No model in devicetree_unfixed.h :

[yfourel-vossloh]

I use zephyr 3.0 on a STM32H743.

We add "model" in our zephyr.dts file because we need to send model name during Mqtt Nbirth request.
Here is the beginning of zephyr.dts :

/dts-v1/;

/ {
	#address-cells = < 0x1 >;
	#size-cells = < 0x1 >;
	model = "VOG ETH board";
	compatible = "vossloh,vog-eth";
	chosen {
		zephyr,entropy = &rng;
		zephyr,flash-controller = &flash;
		zephyr,console = &lpuart1;

• My problem is that I can find "compatible" on devicetree_unfixed.h, but not "model". I think it's a bug because you allow to add model property, but it seems it's not generated in devicetree_unfixed.h
• Moreover, is it possible to access root property ? No result for #define MODEL_TREE DT_PROP(DT_ROOT, compatible), whereas I can access nodes properties.

[gmarull]

Does vossloh,vog-eth binding exist with model property? model should likely be part of base.yaml.

[yfourel-vossloh]

Thanks for your answer.
My colleague is in vacation during two weeks, I prefer he'll answer you because he worked on yaml and dts files more than me.

[nvincent-vossloh]

Does vossloh,vog-eth binding exist with model property? model should likely be part of base.yaml.

The board mentionned is defined in a repository out of zephyr tree (https://docs.zephyrproject.org/3.0.0/application/index.html#custom-board-definition), vossloh was not defined in dts/bindings/vendor-prefixes.txt, however it does not change the output of devicetree_unfixed.h.

Please note that issue can be seen with boards defined in zephyr's repository:

west build -b nucleo_h743zi zephyr/samples/hello_world/

in build/zephyr/zephyr.dts:

/dts-v1/;

/ {
        #address-cells = < 0x1 >;
        #size-cells = < 0x1 >;
        model = "STMicroelectronics STM32H743ZI-NUCLEO board";
        compatible = "st,stm32h743zi-nucleo";
...

in build/zephyr/include/generated/devicetree_unfixed.h, there is no trace of model however there are mutliple macros related to the compatible property at the same level

...
/* Generic property macros: */
#define DT_N_P_compatible {"st,stm32h743zi-nucleo"}
#define DT_N_P_compatible_IDX_0 "st,stm32h743zi-nucleo"
#define DT_N_P_compatible_IDX_0_EXISTS 1
#define DT_N_P_compatible_FOREACH_PROP_ELEM(fn) fn(DT_N, compatible, 0)
#define DT_N_P_compatible_FOREACH_PROP_ELEM_VARGS(fn, ...) fn(DT_N, compatible, 0, __VA_ARGS__)
#define DT_N_P_compatible_LEN 1
#define DT_N_P_compatible_EXISTS 1
...