strange dtbs_check error message regarding 8250_omap.yaml + serdev + gnss

[Andreas Kemnade <andreas@xxxxxxxxxxxx>]

Hi,

while doing some make dtbs_check cleanup I came across this message:

/home/andi/kernel/linux/arch/arm/boot/dts/omap3-gta04a4.dt.yaml: serial@4806c000: 'gnss' does not match any of the regexes: 'pinctrl-[0-9]+'
        From schema: /home/andi/kernel/linux/Documentation/devicetree/bindings/serial/8250_omap.yaml

the corresponding snippet is this one:

&uart2 {
        pinctrl-names = "default";
        pinctrl-0 = <&uart2_pins>;
        gnss: gnss {
                compatible = "wi2wi,w2sg0004";
                pinctrl-names = "default";
                pinctrl-0 = <&gps_pins>;
                sirf,onoff-gpios = <&gpio5 17 GPIO_ACTIVE_HIGH>;
                lna-supply = <&vsim>;
                vcc-supply = <&ldo_3v3>;
        };
};


I see a pattern for serdev objects in
Documentation/devicetree/bindings/serial/serial.yaml

patternProperties:
  ".*":
    if:
      type: object
    then:
      description:
        Serial attached devices shall be a child node of the host UART device
        the slave device is attached to. It is expected that the attached
        device is the only child node of the UART device. The slave device node
        name shall reflect the generic type of device for the node.


so I would say, everything is allowed. serial.yaml is referenced by
8250_omap.yaml. So what is the problem here?

Regards,
Andreas