nrf54l15pdk: unit address and first address in 'reg' (0x5004c000) don't match for /soc/peripheral@50000000/vpr@4c000/mailbox@1

[rettichschnidi]

Building an application for the Nordic nrf54l15pdk board results in a warning generated by gen_defines.py:

$ west build --pristine --board nrf54l15pdk/nrf54l15/cpuapp samples/userspace/hello_world_user
-- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: <snip>/zephyr/samples/userspace/hello_world_user
-- CMake version: 3.25.1
-- Found Python3: /home/reto/code/3rd-party/venv-zephyrproject/bin/python3 (found suitable version "3.11.2", minimum required is "3.8") found components: Interpreter
-- Cache files will be written to: /home/reto/.cache/zephyr
-- Zephyr version: 3.7.99 (<snip>/zephyr)
-- Found west (found suitable version "1.2.0", minimum required is "0.14.0")
-- Board: nrf54l15pdk, Revision: 0.3.0, qualifiers: nrf54l15/cpuapp
-- ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
-- Found host-tools: zephyr 0.16.8 (/home/reto/.local/opt/zephyr-sdk-0.16.8)
-- Found toolchain: zephyr 0.16.8 (/home/reto/.local/opt/zephyr-sdk-0.16.8)
-- Found Dtc: /home/reto/.local/opt/zephyr-sdk-0.16.8/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version "1.6.0", minimum required is "1.4.6")
-- Found BOARD.dts: <snip>/zephyr/boards/nordic/nrf54l15pdk/nrf54l15pdk_nrf54l15_cpuapp.dts
CMake Warning at <snip>/zephyr/cmake/modules/dts.cmake:314 (message):
  gen_defines.py succeeded with some stderr contents:

  unit address and first address in 'reg' (0x5004c000) don't match for
  /soc/peripheral@50000000/vpr@4c000/mailbox@1

Call Stack (most recent call first):
  <snip>/zephyr/cmake/modules/zephyr_default.cmake:133 (include)
  <snip>/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
  <snip>/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
  CMakeLists.txt:5 (find_package)


-- Generated zephyr.dts: <snip>/zephyr/build/zephyr/zephyr.dts

This warning has "always" (at least since Zephyr 3.7.0) existed, but recently got hidded by #76472. PR #78250 will make it visible once again.

Reproducing

Steps to reproduce the behavior:

1. (until cmake: modules: dts: Restore gen_defines.py warnings #78250 is merged): Cherry-pick the commit in PR cmake: modules: dts: Restore gen_defines.py warnings #78250
2. west build --pristine --board nrf54l15pdk/nrf54l15/cpuapp samples/userspace/hello_world_user
3. observe the resulting warning

Expected behavior

No device tree warnings printed.

Impact

I can not build Zephyr without warnings.

Workaround

• Nasty hack (use @0 and @5004c000 to describe the same address):

diff --git a/dts/arm/nordic/nrf54l15_cpuapp.dtsi b/dts/arm/nordic/nrf54l15_cpuapp.dtsi
index 9cf1f6eea54..fe9e50172b4 100644
--- a/dts/arm/nordic/nrf54l15_cpuapp.dtsi
+++ b/dts/arm/nordic/nrf54l15_cpuapp.dtsi
@@ -37,7 +37,7 @@ nvic: &cpuapp_nvic {};
 };

 &cpuflpr_vpr {
-        cpuapp_vevif_rx: mailbox@1 {
+        cpuapp_vevif_rx: mailbox@5004c000 {
                 compatible = "nordic,nrf-vevif-event-rx";
                 reg = <0x0 0x1000>;
                 status = "disabled";

[nordic-piks]

Triaged internally

[rettichschnidi]

Triaged internally

Any updates on this? I'd love to finish #78253.

[nordic-piks]

@masz-nordic @anangl can you help? (regarding updates)