6 files changed, 12 insertions, 0 deletions
diff --git a/src/drivers/soundwire/alc1308/Kconfig b/src/drivers/soundwire/alc1308/Kconfig
index c2e97313c1..edefe94c6e 100644
--- a/src/drivers/soundwire/alc1308/Kconfig
+++ b/src/drivers/soundwire/alc1308/Kconfig
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 config DRIVERS_SOUNDWIRE_ALC1308
 	bool
diff --git a/src/drivers/soundwire/alc5682/Kconfig b/src/drivers/soundwire/alc5682/Kconfig
index 5d68c38b59..3b9604f471 100644
--- a/src/drivers/soundwire/alc5682/Kconfig
+++ b/src/drivers/soundwire/alc5682/Kconfig
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 config DRIVERS_SOUNDWIRE_ALC5682
 	bool
diff --git a/src/drivers/soundwire/alc711/Kconfig b/src/drivers/soundwire/alc711/Kconfig
index bdc02a9324..0d96fa96bb 100644
--- a/src/drivers/soundwire/alc711/Kconfig
+++ b/src/drivers/soundwire/alc711/Kconfig
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 config DRIVERS_SOUNDWIRE_ALC711
 	bool
diff --git a/src/drivers/soundwire/cs42l42/Kconfig b/src/drivers/soundwire/cs42l42/Kconfig
index c980a3eeef..8352db6f5d 100644
--- a/src/drivers/soundwire/cs42l42/Kconfig
+++ b/src/drivers/soundwire/cs42l42/Kconfig
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 config DRIVERS_SOUNDWIRE_CS42L42
 	bool
 	depends on HAVE_ACPI_TABLES
diff --git a/src/drivers/soundwire/max98363/Kconfig b/src/drivers/soundwire/max98363/Kconfig
index 3474d08e75..e50ef6240c 100644
--- a/src/drivers/soundwire/max98363/Kconfig
+++ b/src/drivers/soundwire/max98363/Kconfig
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 config DRIVERS_SOUNDWIRE_MAX98363
 	bool
 	depends on HAVE_ACPI_TABLES
diff --git a/src/drivers/soundwire/max98373/Kconfig b/src/drivers/soundwire/max98373/Kconfig
index 0dc2c6116d..1324d693cc 100644
--- a/src/drivers/soundwire/max98373/Kconfig
+++ b/src/drivers/soundwire/max98373/Kconfig
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 config DRIVERS_SOUNDWIRE_MAX98373
 	bool