mb/system76: Add SPDX ID to devicetree files

Change-Id: I55f2730f7277a3c699b86ded5864e9690d92d518
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82700
Reviewed-by: Jeremy Soller <jeremy@system76.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

47 files changed, 94 insertions, 0 deletions

diff --git a/src/mainboard/system76/addw1/devicetree.cb b/src/mainboard/system76/addw1/devicetree.cb
index 529767c568..16827ddb6f 100644
--- a/src/mainboard/system76/addw1/devicetree.cb
+++ b/src/mainboard/system76/addw1/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/addw1/variants/addw1/overridetree.cb b/src/mainboard/system76/addw1/variants/addw1/overridetree.cb
index fa327fd1ad..b1fab297f7 100644
--- a/src/mainboard/system76/addw1/variants/addw1/overridetree.cb
+++ b/src/mainboard/system76/addw1/variants/addw1/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	# Serial I/O
 	register "SerialIoDevMode" = "{
diff --git a/src/mainboard/system76/addw1/variants/addw2/overridetree.cb b/src/mainboard/system76/addw1/variants/addw2/overridetree.cb
index 40e2128db3..3b9c5627cf 100644
--- a/src/mainboard/system76/addw1/variants/addw2/overridetree.cb
+++ b/src/mainboard/system76/addw1/variants/addw2/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	# Serial I/O
 	register "SerialIoDevMode" = "{
diff --git a/src/mainboard/system76/adl/devicetree.cb b/src/mainboard/system76/adl/devicetree.cb
index 9a7841506c..9a7a14963a 100644
--- a/src/mainboard/system76/adl/devicetree.cb
+++ b/src/mainboard/system76/adl/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/adl/variants/darp8/overridetree.cb b/src/mainboard/system76/adl/variants/darp8/overridetree.cb
index 73d016f17d..7a7e14ee99 100644
--- a/src/mainboard/system76/adl/variants/darp8/overridetree.cb
+++ b/src/mainboard/system76/adl/variants/darp8/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "power_limits_config[ADL_P_282_442_482_28W_CORE]" = "{
 		.tdp_pl1_override = 20,
diff --git a/src/mainboard/system76/adl/variants/galp6/overridetree.cb b/src/mainboard/system76/adl/variants/galp6/overridetree.cb
index a0a0ad26cf..79c614e761 100644
--- a/src/mainboard/system76/adl/variants/galp6/overridetree.cb
+++ b/src/mainboard/system76/adl/variants/galp6/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "power_limits_config[ADL_P_282_442_482_28W_CORE]" = "{
 		.tdp_pl1_override = 28,
diff --git a/src/mainboard/system76/adl/variants/gaze17-3050/overridetree.cb b/src/mainboard/system76/adl/variants/gaze17-3050/overridetree.cb
index 960ead6e5c..603879bb8b 100644
--- a/src/mainboard/system76/adl/variants/gaze17-3050/overridetree.cb
+++ b/src/mainboard/system76/adl/variants/gaze17-3050/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	# FIVR configuration
 	#   Read EXT_RAIL_CONFIG to determine bitmaps
diff --git a/src/mainboard/system76/adl/variants/gaze17-3060-b/overridetree.cb b/src/mainboard/system76/adl/variants/gaze17-3060-b/overridetree.cb
index 74b87ee60e..a9c614e424 100644
--- a/src/mainboard/system76/adl/variants/gaze17-3060-b/overridetree.cb
+++ b/src/mainboard/system76/adl/variants/gaze17-3060-b/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	# FIVR configuration
 	#   Read EXT_RAIL_CONFIG to determine bitmaps
diff --git a/src/mainboard/system76/adl/variants/lemp11/overridetree.cb b/src/mainboard/system76/adl/variants/lemp11/overridetree.cb
index 1e652483a9..10c6bfcf31 100644
--- a/src/mainboard/system76/adl/variants/lemp11/overridetree.cb
+++ b/src/mainboard/system76/adl/variants/lemp11/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "power_limits_config[ADL_P_142_242_282_15W_CORE]" = "{
