boards: Rename .dts -> .dtsi where appropriate

DTS files which are only used as includes should have the proper suffix
according to spec. A .dts file is expected to contain a full devicetree
with a root node and a `/dts-v1/;` tag, at least after preprocessing.

For every board, ensure that the names of DTS includes end with ".dtsi",
and update the relevant references.

Signed-off-by: Grzegorz Swiderski <grzegorz.swiderski@nordicsemi.no>
diff --git a/boards/arm/actinius_icarus/actinius_icarus.dts b/boards/arm/actinius_icarus/actinius_icarus.dts
index 7566929..5bce37e 100644
--- a/boards/arm/actinius_icarus/actinius_icarus.dts
+++ b/boards/arm/actinius_icarus/actinius_icarus.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "actinius_icarus_common.dts"
+#include "actinius_icarus_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/actinius_icarus/actinius_icarus_common.dts b/boards/arm/actinius_icarus/actinius_icarus_common.dtsi
similarity index 98%
rename from boards/arm/actinius_icarus/actinius_icarus_common.dts
rename to boards/arm/actinius_icarus/actinius_icarus_common.dtsi
index 65bb762..6673e23 100644
--- a/boards/arm/actinius_icarus/actinius_icarus_common.dts
+++ b/boards/arm/actinius_icarus/actinius_icarus_common.dtsi
@@ -222,4 +222,4 @@
 #include "feather_connector.dtsi"
 
 /* Include partition configuration file */
-#include "actinius_icarus_partition_conf.dts"
+#include "actinius_icarus_partition_conf.dtsi"
diff --git a/boards/arm/actinius_icarus/actinius_icarus_ns.dts b/boards/arm/actinius_icarus/actinius_icarus_ns.dts
index 86a99b9..1401706 100644
--- a/boards/arm/actinius_icarus/actinius_icarus_ns.dts
+++ b/boards/arm/actinius_icarus/actinius_icarus_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "actinius_icarus_common.dts"
+#include "actinius_icarus_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/actinius_icarus/actinius_icarus_partition_conf.dts b/boards/arm/actinius_icarus/actinius_icarus_partition_conf.dtsi
similarity index 100%
rename from boards/arm/actinius_icarus/actinius_icarus_partition_conf.dts
rename to boards/arm/actinius_icarus/actinius_icarus_partition_conf.dtsi
diff --git a/boards/arm/actinius_icarus_bee/actinius_icarus_bee.dts b/boards/arm/actinius_icarus_bee/actinius_icarus_bee.dts
index 98d70fc..df6ce09 100644
--- a/boards/arm/actinius_icarus_bee/actinius_icarus_bee.dts
+++ b/boards/arm/actinius_icarus_bee/actinius_icarus_bee.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "actinius_icarus_bee_common.dts"
+#include "actinius_icarus_bee_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/actinius_icarus_bee/actinius_icarus_bee_common.dts b/boards/arm/actinius_icarus_bee/actinius_icarus_bee_common.dtsi
similarity index 98%
rename from boards/arm/actinius_icarus_bee/actinius_icarus_bee_common.dts
rename to boards/arm/actinius_icarus_bee/actinius_icarus_bee_common.dtsi
index a12c851..2e13b3a 100644
--- a/boards/arm/actinius_icarus_bee/actinius_icarus_bee_common.dts
+++ b/boards/arm/actinius_icarus_bee/actinius_icarus_bee_common.dtsi
@@ -210,4 +210,4 @@
 };
 
