diff --git a/hw/top_earlgrey/data/top_earlgrey.hjson b/hw/top_earlgrey/data/top_earlgrey.hjson
index 514272b..1cffa00 100644
--- a/hw/top_earlgrey/data/top_earlgrey.hjson
+++ b/hw/top_earlgrey/data/top_earlgrey.hjson
@@ -950,6 +950,8 @@
       'lc_ctrl.lc_iso_part_sw_wr_en'       : ['flash_ctrl.lc_iso_part_sw_wr_en'],
       'lc_ctrl.lc_seed_hw_rd_en'           : ['otp_ctrl.lc_seed_hw_rd_en',
                                               'flash_ctrl.lc_seed_hw_rd_en'],
+
+      //'spi_device.passthrough': ['spi_host0.passthrough']
     }
 
     // top is to connect to top net/struct.