Index: sys/dev/fdt/fdt_common.h
===================================================================
--- sys/dev/fdt/fdt_common.h
+++ sys/dev/fdt/fdt_common.h
@@ -88,6 +88,7 @@
 int fdt_get_range(phandle_t, int, u_long *, u_long *);
 int fdt_immr_addr(vm_offset_t);
 int fdt_regsize(phandle_t, u_long *, u_long *);
+int fdt_reg_by_name(phandle_t node, const char *name, u_long *start, u_long *count);
 int fdt_is_compatible_strict(phandle_t, const char *);
 int fdt_is_enabled(phandle_t);
 int fdt_pm_is_enabled(phandle_t);
Index: sys/dev/fdt/fdt_common.c
===================================================================
--- sys/dev/fdt/fdt_common.c
+++ sys/dev/fdt/fdt_common.c
@@ -477,6 +477,54 @@
 }
 
 int
+fdt_reg_by_name(phandle_t node, const char *name, u_long *start, u_long *count)
+{
+	pcell_t *reg, *regptr;
+	pcell_t addr_cells, size_cells;
+	int tuple_size, tuples, idx;
+	long busaddr, bussize;
+	int rv;
+
+	rv = 0;
+	regptr = NULL;
+	if (ofw_bus_find_string_index(node, "reg-names", name, &idx) != 0)
+		return (EINVAL);
+
+	if (fdt_addrsize_cells(OF_parent(node), &addr_cells, &size_cells) != 0)
+		return (ENXIO);
+	if (fdt_get_range(OF_parent(node), 0, &busaddr, &bussize)) {
+		busaddr = 0;
+		bussize = 0;
+	}
+
+	tuple_size = sizeof(pcell_t) * (addr_cells + size_cells);
+	tuples = OF_getprop_alloc(node, "reg", tuple_size, (void **)&reg);
+	debugf("addr_cells = %d, size_cells = %d\n", addr_cells, size_cells);
+	debugf(dev, "tuples = %d, tuple size = %d\n", tuples, tuple_size);
+	if (tuples <= 0) {
+		rv = EINVAL;
+		goto out;
+	}
+	if (idx > tuples - 1) {
+		rv = EINVAL;
+		goto out;
+	}
+
+	regptr = reg;
+	reg = regptr + ((addr_cells + size_cells) * idx);
+	fdt_data_to_res(reg, addr_cells, size_cells, start, count);
+
+	*start = *start + busaddr;
+	*count = *count + bussize;
+
+out:
+	if (regptr)
+		OF_prop_free(regptr);
+
+	return (rv);
+}
+
+int
 fdt_reg_to_rl(phandle_t node, struct resource_list *rl)
 {
 	u_long end, count, start;