 		.tdp_pl1_override = 15,
diff --git a/src/mainboard/system76/adl/variants/oryp10/overridetree.cb b/src/mainboard/system76/adl/variants/oryp10/overridetree.cb
index efebe7af91..09f07b6cce 100644
--- a/src/mainboard/system76/adl/variants/oryp10/overridetree.cb
+++ b/src/mainboard/system76/adl/variants/oryp10/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "power_limits_config[ADL_P_642_682_45W_CORE]" = "{
 		.tdp_pl1_override = 45,
diff --git a/src/mainboard/system76/adl/variants/oryp9/overridetree.cb b/src/mainboard/system76/adl/variants/oryp9/overridetree.cb
index 2f79c9edeb..4ca81ab12b 100644
--- a/src/mainboard/system76/adl/variants/oryp9/overridetree.cb
+++ b/src/mainboard/system76/adl/variants/oryp9/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "power_limits_config[ADL_P_642_682_45W_CORE]" = "{
 		.tdp_pl1_override = 45,
diff --git a/src/mainboard/system76/bonw14/devicetree.cb b/src/mainboard/system76/bonw14/devicetree.cb
index d79aa76659..aa7d1abb5e 100644
--- a/src/mainboard/system76/bonw14/devicetree.cb
+++ b/src/mainboard/system76/bonw14/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/cml-u/devicetree.cb b/src/mainboard/system76/cml-u/devicetree.cb
index 90c5b719b0..07c56b4b9f 100644
--- a/src/mainboard/system76/cml-u/devicetree.cb
+++ b/src/mainboard/system76/cml-u/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	register "common_soc_config" = "{
 		/* Touchpad */
diff --git a/src/mainboard/system76/cml-u/variants/darp6/overridetree.cb b/src/mainboard/system76/cml-u/variants/darp6/overridetree.cb
index b34976201c..17b1ba14f8 100644
--- a/src/mainboard/system76/cml-u/variants/darp6/overridetree.cb
+++ b/src/mainboard/system76/cml-u/variants/darp6/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	device domain 0 on
 		subsystemid 0x1558 0x1404 inherit
diff --git a/src/mainboard/system76/cml-u/variants/galp4/overridetree.cb b/src/mainboard/system76/cml-u/variants/galp4/overridetree.cb
index bbfc2ea208..9c747cf180 100644
--- a/src/mainboard/system76/cml-u/variants/galp4/overridetree.cb
+++ b/src/mainboard/system76/cml-u/variants/galp4/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	device domain 0 on
 		subsystemid 0x1558 0x1403 inherit
diff --git a/src/mainboard/system76/cml-u/variants/lemp9/overridetree.cb b/src/mainboard/system76/cml-u/variants/lemp9/overridetree.cb
index 164774a42d..2279cb33cb 100644
--- a/src/mainboard/system76/cml-u/variants/lemp9/overridetree.cb
+++ b/src/mainboard/system76/cml-u/variants/lemp9/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	device domain 0 on
 		subsystemid 0x1558 0x1401 inherit
diff --git a/src/mainboard/system76/gaze15/devicetree.cb b/src/mainboard/system76/gaze15/devicetree.cb
index 4ae412d155..f80c45c0ba 100644
--- a/src/mainboard/system76/gaze15/devicetree.cb
+++ b/src/mainboard/system76/gaze15/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/gaze15/variants/gaze14/overridetree.cb b/src/mainboard/system76/gaze15/variants/gaze14/overridetree.cb
index 0cfd040a73..e94d703a19 100644
--- a/src/mainboard/system76/gaze15/variants/gaze14/overridetree.cb
+++ b/src/mainboard/system76/gaze15/variants/gaze14/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	# Serial I/O
 	register "SerialIoDevMode" = "{
diff --git a/src/mainboard/system76/gaze15/variants/gaze15/overridetree.cb b/src/mainboard/system76/gaze15/variants/gaze15/overridetree.cb
index 9f64b5f4ca..02275df10b 100644
--- a/src/mainboard/system76/gaze15/variants/gaze15/overridetree.cb
+++ b/src/mainboard/system76/gaze15/variants/gaze15/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	# Serial I/O
