diff --git a/scripts/dts/gen_defines.py b/scripts/dts/gen_defines.py
index f9d825616a2..fa3b7b19f2c 100755
--- a/scripts/dts/gen_defines.py
+++ b/scripts/dts/gen_defines.py
@@ -1005,56 +1005,20 @@ def write_spi_dev(node):
     # Writes SPI device GPIO chip select data if there is any
 
     cs_gpio = node.spi_cs_gpio
-    if cs_gpio is not None:
-        write_phandle_val_list_entry(node, cs_gpio, None, "CS_GPIOS")
+    if cs_gpio is None:
+        return
 
-
-def write_phandle_val_list_entry(node, entry, i, ident):
-    # write_spi_dev() helper.
-    #
-    # Adds 'i' as an index to identifiers unless it's None.
-    #
-    # 'entry' is an edtlib.ControllerAndData instance.
-    #
-    # Returns the identifier for the macro that provides the
-    # initializer for the entire entry.
-
-    initializer_vals = []
-    if entry.controller.label is not None:
-        ctrl_ident = ident + "_CONTROLLER"  # e.g. PWMS_CONTROLLER
-        if entry.name:
-            name_alias = f"{str2ident(entry.name)}_{ctrl_ident}"
+    primary_macros = None
+    def write_spi_dev_for_ident(node, ident):
+        nonlocal primary_macros
+        if primary_macros is None:
+            primary_macros = write_controller_and_data_primary(ident,
+                                                               "CS_GPIOS", cs_gpio, "")
         else:
-            name_alias = None
-        # Ugly backwards compatibility hack. Only add the index if there's
-        # more than one entry.
-        if i is not None:
-            ctrl_ident += f"_{i}"
-        initializer_vals.append(quote_str(entry.controller.label))
-        out_node_s(node, ctrl_ident, entry.controller.label, name_alias)
+            write_controller_and_data_other(ident, "CS_GPIOS", cs_gpio, "",
+                                            primary_macros)
 
-    for cell, val in entry.data.items():
-        cell_ident = f"{ident}_{str2ident(cell)}"  # e.g. PWMS_CHANNEL
-        if entry.name:
-            # From e.g. 'pwm-names = ...'
-            name_alias = f"{str2ident(entry.name)}_{cell_ident}"
-        else:
-            name_alias = None
-        # Backwards compatibility (see above)
-        if i is not None:
-            cell_ident += f"_{i}"
-        out_node(node, cell_ident, val, name_alias)
-
-    initializer_vals += entry.data.values()
-
-    initializer_ident = ident
-    if entry.name:
-        name_alias = f"{initializer_ident}_{str2ident(entry.name)}"
-    else:
-        name_alias = None
-    if i is not None:
-        initializer_ident += f"_{i}"
-    return out_node_init(node, initializer_ident, initializer_vals, name_alias)
+    for_each_ident(node, write_spi_dev_for_ident)
 
 
 def write_clocks(node):
@@ -1207,16 +1171,6 @@ def out_node_s(node, ident, s, name_alias=None, deprecation_msg=None):
     return out_node(node, ident, quote_str(s), name_alias, deprecation_msg)
 
 
-def out_node_init(node, ident, elms, name_alias=None, deprecation_msg=None):
-    # Like out_node(), but generates an {e1, e2, ...} initializer with the
-    # elements in the iterable 'elms'.
-    #
-    # Returns the generated macro name for 'ident'.
-
-    return out_node(node, ident, "{" + ", ".join(map(str, elms)) + "}",
-                    name_alias, deprecation_msg)
-
-
 def out_s(ident, val):
     # Like out(), but puts quotes around 'val' and escapes any double
     # quotes and backslashes within it