scripts/dtc: Update to upstream version v1.6.0-2-g87a656ae5ff9

index 756f0fa9203f..4b3c486f1399 100644
@@ -352,7 +352,7 @@ static void check_unit_address_vs_reg(struct check *c, struct dt_info *dti,
 			FAIL(c, dti, node, "node has a reg or ranges property, but no unit name");
 	} else {
 		if (unitname[0])
-			FAIL(c, dti, node, "node has a unit name, but no reg property");
+			FAIL(c, dti, node, "node has a unit name, but no reg or ranges property");
 	}
 }
 WARNING(unit_address_vs_reg, check_unit_address_vs_reg, NULL);

@@ -765,13 +765,15 @@ static void check_ranges_format(struct check *c, struct dt_info *dti,
 {
 	struct property *prop;
 	int c_addr_cells, p_addr_cells, c_size_cells, p_size_cells, entrylen;
+	const char *ranges = c->data;
 
-	prop = get_property(node, "ranges");
+	prop = get_property(node, ranges);
 	if (!prop)
 		return;
 
 	if (!node->parent) {
-		FAIL_PROP(c, dti, node, prop, "Root node has a \"ranges\" property");
+		FAIL_PROP(c, dti, node, prop, "Root node has a \"%s\" property",
+			  ranges);
 		return;
 	}
 

@@ -783,23 +785,24 @@ static void check_ranges_format(struct check *c, struct dt_info *dti,
 
 	if (prop->val.len == 0) {
 		if (p_addr_cells != c_addr_cells)
-			FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+			FAIL_PROP(c, dti, node, prop, "empty \"%s\" property but its "
 				  "#address-cells (%d) differs from %s (%d)",
-				  c_addr_cells, node->parent->fullpath,
+				  ranges, c_addr_cells, node->parent->fullpath,
 				  p_addr_cells);
 		if (p_size_cells != c_size_cells)
-			FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+			FAIL_PROP(c, dti, node, prop, "empty \"%s\" property but its "
 				  "#size-cells (%d) differs from %s (%d)",
-				  c_size_cells, node->parent->fullpath,
+				  ranges, c_size_cells, node->parent->fullpath,
 				  p_size_cells);
 	} else if ((prop->val.len % entrylen) != 0) {
-		FAIL_PROP(c, dti, node, prop, "\"ranges\" property has invalid length (%d bytes) "
+		FAIL_PROP(c, dti, node, prop, "\"%s\" property has invalid length (%d bytes) "
 			  "(parent #address-cells == %d, child #address-cells == %d, "
-			  "#size-cells == %d)", prop->val.len,
+			  "#size-cells == %d)", ranges, prop->val.len,
 			  p_addr_cells, c_addr_cells, c_size_cells);
 	}
 }
-WARNING(ranges_format, check_ranges_format, NULL, &addr_size_cells);
+WARNING(ranges_format, check_ranges_format, "ranges", &addr_size_cells);
+WARNING(dma_ranges_format, check_ranges_format, "dma-ranges", &addr_size_cells);
 
 static const struct bus_type pci_bus = {
 	.name = "PCI",

@@ -1780,7 +1783,7 @@ static struct check *check_table[] = {
 	&property_name_chars_strict,
 	&node_name_chars_strict,
 
-	&addr_size_cells, &reg_format, &ranges_format,
+	&addr_size_cells, &reg_format, &ranges_format, &dma_ranges_format,
 
 	&unit_address_vs_reg,
 	&unit_address_format,

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index 76bea22f734f..26759d5dfb8c 100644
@@ -12,10 +12,13 @@
 
 static int fdt_sw_probe_(void *fdt)
 {
-	if (fdt_magic(fdt) == FDT_MAGIC)
-		return -FDT_ERR_BADSTATE;
-	else if (fdt_magic(fdt) != FDT_SW_MAGIC)
-		return -FDT_ERR_BADMAGIC;
+	if (!can_assume(VALID_INPUT)) {
+		if (fdt_magic(fdt) == FDT_MAGIC)
+			return -FDT_ERR_BADSTATE;
+		else if (fdt_magic(fdt) != FDT_SW_MAGIC)
+			return -FDT_ERR_BADMAGIC;
+	}
+
 	return 0;
 }
 

@@ -38,7 +41,7 @@ static int fdt_sw_probe_memrsv_(void *fdt)
 	if (err)
 		return err;
 
-	if (fdt_off_dt_strings(fdt) != 0)
+	if (!can_assume(VALID_INPUT) && fdt_off_dt_strings(fdt) != 0)
 		return -FDT_ERR_BADSTATE;
 	return 0;
 }

@@ -64,7 +67,8 @@ static int fdt_sw_probe_struct_(void *fdt)
 	if (err)
 		return err;
 
-	if (fdt_off_dt_strings(fdt) != fdt_totalsize(fdt))
+	if (!can_assume(VALID_INPUT) &&
+	    fdt_off_dt_strings(fdt) != fdt_totalsize(fdt))
 		return -FDT_ERR_BADSTATE;
 	return 0;
 }

@@ -151,7 +155,8 @@ int fdt_resize(void *fdt, void *buf, int bufsize)
 	headsize = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
 	tailsize = fdt_size_dt_strings(fdt);
 
-	if ((headsize + tailsize) > fdt_totalsize(fdt))
+	if (!can_assume(VALID_DTB) &&
+	    headsize + tailsize > fdt_totalsize(fdt))
 		return -FDT_ERR_INTERNAL;
 
 	if ((headsize + tailsize) > bufsize)

index 8907b09b86cc..36fadcdea516 100644
@@ -266,11 +266,12 @@ fdt_set_hdr_(size_dt_struct);
  * fdt_header_size - return the size of the tree's header
  * @fdt: pointer to a flattened device tree
  */
+size_t fdt_header_size(const void *fdt);
+
+/**
+ * fdt_header_size_ - internal function which takes a version number
+ */
 size_t fdt_header_size_(uint32_t version);
-static inline size_t fdt_header_size(const void *fdt)
-{
-	return fdt_header_size_(fdt_version(fdt));
-}
 
 /**
  * fdt_check_header - sanity check a device tree header

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index 6dba95d23207..61dd7112d6e4 100644
@@ -1 +1 @@
-#define DTC_VERSION "DTC 1.5.0-gc40aeb60"
+#define DTC_VERSION "DTC 1.6.0-g87a656ae"