 /* Include partition configuration file */
-#include "actinius_icarus_bee_partition_conf.dts"
+#include "actinius_icarus_bee_partition_conf.dtsi"
diff --git a/boards/arm/actinius_icarus_bee/actinius_icarus_bee_ns.dts b/boards/arm/actinius_icarus_bee/actinius_icarus_bee_ns.dts
index 2f48d68..b9d1493 100644
--- a/boards/arm/actinius_icarus_bee/actinius_icarus_bee_ns.dts
+++ b/boards/arm/actinius_icarus_bee/actinius_icarus_bee_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "actinius_icarus_bee_common.dts"
+#include "actinius_icarus_bee_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/actinius_icarus_bee/actinius_icarus_bee_partition_conf.dts b/boards/arm/actinius_icarus_bee/actinius_icarus_bee_partition_conf.dtsi
similarity index 100%
rename from boards/arm/actinius_icarus_bee/actinius_icarus_bee_partition_conf.dts
rename to boards/arm/actinius_icarus_bee/actinius_icarus_bee_partition_conf.dtsi
diff --git a/boards/arm/actinius_icarus_som/actinius_icarus_som.dts b/boards/arm/actinius_icarus_som/actinius_icarus_som.dts
index 8783066..17dfa21 100644
--- a/boards/arm/actinius_icarus_som/actinius_icarus_som.dts
+++ b/boards/arm/actinius_icarus_som/actinius_icarus_som.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "actinius_icarus_som_common.dts"
+#include "actinius_icarus_som_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/actinius_icarus_som/actinius_icarus_som_common.dts b/boards/arm/actinius_icarus_som/actinius_icarus_som_common.dtsi
similarity index 97%
rename from boards/arm/actinius_icarus_som/actinius_icarus_som_common.dts
rename to boards/arm/actinius_icarus_som/actinius_icarus_som_common.dtsi
index 23303c9..46f5f5a 100644
--- a/boards/arm/actinius_icarus_som/actinius_icarus_som_common.dts
+++ b/boards/arm/actinius_icarus_som/actinius_icarus_som_common.dtsi
@@ -120,4 +120,4 @@
 };
 
 /* Include partition configuration file */
-#include "actinius_icarus_som_partition_conf.dts"
+#include "actinius_icarus_som_partition_conf.dtsi"
diff --git a/boards/arm/actinius_icarus_som/actinius_icarus_som_ns.dts b/boards/arm/actinius_icarus_som/actinius_icarus_som_ns.dts
index 6bf978a..4ae2ca1 100644
--- a/boards/arm/actinius_icarus_som/actinius_icarus_som_ns.dts
+++ b/boards/arm/actinius_icarus_som/actinius_icarus_som_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "actinius_icarus_som_common.dts"
+#include "actinius_icarus_som_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/actinius_icarus_som/actinius_icarus_som_partition_conf.dts b/boards/arm/actinius_icarus_som/actinius_icarus_som_partition_conf.dtsi
similarity index 100%
rename from boards/arm/actinius_icarus_som/actinius_icarus_som_partition_conf.dts
rename to boards/arm/actinius_icarus_som/actinius_icarus_som_partition_conf.dtsi
diff --git a/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk.dts b/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk.dts
index 803feaa..ad00ae6 100644
--- a/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk.dts
+++ b/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "actinius_icarus_som_dk_common.dts"
+#include "actinius_icarus_som_dk_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_common.dts b/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_common.dtsi
similarity index 98%
rename from boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_common.dts
rename to boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_common.dtsi
index 6a97ac1..13e8637 100644
--- a/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_common.dts
+++ b/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_common.dtsi
@@ -212,4 +212,4 @@
 #include "arduino_connector.dtsi"
 
 /* Include partition configuration file */
-#include "actinius_icarus_som_dk_partition_conf.dts"
+#include "actinius_icarus_som_dk_partition_conf.dtsi"
diff --git a/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_ns.dts b/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_ns.dts
index 8ada6bc..3fef59b 100644
--- a/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_ns.dts
+++ b/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "actinius_icarus_som_dk_common.dts"
+#include "actinius_icarus_som_dk_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_partition_conf.dts b/boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_partition_conf.dtsi
similarity index 100%
rename from boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_partition_conf.dts
rename to boards/arm/actinius_icarus_som_dk/actinius_icarus_som_dk_partition_conf.dtsi
diff --git a/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp.dts b/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp.dts
index 1ce826a..12528e1 100644
--- a/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp.dts
+++ b/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf5340_cpuapp_qkaa.dtsi>
-#include "bl5340_dvk_cpuapp_common.dts"
+#include "bl5340_dvk_cpuapp_common.dtsi"
 
 / {
 	model = "Laird Connectivity BL5340 (nRF5340) Application";
diff --git a/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_common.dts b/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_common.dtsi
similarity index 98%
rename from boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_common.dts
rename to boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_common.dtsi
index 9eb5d45..d47034b 100644
--- a/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_common.dts
+++ b/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_common.dtsi
@@ -354,4 +354,4 @@
 };
 
