Does Zephyr have any conventions for node names in Devicetree?

[cdwilson]

I came across https://www.kernel.org/doc/html/next/devicetree/bindings/dts-coding-style.html#naming-and-valid-characters which mentions some Devicetree naming rules used by the Linux Kernel:

Node and property names can use only the following characters:

1. Lowercase characters: [a-z]
2. Digits: [0-9]
3. Dash: -

Labels can use only the following characters:

1. Lowercase characters: [a-z]
2. Digits: [0-9]
3. Underscore: _

The examples shown in https://docs.zephyrproject.org/latest/build/dts/intro-syntax-structure.html appear to follow the rules mentioned above, but in the actual tree, there are lots of examples where it appears these rules are not followed. For example, nodes in the example below use _ instead of -:

zephyr/dts/bindings/led/gpio-leds.yaml

Lines 11 to 24 in c2f0a7a

	/ {
	leds {
	compatible = "gpio-leds";
	led_0 {
	gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
	};
	led_1 {
	gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
	};
	led_2 {
	gpios = <&gpio1 15 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
	};
	};
	};

Does Zephyr have any rules or conventions regarding the naming of nodes & node labels in Devicetree?

[ndrs-pst]

@cdwilson, this issue is also under discussion in the following #53506.
Based on this, I recommend aligning with the guidelines outlined in the documentation.

[cdwilson]

@ndrs-pst is that proposal limited to properties only or does it also include node names?

[ndrs-pst]

@cdwilson, from my perspective, the proposal places a primary emphasis on properties as the initial priority, leaving open the possibility of extending its application to node names in the future.