 	register "SerialIoDevMode" = "{
diff --git a/src/mainboard/system76/kbl-u/devicetree.cb b/src/mainboard/system76/kbl-u/devicetree.cb
index 3b84d7fdbf..da3327ac4c 100644
--- a/src/mainboard/system76/kbl-u/devicetree.cb
+++ b/src/mainboard/system76/kbl-u/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/skylake
 	# Send an extra VR mailbox command for the PS4 exit issue
 	register "SendVrMbxCmd" = "2"
diff --git a/src/mainboard/system76/kbl-u/variants/galp2/overridetree.cb b/src/mainboard/system76/kbl-u/variants/galp2/overridetree.cb
index 9e042a335b..8fb495bec9 100644
--- a/src/mainboard/system76/kbl-u/variants/galp2/overridetree.cb
+++ b/src/mainboard/system76/kbl-u/variants/galp2/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/skylake
 	device domain 0 on
 		subsystemid 0x1558 0x1303 inherit
diff --git a/src/mainboard/system76/kbl-u/variants/galp3-b/overridetree.cb b/src/mainboard/system76/kbl-u/variants/galp3-b/overridetree.cb
index 134fbec7a7..5cc90b269d 100644
--- a/src/mainboard/system76/kbl-u/variants/galp3-b/overridetree.cb
+++ b/src/mainboard/system76/kbl-u/variants/galp3-b/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/skylake
 	device domain 0 on
 		subsystemid 0x1558 0x1413 inherit
diff --git a/src/mainboard/system76/kbl-u/variants/galp3/overridetree.cb b/src/mainboard/system76/kbl-u/variants/galp3/overridetree.cb
index 8a61f28069..d18dfa449e 100644
--- a/src/mainboard/system76/kbl-u/variants/galp3/overridetree.cb
+++ b/src/mainboard/system76/kbl-u/variants/galp3/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/skylake
 	device domain 0 on
 		subsystemid 0x1558 0x1313 inherit
diff --git a/src/mainboard/system76/oryp5/devicetree.cb b/src/mainboard/system76/oryp5/devicetree.cb
index f17862f4af..ae521655cc 100644
--- a/src/mainboard/system76/oryp5/devicetree.cb
+++ b/src/mainboard/system76/oryp5/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/oryp6/devicetree.cb b/src/mainboard/system76/oryp6/devicetree.cb
index c0c1b4a12a..abf68b9e16 100644
--- a/src/mainboard/system76/oryp6/devicetree.cb
+++ b/src/mainboard/system76/oryp6/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/oryp6/variants/oryp6/overridetree.cb b/src/mainboard/system76/oryp6/variants/oryp6/overridetree.cb
index 3d6355e6b0..3b2748f69f 100644
--- a/src/mainboard/system76/oryp6/variants/oryp6/overridetree.cb
+++ b/src/mainboard/system76/oryp6/variants/oryp6/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	device domain 0 on
 		subsystemid 0x1558 0x50d3 inherit
diff --git a/src/mainboard/system76/oryp6/variants/oryp7/overridetree.cb b/src/mainboard/system76/oryp6/variants/oryp7/overridetree.cb
index 3be1b157f1..b9bb816b89 100644
--- a/src/mainboard/system76/oryp6/variants/oryp7/overridetree.cb
+++ b/src/mainboard/system76/oryp6/variants/oryp7/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	device domain 0 on
 		subsystemid 0x1558 0x65e5 inherit
diff --git a/src/mainboard/system76/rpl/devicetree.cb b/src/mainboard/system76/rpl/devicetree.cb
index 4fd50fdc4c..749ce5344b 100644
--- a/src/mainboard/system76/rpl/devicetree.cb
+++ b/src/mainboard/system76/rpl/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/rpl/variants/addw3/overridetree.cb b/src/mainboard/system76/rpl/variants/addw3/overridetree.cb
index 9b8d4533f1..24c272c746 100644
--- a/src/mainboard/system76/rpl/variants/addw3/overridetree.cb
+++ b/src/mainboard/system76/rpl/variants/addw3/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	# Support 5600 MT/s memory
 	register "max_dram_speed_mts" = "5600"