 /* Include partition configuration file */
-#include "bl5340_dvk_cpuapp_partition_conf.dts"
+#include "bl5340_dvk_cpuapp_partition_conf.dtsi"
diff --git a/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_ns.dts b/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_ns.dts
index f05e236..cfa5b76 100644
--- a/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_ns.dts
+++ b/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf5340_cpuappns_qkaa.dtsi>
-#include "bl5340_dvk_cpuapp_common.dts"
+#include "bl5340_dvk_cpuapp_common.dtsi"
 
 / {
 	model = "Laird Connectivity BL5340 (nRF5340) Application";
diff --git a/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_partition_conf.dts b/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_partition_conf.dtsi
similarity index 92%
rename from boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_partition_conf.dts
rename to boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_partition_conf.dtsi
index 3b3e348..b9bd8c7 100644
--- a/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_partition_conf.dts
+++ b/boards/arm/bl5340_dvk/bl5340_dvk_cpuapp_partition_conf.dtsi
@@ -43,7 +43,7 @@
  * - Lowest 256 kB SRAM allocated to Secure image (sram0_s)
  * - Middle 192 kB allocated to Non-Secure image (sram0_ns)
  * - Upper 64 kB SRAM allocated as Shared memory (sram0_shared)
- *   (see bl5340_dvk_shared_sram_planning_conf.dts)
+ *   (see bl5340_dvk_shared_sram_planning_conf.dtsi)
  */
 &sram0_image {
 	reg = <0x20000000 DT_SIZE_K(448)>;
@@ -58,4 +58,4 @@
 };
 
 /* Include shared RAM configuration file */
-#include "bl5340_dvk_shared_sram_planning_conf.dts"
+#include "bl5340_dvk_shared_sram_planning_conf.dtsi"
diff --git a/boards/arm/bl5340_dvk/bl5340_dvk_cpunet.dts b/boards/arm/bl5340_dvk/bl5340_dvk_cpunet.dts
index 67b80ed..0cacac7 100644
--- a/boards/arm/bl5340_dvk/bl5340_dvk_cpunet.dts
+++ b/boards/arm/bl5340_dvk/bl5340_dvk_cpunet.dts
@@ -7,7 +7,7 @@
 /dts-v1/;
 #include <nordic/nrf5340_cpunet_qkaa.dtsi>
 #include "bl5340_dvk_cpunet-pinctrl.dtsi"
-#include "bl5340_dvk_cpunet_common.dts"
+#include "bl5340_dvk_cpunet_common.dtsi"
 
 / {
 	model = "Laird Connectivity BL5340 (nRF5340) Network";
diff --git a/boards/arm/bl5340_dvk/bl5340_dvk_cpunet_common.dts b/boards/arm/bl5340_dvk/bl5340_dvk_cpunet_common.dtsi
similarity index 94%
rename from boards/arm/bl5340_dvk/bl5340_dvk_cpunet_common.dts
rename to boards/arm/bl5340_dvk/bl5340_dvk_cpunet_common.dtsi
index d3853f3..b7bb765 100644
--- a/boards/arm/bl5340_dvk/bl5340_dvk_cpunet_common.dts
+++ b/boards/arm/bl5340_dvk/bl5340_dvk_cpunet_common.dtsi
@@ -64,4 +64,4 @@
 };
 
 /* Include shared RAM configuration file */
-#include "bl5340_dvk_shared_sram_planning_conf.dts"
+#include "bl5340_dvk_shared_sram_planning_conf.dtsi"
diff --git a/boards/arm/bl5340_dvk/bl5340_dvk_shared_sram_planning_conf.dts b/boards/arm/bl5340_dvk/bl5340_dvk_shared_sram_planning_conf.dtsi
similarity index 100%
rename from boards/arm/bl5340_dvk/bl5340_dvk_shared_sram_planning_conf.dts
rename to boards/arm/bl5340_dvk/bl5340_dvk_shared_sram_planning_conf.dtsi
diff --git a/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160.dts b/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160.dts
index 07a0477..8cb4679 100644
--- a/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160.dts
+++ b/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160.dts
@@ -7,7 +7,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "circuitdojo_feather_nrf9160_common.dts"
+#include "circuitdojo_feather_nrf9160_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dts b/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dtsi
similarity index 98%
rename from boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dts
rename to boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dtsi
index 44c483f..8b6e0e5 100644
--- a/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dts
+++ b/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dtsi
@@ -237,4 +237,4 @@
 };
 
