diff --git a/src/json2daisy/json2daisy.py b/src/json2daisy/json2daisy.py
index 131eb04..0504b71 100644
--- a/src/json2daisy/json2daisy.py
+++ b/src/json2daisy/json2daisy.py
@@ -193,17 +193,17 @@ def generate_header(board_description_dict: dict) -> 'tuple[str, dict]':
         target['aliases'] = {}
 
     if 'display' in target:
-        # apply defaults
-        target['display'] = {
-          'driver': "daisy::SSD130x4WireSpi128x64Driver",
-          'config': [],
-          'dim': [128, 64]
-        }
+        # apply defaults if not present in config
+        target['display']['driver'] = target['display'].get('driver', "daisy::SSD130x4WireSpi128x64Driver")
+        target['display']['config'] = target['display'].get('config', [])
+        target['display']['dim'] = target['display'].get('dim', [128, 64])
 
         target['defines']['OOPSY_TARGET_HAS_OLED'] = 1
         target['defines']['OOPSY_OLED_DISPLAY_WIDTH'] = target['display']['dim'][0]
         target['defines']['OOPSY_OLED_DISPLAY_HEIGHT'] = target['display']['dim'][1]
 
+        target['displayprocess'] = target['display'].get('process', '')
+
     replacements = {}
     replacements['name'] = target['name']
     replacements['som'] = som
@@ -322,7 +322,8 @@ def generate_header(board_description_dict: dict) -> 'tuple[str, dict]':
         'components': components,
         'aliases': target['aliases'],
         'channels': audio_channels,
-        'has_midi': target.get('has_midi', False)
+        'has_midi': target.get('has_midi', False),
+        'displayprocess': target.get('displayprocess', '')
       }
 
     return rendered_header, board_info