diff --git a/src/mainboard/system76/rpl/variants/bonw15/overridetree.cb b/src/mainboard/system76/rpl/variants/bonw15/overridetree.cb
index fde40f6245..a1191a5434 100644
--- a/src/mainboard/system76/rpl/variants/bonw15/overridetree.cb
+++ b/src/mainboard/system76/rpl/variants/bonw15/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	# Support 5600 MT/s memory
 	register "max_dram_speed_mts" = "5600"
diff --git a/src/mainboard/system76/rpl/variants/darp9/overridetree.cb b/src/mainboard/system76/rpl/variants/darp9/overridetree.cb
index fc9b49a29b..3dc27864fe 100644
--- a/src/mainboard/system76/rpl/variants/darp9/overridetree.cb
+++ b/src/mainboard/system76/rpl/variants/darp9/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "power_limits_config[RPL_P_682_482_282_28W_CORE]" = "{
 		.tdp_pl1_override = 20,
diff --git a/src/mainboard/system76/rpl/variants/galp7/overridetree.cb b/src/mainboard/system76/rpl/variants/galp7/overridetree.cb
index 0c0aec3071..cc060e44b1 100644
--- a/src/mainboard/system76/rpl/variants/galp7/overridetree.cb
+++ b/src/mainboard/system76/rpl/variants/galp7/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "power_limits_config[RPL_P_682_642_482_45W_CORE]" = "{
 		.tdp_pl1_override = 45,
diff --git a/src/mainboard/system76/rpl/variants/gaze18/overridetree.cb b/src/mainboard/system76/rpl/variants/gaze18/overridetree.cb
index 4c115950d0..636d57cadd 100644
--- a/src/mainboard/system76/rpl/variants/gaze18/overridetree.cb
+++ b/src/mainboard/system76/rpl/variants/gaze18/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	device domain 0 on
 		subsystemid 0x1558 0x5630 inherit
diff --git a/src/mainboard/system76/rpl/variants/lemp12/overridetree.cb b/src/mainboard/system76/rpl/variants/lemp12/overridetree.cb
index 34950cc3c6..c84628b6ac 100644
--- a/src/mainboard/system76/rpl/variants/lemp12/overridetree.cb
+++ b/src/mainboard/system76/rpl/variants/lemp12/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	register "power_limits_config[RPL_P_282_242_142_15W_CORE]" = "{
 		.tdp_pl1_override = 15,
diff --git a/src/mainboard/system76/rpl/variants/oryp11/overridetree.cb b/src/mainboard/system76/rpl/variants/oryp11/overridetree.cb
index d337a572a5..57bc59468c 100644
--- a/src/mainboard/system76/rpl/variants/oryp11/overridetree.cb
+++ b/src/mainboard/system76/rpl/variants/oryp11/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	device domain 0 on
 		subsystemid 0x1558 0x66a2 inherit
diff --git a/src/mainboard/system76/rpl/variants/serw13/overridetree.cb b/src/mainboard/system76/rpl/variants/serw13/overridetree.cb
index b261d5923c..cc89764c7f 100644
--- a/src/mainboard/system76/rpl/variants/serw13/overridetree.cb
+++ b/src/mainboard/system76/rpl/variants/serw13/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/alderlake
 	# Support 5600 MT/s memory
 	register "max_dram_speed_mts" = "5600"
diff --git a/src/mainboard/system76/tgl-h/devicetree.cb b/src/mainboard/system76/tgl-h/devicetree.cb
index 353a96d329..11b85ced15 100644
--- a/src/mainboard/system76/tgl-h/devicetree.cb
+++ b/src/mainboard/system76/tgl-h/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/tigerlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/tgl-h/variants/gaze16-3050/overridetree.cb b/src/mainboard/system76/tgl-h/variants/gaze16-3050/overridetree.cb
index ad90eabfee..6ac474d0d1 100644
--- a/src/mainboard/system76/tgl-h/variants/gaze16-3050/overridetree.cb
+++ b/src/mainboard/system76/tgl-h/variants/gaze16-3050/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/tigerlake
 	device domain 0 on
 		subsystemid 0x1558 0x5015 inherit