 /* Include partition configuration file */
-#include "circuitdojo_feather_nrf9160_partition_conf.dts"
+#include "circuitdojo_feather_nrf9160_partition_conf.dtsi"
diff --git a/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_ns.dts b/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_ns.dts
index 5a0df90..3455247 100644
--- a/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_ns.dts
+++ b/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_ns.dts
@@ -7,7 +7,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "circuitdojo_feather_nrf9160_common.dts"
+#include "circuitdojo_feather_nrf9160_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_partition_conf.dts b/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_partition_conf.dtsi
similarity index 100%
rename from boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_partition_conf.dts
rename to boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_partition_conf.dtsi
diff --git a/boards/arm/circuitdojo_feather_nrf9160/doc/index.rst b/boards/arm/circuitdojo_feather_nrf9160/doc/index.rst
index 1257868..f6fcb2a 100644
--- a/boards/arm/circuitdojo_feather_nrf9160/doc/index.rst
+++ b/boards/arm/circuitdojo_feather_nrf9160/doc/index.rst
@@ -147,7 +147,7 @@
 
 You can build and flash the examples to make sure Zephyr is running correctly on
 your board. The button and LED definitions can be found in
-:zephyr_file:`boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dts`.
+:zephyr_file:`boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dtsi`.
 
 References
 **********
diff --git a/boards/arm/nrf52840_mdk_usb_dongle/fstab-debugger.dts b/boards/arm/nrf52840_mdk_usb_dongle/fstab-debugger.dtsi
similarity index 100%
rename from boards/arm/nrf52840_mdk_usb_dongle/fstab-debugger.dts
rename to boards/arm/nrf52840_mdk_usb_dongle/fstab-debugger.dtsi
diff --git a/boards/arm/nrf52840_mdk_usb_dongle/fstab-stock.dts b/boards/arm/nrf52840_mdk_usb_dongle/fstab-stock.dtsi
similarity index 100%
rename from boards/arm/nrf52840_mdk_usb_dongle/fstab-stock.dts
rename to boards/arm/nrf52840_mdk_usb_dongle/fstab-stock.dtsi
diff --git a/boards/arm/nrf52840_mdk_usb_dongle/nrf52840_mdk_usb_dongle.dts b/boards/arm/nrf52840_mdk_usb_dongle/nrf52840_mdk_usb_dongle.dts
index fde0a67..49fa833 100644
--- a/boards/arm/nrf52840_mdk_usb_dongle/nrf52840_mdk_usb_dongle.dts
+++ b/boards/arm/nrf52840_mdk_usb_dongle/nrf52840_mdk_usb_dongle.dts
@@ -111,7 +111,7 @@
  * fstab-stock		-compatible with Nordic nRF5 bootloader, default
  * fstab-debugger	-to use an external debugger, w/o the nRF5 bootloader
  */
-#include "fstab-stock.dts"
+#include "fstab-stock.dtsi"
 
 zephyr_udc0: &usbd {
 	compatible = "nordic,nrf-usbd";
diff --git a/boards/arm/nrf52840dongle_nrf52840/fstab-debugger.dts b/boards/arm/nrf52840dongle_nrf52840/fstab-debugger.dtsi
similarity index 100%
rename from boards/arm/nrf52840dongle_nrf52840/fstab-debugger.dts
rename to boards/arm/nrf52840dongle_nrf52840/fstab-debugger.dtsi
diff --git a/boards/arm/nrf52840dongle_nrf52840/fstab-stock.dts b/boards/arm/nrf52840dongle_nrf52840/fstab-stock.dtsi
similarity index 100%
rename from boards/arm/nrf52840dongle_nrf52840/fstab-stock.dts
rename to boards/arm/nrf52840dongle_nrf52840/fstab-stock.dtsi
diff --git a/boards/arm/nrf52840dongle_nrf52840/nrf52840dongle_nrf52840.dts b/boards/arm/nrf52840dongle_nrf52840/nrf52840dongle_nrf52840.dts
index ceb2e95..0d5d098 100644
--- a/boards/arm/nrf52840dongle_nrf52840/nrf52840dongle_nrf52840.dts
+++ b/boards/arm/nrf52840dongle_nrf52840/nrf52840dongle_nrf52840.dts
@@ -168,7 +168,7 @@
  * fstab-stock		-compatible with Nordic nRF5 bootloader, default
  * fstab-debugger	-to use an external debugger, w/o the nRF5 bootloader
  */
-#include "fstab-stock.dts"
+#include "fstab-stock.dtsi"
 
