++ b/drivers/video/fbdev/fsl-diu-fb.c
@@ -1925,7 +1925,7 @@ static int __init fsl_diu_init(void)
 	pr_info("Freescale Display Interface Unit (DIU) framebuffer driver\n");
 
 #ifdef CONFIG_NOT_COHERENT_CACHE
-	np = of_find_node_by_type(NULL, "cpu");
+	np = of_get_cpu_node(0, NULL);
 	if (!np) {
 		pr_err("fsl-diu-fb: can't find 'cpu' device node\n");
 		return -ENODEV;