diff --git a/scripts/dts/edtlib.py b/scripts/dts/edtlib.py
index 3eb8521b846..93ae36344ef 100644
--- a/scripts/dts/edtlib.py
+++ b/scripts/dts/edtlib.py
@@ -1261,8 +1261,14 @@ class Node:
                               .format(address_cells, size_cells)):
             reg = Register()
             reg.node = self
-            reg.addr = _translate(to_num(raw_reg[:4*address_cells]), node)
-            reg.size = to_num(raw_reg[4*address_cells:])
+            if address_cells == 0:
+                reg.addr = None
+            else:
+                reg.addr = _translate(to_num(raw_reg[:4*address_cells]), node)
+            if size_cells == 0:
+                reg.size = None
+            else:
+                reg.size = to_num(raw_reg[4*address_cells:])
             if size_cells != 0 and reg.size == 0:
                 _err("zero-sized 'reg' in {!r} seems meaningless (maybe you "
                      "want a size of one or #size-cells = 0 instead)"
@@ -1411,8 +1417,8 @@ class Register:
       there is no 'reg-names' property
 
     addr:
-      The starting address of the register, in the parent address space. Any
-      'ranges' properties are taken into account.
+      The starting address of the register, in the parent address space, or None
+      if #address-cells is zero. Any 'ranges' properties are taken into account.
 
     size:
       The length of the register in bytes
@@ -1422,8 +1428,10 @@ class Register:
 
         if self.name is not None:
             fields.append("name: " + self.name)
-        fields.append("addr: " + hex(self.addr))
-        fields.append("size: " + hex(self.size))
+        if self.addr is not None:
+            fields.append("addr: " + hex(self.addr))
+        if self.size is not None:
+            fields.append("size: " + hex(self.size))
 
         return "<Register, {}>".format(", ".join(fields))
 
diff --git a/scripts/dts/testedtlib.py b/scripts/dts/testedtlib.py
index 4d14209ee65..8355275229e 100755
--- a/scripts/dts/testedtlib.py
+++ b/scripts/dts/testedtlib.py
@@ -63,10 +63,10 @@ warning: "#cells:" in test-bindings/deprecated.yaml is deprecated and will be re
     #
 
     verify_streq(edt.get_node("/reg-zero-address-cells/node").regs,
-                 "[<Register, addr: 0x0, size: 0x1>, <Register, addr: 0x0, size: 0x2>]")
+                 "[<Register, size: 0x1>, <Register, size: 0x2>]")
 
     verify_streq(edt.get_node("/reg-zero-size-cells/node").regs,
-                 "[<Register, addr: 0x1, size: 0x0>, <Register, addr: 0x2, size: 0x0>]")
+                 "[<Register, addr: 0x1>, <Register, addr: 0x2>]")
 
     verify_streq(edt.get_node("/reg-ranges/parent/node").regs,
                  "[<Register, addr: 0x5, size: 0x1>, <Register, addr: 0xe0000000f, size: 0x1>, <Register, addr: 0xc0000000e, size: 0x1>, <Register, addr: 0xc0000000d, size: 0x1>, <Register, addr: 0xa0000000b, size: 0x1>, <Register, addr: 0x0, size: 0x1>]")
diff --git a/scripts/kconfig/kconfigfunctions.py b/scripts/kconfig/kconfigfunctions.py
index 506c43b7894..91b95112608 100644
--- a/scripts/kconfig/kconfigfunctions.py
+++ b/scripts/kconfig/kconfigfunctions.py
@@ -173,6 +173,9 @@ def _node_reg_addr(node, index, unit):
     if int(index) >= len(node.regs):
         return 0
 
+    if node.regs[int(index)].addr is None:
+        return 0
+
     return node.regs[int(index)].addr >> _dt_units_to_scale(unit)
 
 
@@ -186,6 +189,9 @@ def _node_reg_size(node, index, unit):
     if int(index) >= len(node.regs):
         return 0
 
+    if node.regs[int(index)].size is None:
+        return 0
+
     return node.regs[int(index)].size >> _dt_units_to_scale(unit)