 zephyr_udc0: &usbd {
 	compatible = "nordic,nrf-usbd";
diff --git a/boards/arm/nrf5340dk_nrf5340/doc/index.rst b/boards/arm/nrf5340dk_nrf5340/doc/index.rst
index 5e5711b..196759a 100644
--- a/boards/arm/nrf5340dk_nrf5340/doc/index.rst
+++ b/boards/arm/nrf5340dk_nrf5340/doc/index.rst
@@ -315,7 +315,7 @@
 
 You can build and flash the examples to make sure Zephyr is running correctly on
 your board. The button and LED definitions can be found in
-:zephyr_file:`boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dts`.
+:zephyr_file:`boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dtsi`.
 
 References
 **********
diff --git a/boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dts b/boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dtsi
similarity index 98%
rename from boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dts
rename to boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dtsi
index 220256e..d7e9d38 100644
--- a/boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dts
+++ b/boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dtsi
@@ -279,4 +279,4 @@
 };
 
 /* Include partition configuration file */
-#include "nrf5340_cpuapp_partition_conf.dts"
+#include "nrf5340_cpuapp_partition_conf.dtsi"
diff --git a/boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_partition_conf.dts b/boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_partition_conf.dtsi
similarity index 92%
rename from boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_partition_conf.dts
rename to boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_partition_conf.dtsi
index 6bb55d3..07eadb8 100644
--- a/boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_partition_conf.dts
+++ b/boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_partition_conf.dtsi
@@ -42,7 +42,7 @@
  * - Lowest 256 kB SRAM allocated to Secure image (sram0_s)
  * - Middle 192 kB allocated to Non-Secure image (sram0_ns)
  * - Upper 64 kB SRAM allocated as Shared memory (sram0_shared)
- *   (see nrf5340_shared_sram_planning_conf.dts)
+ *   (see nrf5340_shared_sram_planning_conf.dtsi)
  */
 &sram0_image {
 	reg = <0x20000000 DT_SIZE_K(448)>;
@@ -57,4 +57,4 @@
 };
 
 /* Include shared RAM configuration file */
-#include "nrf5340_shared_sram_planning_conf.dts"
+#include "nrf5340_shared_sram_planning_conf.dtsi"
diff --git a/boards/arm/nrf5340dk_nrf5340/nrf5340_shared_sram_planning_conf.dts b/boards/arm/nrf5340dk_nrf5340/nrf5340_shared_sram_planning_conf.dtsi
similarity index 100%
rename from boards/arm/nrf5340dk_nrf5340/nrf5340_shared_sram_planning_conf.dts
rename to boards/arm/nrf5340dk_nrf5340/nrf5340_shared_sram_planning_conf.dtsi
diff --git a/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp.dts b/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp.dts
index da1091b..cf21413 100644
--- a/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp.dts
+++ b/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf5340_cpuapp_qkaa.dtsi>
-#include "nrf5340_cpuapp_common.dts"
+#include "nrf5340_cpuapp_common.dtsi"
 
 / {
 	model = "Nordic NRF5340 DK NRF5340 Application";
diff --git a/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp_ns.dts b/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp_ns.dts
index 5c6c685..14eb740 100644
--- a/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp_ns.dts
+++ b/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf5340_cpuappns_qkaa.dtsi>
-#include "nrf5340_cpuapp_common.dts"
+#include "nrf5340_cpuapp_common.dtsi"
 
 / {
 	model = "Nordic NRF5340 DK NRF5340 Application";
diff --git a/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpunet.dts b/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpunet.dts
index 61403bc..fe79f77 100644
--- a/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpunet.dts
+++ b/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpunet.dts
@@ -184,4 +184,4 @@
 };
 
