Device Tree warnings when building project for nrf9160

[DevinCallahan]

I'm seeing these warnings when building a project for the 9160 using SDK version v1.3.0

nrf9160dk_nrf9160ns.dts.pre.tmp:394.32-398.5: Warning (simple_bus_reg): /soc/cryptocell-sw: missing or empty reg/ranges property
nrf9160dk_nrf9160ns.dts.pre.tmp:93.42-105.3: Warning (unique_unit_address_if_enabled): /soc/peripheral@40000000/flash-controller@39000: duplicate unit-address (also used in node /soc/peripheral@40000000/kmu@39000)
nrf9160dk_nrf9160ns.dts.pre.tmp:342.19-348.3: Warning (unique_unit_address_if_enabled): /soc/peripheral@40000000/clock@5000: duplicate unit-address (also used in node /soc/peripheral@40000000/power@5000)

Are these warnings an issue or can I ignore them?

[Håkon Alseth]

Hi,

 

You can safely ignore these.

This is a warning due to some peripherals sharing the same address space. In your case, it detects that the flash-controller / kmu is on the same address space, as well as clock + power.

See the memory map for detailed info: https://infocenter.nordicsemi.com/topic/ps_nrf9160/memory.html?cp=2_0_0_3_1_1#topic

 

Kind regards,

Håkon

[DevinCallahan]

Makes sense!  Thank you!