Warning coming from raspberrypi,bcm2835-firmware.yaml

Hi Rob,

I am getting the following warning on
Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.yaml:

Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.example.dt.yaml:
bus@30000000: compatible:0: 'raspberrypi,bcm2835-firmware' was
expected
Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.example.dt.yaml:
bus@30000000: 'mboxes' is a required property

If I change raspberrypi,bcm2835-firmware.yaml like this the fsl,aips
warnings is gone:


What is the proper way to fix this issue?

Thanks

Hi Fabio,

On Thu, Jul 02, 2020 at 11:00:25AM -0300, Fabio Estevam wrote:
> Hi Rob,
> 
> I am getting the following warning on
> Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.yaml:
> 
> Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.example.dt.yaml:
> bus@30000000: compatible:0: 'raspberrypi,bcm2835-firmware' was
> expected
> Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.example.dt.yaml:
> bus@30000000: 'mboxes' is a required property
> 
> If I change raspberrypi,bcm2835-firmware.yaml like this the fsl,aips
> warnings is gone:
> 
> --- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
> +++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
> @@ -14,7 +14,6 @@ properties:
>    compatible:
>      items:
>        - const: raspberrypi,bcm2835-firmware
> -      - const: simple-bus
> 
>    mboxes:
>      $ref: '/schemas/types.yaml#/definitions/phandle'
> @@ -48,7 +47,7 @@ required:
>  examples:
>    - |
>      firmware {
> -        compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
> +        compatible = "raspberrypi,bcm2835-firmware";
>          mboxes = <&mailbox>;
> 
>          firmware_clocks: clocks {
> 
> What is the proper way to fix this issue?

I've sent a patch for it

https://lore.kernel.org/linux-devicetree/20200626115433.125735-1-maxime@cerno.tech/

The faulty commit is in the clk-next branch, so the fix should go through there but hasn't been
picked up yet.

Maxime

Hi Maxime,

On Thu, Jul 2, 2020 at 11:32 AM Maxime Ripard <maxime@cerno.tech> wrote:

> I've sent a patch for it
>
> https://lore.kernel.org/linux-devicetree/20200626115433.125735-1-maxime@cerno.tech/

Thanks. Yes, this fixes the warning in
Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.yaml

BTW, there are still warnings coming from bcm2835-firmware.example.yaml:

$ make dt_binding_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
  CHKDT   Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
  SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
  DTC     Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml
Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dts:23.37-26.15:
Warning (simple_bus_reg): /example-0/firmware/clocks: missing or empty
reg/ranges property
  CHECK   Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml
/home/fabio/linux-next/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml:
firmware: $nodename:0: 'firmware' does not match
'^(bus|soc|axi|ahb|apb)(@[0-9a-f]+)?$'
/home/fabio/linux-next/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml:
firmware: '#address-cells' is a required property
/home/fabio/linux-next/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml:
firmware: '#size-cells' is a required property
/home/fabio/linux-next/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml:
firmware: 'ranges' is a required property

On Thu, Jul 02, 2020 at 01:20:28PM -0300, Fabio Estevam wrote:
> Hi Maxime,
> 
> On Thu, Jul 2, 2020 at 11:32 AM Maxime Ripard <maxime@cerno.tech> wrote:
> 
> > I've sent a patch for it
> >
> > https://lore.kernel.org/linux-devicetree/20200626115433.125735-1-maxime@cerno.tech/
> 
> Thanks. Yes, this fixes the warning in
> Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.yaml
> 
> BTW, there are still warnings coming from bcm2835-firmware.example.yaml:
> 
> $ make dt_binding_check
> DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
>   CHKDT   Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
>   SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.yaml
>   DTC     Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml
> Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dts:23.37-26.15:
> Warning (simple_bus_reg): /example-0/firmware/clocks: missing or empty
> reg/ranges property
>   CHECK   Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml
> /home/fabio/linux-next/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml:
> firmware: $nodename:0: 'firmware' does not match
> '^(bus|soc|axi|ahb|apb)(@[0-9a-f]+)?$'
> /home/fabio/linux-next/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml:
> firmware: '#address-cells' is a required property
> /home/fabio/linux-next/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml:
> firmware: '#size-cells' is a required property
> /home/fabio/linux-next/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.example.dt.yaml:
> firmware: 'ranges' is a required property

Yes, as mentionned in the patch above, we can't fix that without changing the binding.

Maxime