 /* Include shared RAM configuration file */
-#include "nrf5340_shared_sram_planning_conf.dts"
+#include "nrf5340_shared_sram_planning_conf.dtsi"
diff --git a/boards/arm/nrf9160_innblue21/nrf9160_innblue21.dts b/boards/arm/nrf9160_innblue21/nrf9160_innblue21.dts
index 8f63dfe..af9e3a2 100644
--- a/boards/arm/nrf9160_innblue21/nrf9160_innblue21.dts
+++ b/boards/arm/nrf9160_innblue21/nrf9160_innblue21.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "nrf9160_innblue21_common.dts"
+#include "nrf9160_innblue21_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/nrf9160_innblue21/nrf9160_innblue21_common.dts b/boards/arm/nrf9160_innblue21/nrf9160_innblue21_common.dtsi
similarity index 98%
rename from boards/arm/nrf9160_innblue21/nrf9160_innblue21_common.dts
rename to boards/arm/nrf9160_innblue21/nrf9160_innblue21_common.dtsi
index 880f0ee..813ff57 100644
--- a/boards/arm/nrf9160_innblue21/nrf9160_innblue21_common.dts
+++ b/boards/arm/nrf9160_innblue21/nrf9160_innblue21_common.dtsi
@@ -204,4 +204,4 @@
 };
 
 /* Include partition configuration file */
-#include "nrf9160_innblue21_partition_conf.dts"
+#include "nrf9160_innblue21_partition_conf.dtsi"
diff --git a/boards/arm/nrf9160_innblue21/nrf9160_innblue21_ns.dts b/boards/arm/nrf9160_innblue21/nrf9160_innblue21_ns.dts
index ee9a99f..8343318 100644
--- a/boards/arm/nrf9160_innblue21/nrf9160_innblue21_ns.dts
+++ b/boards/arm/nrf9160_innblue21/nrf9160_innblue21_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "nrf9160_innblue21_common.dts"
+#include "nrf9160_innblue21_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/nrf9160_innblue21/nrf9160_innblue21_partition_conf.dts b/boards/arm/nrf9160_innblue21/nrf9160_innblue21_partition_conf.dtsi
similarity index 100%
rename from boards/arm/nrf9160_innblue21/nrf9160_innblue21_partition_conf.dts
rename to boards/arm/nrf9160_innblue21/nrf9160_innblue21_partition_conf.dtsi
diff --git a/boards/arm/nrf9160_innblue22/nrf9160_innblue22.dts b/boards/arm/nrf9160_innblue22/nrf9160_innblue22.dts
index 6bd4338..61c376e 100644
--- a/boards/arm/nrf9160_innblue22/nrf9160_innblue22.dts
+++ b/boards/arm/nrf9160_innblue22/nrf9160_innblue22.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "nrf9160_innblue22_common.dts"
+#include "nrf9160_innblue22_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/nrf9160_innblue22/nrf9160_innblue22_common.dts b/boards/arm/nrf9160_innblue22/nrf9160_innblue22_common.dtsi
similarity index 98%
rename from boards/arm/nrf9160_innblue22/nrf9160_innblue22_common.dts
rename to boards/arm/nrf9160_innblue22/nrf9160_innblue22_common.dtsi
index f4be692..33096f3 100644
--- a/boards/arm/nrf9160_innblue22/nrf9160_innblue22_common.dts
+++ b/boards/arm/nrf9160_innblue22/nrf9160_innblue22_common.dtsi
@@ -207,4 +207,4 @@
 };
 
