diff --git a/src/mainboard/google/rex/variants/ovis/memory/Makefile.inc b/src/mainboard/google/rex/variants/ovis/memory/Makefile.inc
index eace2e443e..2083b18608 100644
--- a/src/mainboard/google/rex/variants/ovis/memory/Makefile.inc
+++ b/src/mainboard/google/rex/variants/ovis/memory/Makefile.inc
@@ -1,5 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # This is an auto-generated file. Do not edit!!
-# Add memory parts in mem_parts_used.txt and run spd_tools to regenerate.
+# Generated by:
+# ./util/spd_tools/bin/part_id_gen MTL lp5 src/mainboard/google/rex/variants/ovis/memory src/mainboard/google/rex/variants/ovis/memory/mem_parts_used.txt
 
-SPD_SOURCES = placeholder
+SPD_SOURCES =
+SPD_SOURCES += spd/lp5/set-0/spd-1.hex      # ID = 0(0b0000)  Parts = MT62F512M32D2DR-031 WT:B
+SPD_SOURCES += spd/lp5/set-0/spd-7.hex      # ID = 1(0b0001)  Parts = MT62F1G32D2DS-026 WT:B, H58G56BK7BX068
+SPD_SOURCES += spd/lp5/set-0/spd-8.hex      # ID = 2(0b0010)  Parts = MT62F2G32D4DS-026 WT:B
+SPD_SOURCES += spd/lp5/set-0/spd-9.hex      # ID = 3(0b0011)  Parts = K3KL6L60GM-MGCT
diff --git a/src/mainboard/google/rex/variants/ovis/memory/dram_id.generated.txt b/src/mainboard/google/rex/variants/ovis/memory/dram_id.generated.txt
index b243b02bf0..8e847883f4 100644
--- a/src/mainboard/google/rex/variants/ovis/memory/dram_id.generated.txt
+++ b/src/mainboard/google/rex/variants/ovis/memory/dram_id.generated.txt
@@ -1,3 +1,11 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
+# This is an auto-generated file. Do not edit!!
+# Generated by:
+# ./util/spd_tools/bin/part_id_gen MTL lp5 src/mainboard/google/rex/variants/ovis/memory src/mainboard/google/rex/variants/ovis/memory/mem_parts_used.txt
 
 DRAM Part Name                 ID to assign
+MT62F512M32D2DR-031 WT:B       0 (0000)
+MT62F1G32D2DS-026 WT:B         1 (0001)
+MT62F2G32D4DS-026 WT:B         2 (0010)
+H58G56BK7BX068                 1 (0001)
+K3KL6L60GM-MGCT                3 (0011)
diff --git a/src/mainboard/google/rex/variants/ovis/memory/mem_parts_used.txt b/src/mainboard/google/rex/variants/ovis/memory/mem_parts_used.txt
index 96211370d9..c952558ebb 100644
--- a/src/mainboard/google/rex/variants/ovis/memory/mem_parts_used.txt
+++ b/src/mainboard/google/rex/variants/ovis/memory/mem_parts_used.txt
@@ -9,3 +9,8 @@
 # See util/spd_tools/README.md for more details and instructions.
 
 # Part Name
+MT62F512M32D2DR-031 WT:B
+MT62F1G32D2DS-026 WT:B
+MT62F2G32D4DS-026 WT:B
+H58G56BK7BX068
+K3KL6L60GM-MGCT