diff --git a/src/mainboard/system76/tgl-h/variants/gaze16-3060/overridetree.cb b/src/mainboard/system76/tgl-h/variants/gaze16-3060/overridetree.cb
index bfbc5c5090..b4b62faa62 100644
--- a/src/mainboard/system76/tgl-h/variants/gaze16-3060/overridetree.cb
+++ b/src/mainboard/system76/tgl-h/variants/gaze16-3060/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/tigerlake
 	device domain 0 on
 		subsystemid 0x1558 0x50e1 inherit
diff --git a/src/mainboard/system76/tgl-h/variants/oryp8/overridetree.cb b/src/mainboard/system76/tgl-h/variants/oryp8/overridetree.cb
index a09cf30cad..0967154c6b 100644
--- a/src/mainboard/system76/tgl-h/variants/oryp8/overridetree.cb
+++ b/src/mainboard/system76/tgl-h/variants/oryp8/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/tigerlake
 	# Power limits
 	register "power_limits_config[POWER_LIMITS_H_8_CORE]" = "{
diff --git a/src/mainboard/system76/tgl-u/devicetree.cb b/src/mainboard/system76/tgl-u/devicetree.cb
index f056da7715..ae80a324e2 100644
--- a/src/mainboard/system76/tgl-u/devicetree.cb
+++ b/src/mainboard/system76/tgl-u/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/tigerlake
 	register "common_soc_config" = "{
 		// Touchpad I2C bus
diff --git a/src/mainboard/system76/tgl-u/variants/darp7/overridetree.cb b/src/mainboard/system76/tgl-u/variants/darp7/overridetree.cb
index a35dc52ab9..b263c5ab73 100644
--- a/src/mainboard/system76/tgl-u/variants/darp7/overridetree.cb
+++ b/src/mainboard/system76/tgl-u/variants/darp7/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/tigerlake
 	# Power limits
 	register "power_limits_config[POWER_LIMITS_U_4_CORE]" = "{
diff --git a/src/mainboard/system76/tgl-u/variants/galp5/overridetree.cb b/src/mainboard/system76/tgl-u/variants/galp5/overridetree.cb
index 075a2e44ab..7cfc62bb3d 100644
--- a/src/mainboard/system76/tgl-u/variants/galp5/overridetree.cb
+++ b/src/mainboard/system76/tgl-u/variants/galp5/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/tigerlake
 	# Power limits
 	register "power_limits_config[POWER_LIMITS_U_4_CORE]" = "{
diff --git a/src/mainboard/system76/tgl-u/variants/lemp10/overridetree.cb b/src/mainboard/system76/tgl-u/variants/lemp10/overridetree.cb
index ce4507900e..a4e3052367 100644
--- a/src/mainboard/system76/tgl-u/variants/lemp10/overridetree.cb
+++ b/src/mainboard/system76/tgl-u/variants/lemp10/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/tigerlake
 	# Power limits
 	register "power_limits_config[POWER_LIMITS_U_4_CORE]" = "{
diff --git a/src/mainboard/system76/whl-u/devicetree.cb b/src/mainboard/system76/whl-u/devicetree.cb
index 0899f624ec..6607f45ae9 100644
--- a/src/mainboard/system76/whl-u/devicetree.cb
+++ b/src/mainboard/system76/whl-u/devicetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	# Lock Down
 	register "common_soc_config" = "{
diff --git a/src/mainboard/system76/whl-u/variants/darp5/overridetree.cb b/src/mainboard/system76/whl-u/variants/darp5/overridetree.cb
index b9c9de7c2b..c72111ae12 100644
--- a/src/mainboard/system76/whl-u/variants/darp5/overridetree.cb
+++ b/src/mainboard/system76/whl-u/variants/darp5/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	device domain 0 on
 		subsystemid 0x1558 0x1325 inherit
diff --git a/src/mainboard/system76/whl-u/variants/galp3-c/overridetree.cb b/src/mainboard/system76/whl-u/variants/galp3-c/overridetree.cb
index 022be95787..4556940d3e 100644
--- a/src/mainboard/system76/whl-u/variants/galp3-c/overridetree.cb
+++ b/src/mainboard/system76/whl-u/variants/galp3-c/overridetree.cb
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/intel/cannonlake
 	device domain 0 on
 		subsystemid 0x1558 0x1323 inherit