 /* Include partition configuration file */
-#include "nrf9160_innblue22_partition_conf.dts"
+#include "nrf9160_innblue22_partition_conf.dtsi"
diff --git a/boards/arm/nrf9160_innblue22/nrf9160_innblue22_ns.dts b/boards/arm/nrf9160_innblue22/nrf9160_innblue22_ns.dts
index 599d03f..f68b350 100644
--- a/boards/arm/nrf9160_innblue22/nrf9160_innblue22_ns.dts
+++ b/boards/arm/nrf9160_innblue22/nrf9160_innblue22_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "nrf9160_innblue22_common.dts"
+#include "nrf9160_innblue22_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/nrf9160_innblue22/nrf9160_innblue22_partition_conf.dts b/boards/arm/nrf9160_innblue22/nrf9160_innblue22_partition_conf.dtsi
similarity index 100%
rename from boards/arm/nrf9160_innblue22/nrf9160_innblue22_partition_conf.dts
rename to boards/arm/nrf9160_innblue22/nrf9160_innblue22_partition_conf.dtsi
diff --git a/boards/arm/nrf9160dk_nrf9160/doc/index.rst b/boards/arm/nrf9160dk_nrf9160/doc/index.rst
index 6b2473c..7a8dbc4 100644
--- a/boards/arm/nrf9160dk_nrf9160/doc/index.rst
+++ b/boards/arm/nrf9160dk_nrf9160/doc/index.rst
@@ -250,7 +250,7 @@
 
 You can build and flash the examples to make sure Zephyr is running correctly on
 your board. The button and LED definitions can be found in
-:zephyr_file:`boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_common.dts`.
+:zephyr_file:`boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_common.dtsi`.
 
 References
 **********
diff --git a/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160.dts b/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160.dts
index bdb79b8..c69c906 100644
--- a/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160.dts
+++ b/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "nrf9160dk_nrf9160_common.dts"
+#include "nrf9160dk_nrf9160_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_common.dts b/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_common.dtsi
similarity index 98%
rename from boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_common.dts
rename to boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_common.dtsi
index 02fbac8..80e4c9c 100644
--- a/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_common.dts
+++ b/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_common.dtsi
@@ -264,4 +264,4 @@
 };
 
 /* Include partition configuration file */
-#include "nrf9160dk_nrf9160_partition_conf.dts"
+#include "nrf9160dk_nrf9160_partition_conf.dtsi"
diff --git a/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_ns.dts b/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_ns.dts
index e516d8e..b4237bb 100644
--- a/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_ns.dts
+++ b/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "nrf9160dk_nrf9160_common.dts"
+#include "nrf9160dk_nrf9160_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_partition_conf.dts b/boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_partition_conf.dtsi
similarity index 100%
rename from boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_partition_conf.dts
rename to boards/arm/nrf9160dk_nrf9160/nrf9160dk_nrf9160_partition_conf.dtsi
diff --git a/boards/arm/nrf9161dk_nrf9161/nrf9161dk_nrf9161_common.dtsi b/boards/arm/nrf9161dk_nrf9161/nrf9161dk_nrf9161_common.dtsi
index 52543f0..7d1df4f 100644
--- a/boards/arm/nrf9161dk_nrf9161/nrf9161dk_nrf9161_common.dtsi
+++ b/boards/arm/nrf9161dk_nrf9161/nrf9161dk_nrf9161_common.dtsi
@@ -264,4 +264,4 @@
 };
 
 /* Include partition configuration file */
-#include "nrf9161dk_nrf9161_partition_conf.dts"
+#include "nrf9161dk_nrf9161_partition_conf.dtsi"
diff --git a/boards/arm/nrf9161dk_nrf9161/nrf9161dk_nrf9161_partition_conf.dts b/boards/arm/nrf9161dk_nrf9161/nrf9161dk_nrf9161_partition_conf.dtsi
similarity index 100%
rename from boards/arm/nrf9161dk_nrf9161/nrf9161dk_nrf9161_partition_conf.dts
rename to boards/arm/nrf9161dk_nrf9161/nrf9161dk_nrf9161_partition_conf.dtsi
diff --git a/boards/arm/sparkfun_thing_plus_nrf9160/doc/index.rst b/boards/arm/sparkfun_thing_plus_nrf9160/doc/index.rst
index b6262ef..44366c4 100644
--- a/boards/arm/sparkfun_thing_plus_nrf9160/doc/index.rst
+++ b/boards/arm/sparkfun_thing_plus_nrf9160/doc/index.rst
@@ -142,7 +142,7 @@
 
 You can build and flash the examples to make sure Zephyr is running correctly on
 your board. The button and LED definitions can be found in
-:zephyr_file:`boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_common.dts`.
+:zephyr_file:`boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_common.dtsi`.
 
