DTS error when migrating from NCS 2.0.2 to NCS 2.1.0 or 2.1.1

Question

We have a very simple application with an out-of-tree driver that is working fine with NCS 2.0.2. 
 However, changing to NCS 2.1.0 or 2.1.1 results in a DTS error: 
 build/zephyr/include/generated/devicetree_unfixed.h:10719:58: error: 'DT_N_S_soc_S_i2c_40003000_P_label' undeclared here (not in a function); did you mean 'DT_N_S_soc_S_i2c_40003000_P_reg'?
10719 | #define DT_N_S_soc_S_i2c_40003000_S_lps22df_press_5c_BUS DT_N_S_soc_S_i2c_40003000 
 (the out-of-tree driver is just an LPS22HB driver very slightly modified to work with a different LPS22 variant by just changing the WHOAMI response) 
 
 We've tried switching to the in-tree LPS22HB driver and comparing the devicetree_unfixed.h to the one generated when we use the out-of-tree driver, but they're pretty much identical so we don't know why the build is failing. lvgl_dts_test.zip 
 
 We'd really like to use 2.1.1 as it has a newer version of zephyr that we need, so help on fixing this build error would be much appreciated.

Hieu · Accepted Answer

Hi aonsquared, 
 I didn't think to use your custom board. In retrospect that could have been obvious. Sorry about that. 
 I have reproduced your issue and found a helpful piece of log a little bit above the point you looked at: 
 c:\...\drivers\lps22\zephyr\lps22df.c:160:13: warning: Macro is deprecated
In file included from C:
cs\v2.1.0\zephyr\include\zephyr\arch\arm\aarch32\arch.h:20,
 from C:
cs\v2.1.0\zephyr\include\zephyr\arch\cpu.h:19,
 from C:
cs\v2.1.0\zephyr\include\zephyr\kernel_includes.h:33,
 from C:
cs\v2.1.0\zephyr\include\zephyr\kernel.h:17,
 from C:
cs\v2.1.0\zephyr\include\zephyr\init.h:11,
 from C:
cs\v2.1.0\zephyr\include\zephyr\device.h:29,
 from C:
cs\v2.1.0\zephyr\include\zephyr\drivers\sensor.h:23,
 from c:\_c\c297762_customer_dts\drivers\lps22\zephyr\lps22df.c:11:
c:\...\build\zephyr\include\generated\devicetree_unfixed.h:10719:58: error: 'DT_N_S_soc_S_i2c_40003000_P_label' undeclared here (not in a function); did you mean 'DT_N_S_soc_S_i2c_40003000_P_reg'? 
 If you go into your custom lps22df.c, you can see that at line 160, you have not moved to the new macro yet. 
 I just replaced the deprecated macro with its intended replacement, and the project built successfully on 2.1.0: 
 .i2c_master_dev_name = DEVICE_DT_GET(DT_INST_BUS(0)), 
 I believe that is the fix? 
 It did result in some new compiler warnings below though. Please remember to fix those 
 [21/137] Building C object modules/lps22/CMakeFiles/..__..__..___c__c297762_customer_dts__drivers__lps22__zephyr.dir/lps22df.c.obj
In file included from C:
cs\v2.1.0\zephyr\include\zephyr\drivers\sensor.h:23,
 from c:\_c\c297762_customer_dts\drivers\lps22\zephyr\lps22df.c:11:
C:
cs\v2.1.0\zephyr\include\zephyr\device.h:296:32: warning: initialization of 'char *' from incompatible pointer type 'const struct device *' [-Wincompatible-pointer-types]
 296 | #define DEVICE_DT_GET(node_id) (&DEVICE_DT_NAME_GET(node_id))
 | ^
c:\_c\c297762_customer_dts\drivers\lps22\zephyr\lps22df.c:160:25: note: in expansion of macro 'DEVICE_DT_GET'
 160 | .i2c_master_dev_name = DEVICE_DT_GET(DT_INST_BUS(0)),
 | ^~~~~~~~~~~~~
C:
cs\v2.1.0\zephyr\include\zephyr\device.h:296:32: note: (near initialization for 'lps22df_config.i2c_master_dev_name')
 296 | #define DEVICE_DT_GET(node_id) (&DEVICE_DT_NAME_GET(node_id))
 | ^
c:\_c\c297762_customer_dts\drivers\lps22\zephyr\lps22df.c:160:25: note: in expansion of macro 'DEVICE_DT_GET'
 160 | .i2c_master_dev_name = DEVICE_DT_GET(DT_INST_BUS(0)),
 | ^~~~~~~~~~~~~ 
 Best regards, 
 Hieu

DTS error when migrating from NCS 2.0.2 to NCS 2.1.0 or 2.1.1

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