 References
 **********
diff --git a/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160.dts b/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160.dts
index 7afa25b..3410f02 100644
--- a/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160.dts
+++ b/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160.dts
@@ -7,7 +7,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160_sica.dtsi>
-#include "sparkfun_thing_plus_nrf9160_common.dts"
+#include "sparkfun_thing_plus_nrf9160_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_common.dts b/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_common.dtsi
similarity index 98%
rename from boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_common.dts
rename to boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_common.dtsi
index 88adec1..cf7502c 100644
--- a/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_common.dts
+++ b/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_common.dtsi
@@ -227,4 +227,4 @@
 };
 
 /* Include partition configuration file */
-#include "sparkfun_thing_plus_nrf9160_partition_conf.dts"
+#include "sparkfun_thing_plus_nrf9160_partition_conf.dtsi"
diff --git a/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_ns.dts b/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_ns.dts
index 669bb3c..6ad23ab 100644
--- a/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_ns.dts
+++ b/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_ns.dts
@@ -7,7 +7,7 @@
 
 /dts-v1/;
 #include <nordic/nrf9160ns_sica.dtsi>
-#include "sparkfun_thing_plus_nrf9160_common.dts"
+#include "sparkfun_thing_plus_nrf9160_common.dtsi"
 
 / {
 	chosen {
diff --git a/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_partition_conf.dts b/boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_partition_conf.dtsi
similarity index 100%
rename from boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_partition_conf.dts
rename to boards/arm/sparkfun_thing_plus_nrf9160/sparkfun_thing_plus_nrf9160_partition_conf.dtsi
diff --git a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dts b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dtsi
similarity index 98%
rename from boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dts
rename to boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dtsi
index 98b95dd..c61a68f 100644
--- a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dts
+++ b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dtsi
@@ -340,4 +340,4 @@
 };
 
 /* Include partition configuration file */
-#include "thingy53_nrf5340_partition_conf.dts"
+#include "thingy53_nrf5340_partition_conf.dtsi"
diff --git a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpuapp.dts b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpuapp.dts
index d35863f..dd05a7a 100644
--- a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpuapp.dts
+++ b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpuapp.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf5340_cpuapp_qkaa.dtsi>
-#include "thingy53_nrf5340_common.dts"
+#include "thingy53_nrf5340_common.dtsi"
 
 / {
 	model = "Nordic Thingy53 NRF5340 Application";
diff --git a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpuapp_ns.dts b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpuapp_ns.dts
index 03faa8e..293a36c 100644
--- a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpuapp_ns.dts
+++ b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpuapp_ns.dts
@@ -6,7 +6,7 @@
 
 /dts-v1/;
 #include <nordic/nrf5340_cpuappns_qkaa.dtsi>
-#include "thingy53_nrf5340_common.dts"
+#include "thingy53_nrf5340_common.dtsi"
 
 / {
 	model = "Nordic Thingy53 NRF5340 Application";
diff --git a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpunet.dts b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpunet.dts
index 25eefde..6542d47 100644
--- a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpunet.dts
+++ b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpunet.dts
@@ -129,4 +129,4 @@
 };
 
 /* Include shared RAM configuration file */
-#include "thingy53_nrf5340_shared_sram_planning_conf.dts"
+#include "thingy53_nrf5340_shared_sram_planning_conf.dtsi"
diff --git a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_partition_conf.dts b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_partition_conf.dtsi
similarity index 95%
rename from boards/arm/thingy53_nrf5340/thingy53_nrf5340_partition_conf.dts
rename to boards/arm/thingy53_nrf5340/thingy53_nrf5340_partition_conf.dtsi
index 4ec6850..6f5f8a2 100644
--- a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_partition_conf.dts
+++ b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_partition_conf.dtsi
@@ -57,4 +57,4 @@
 };
 
 /* Include shared RAM configuration file */
-#include "thingy53_nrf5340_shared_sram_planning_conf.dts"
+#include "thingy53_nrf5340_shared_sram_planning_conf.dtsi"
diff --git a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_shared_sram_planning_conf.dts b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_shared_sram_planning_conf.dtsi
similarity index 100%
rename from boards/arm/thingy53_nrf5340/thingy53_nrf5340_shared_sram_planning_conf.dts
rename to boards/arm/thingy53_nrf5340/thingy53_nrf5340_shared_sram_planning_conf.dtsi