linux-kernel - Re: [PATCH v3 9/9] dt-bindings: serial: stm32: add phandle 'bluetooth' to fix dtbs

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Date:   Wed, 24 Mar 2021 11:45:25 -0600
From:   Rob Herring <robh@...nel.org>
To:     dillon min <dillon.minfei@...il.com>
Cc:     Alexandre TORGUE <alexandre.torgue@...s.st.com>,
        rong.a.chen@...el.com, Ahmad Fatoum <a.fatoum@...gutronix.de>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux@...linux.org.uk, Vladimir Murzin <vladimir.murzin@....com>,
        afzal.mohd.ma@...il.com, gregkh@...uxfoundation.org,
        erwan.leray@...com, erwan.leray@...s.st.com,
        linux-serial@...r.kernel.org, lkp@...el.com
Subject: Re: [PATCH v3 9/9] dt-bindings: serial: stm32: add phandle
 'bluetooth' to fix dtbs_check warrning

On Fri, Mar 19, 2021 at 07:13:27PM +0800, dillon min wrote:
> Hi Alexandre,
> 
> Thanks for the reply.
> 
> On Fri, Mar 19, 2021 at 4:38 PM Alexandre TORGUE
> <alexandre.torgue@...s.st.com> wrote:
> >
> > Hi Dillon
> >
> > On 3/19/21 5:28 AM, dillon min wrote:
> > > No changes, Just loop lkp in.
> > >
> > >
> > > Hi lkp,
> > >
> > > Sorry for the late reply, thanks for your report.
> > > This patch is to fix the build warning message.
> > >
> > > Thanks.
> > > Regards
> > >
> > > On Mon, Mar 15, 2021 at 5:45 PM <dillon.minfei@...il.com> wrote:
> > >>
> > >> From: dillon min <dillon.minfei@...il.com>
> > >>
> > >> when run make dtbs_check with 'bluetoothi brcm,bcm43438-bt'
> > >> dts enabled on stm32h7, there is a warrning popup:
> > >>
> > >>>> arch/arm/boot/dts/stm32h750i-art-pi.dt.yaml: serial@...04800: 'bluetooth'
> > >>     does not match any of the regexes: 'pinctrl-[0-9]+'
> > >>
> > >> to make dtbs_check happy, so add a phandle bluetooth
> > >>
> > >> Fixes: 500cdb23d608 ("ARM: dts: stm32: Add STM32H743 MCU and STM32H743i-EVAL board")
> > >> Signed-off-by: dillon min <dillon.minfei@...il.com>
> > >> Reported-by: kernel test robot <lkp@...el.com>
> > >> ---
> > >>   Documentation/devicetree/bindings/serial/st,stm32-uart.yaml | 5 +++++
> > >>   1 file changed, 5 insertions(+)
> > >>
> > >> diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> > >> index 8631678283f9..5e674840e62d 100644
> > >> --- a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> > >> +++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> > >> @@ -50,6 +50,11 @@ properties:
> > >>       minItems: 1
> > >>       maxItems: 2
> > >>
> > >> +  bluetooth:
> > >> +    type: object
> > >> +    description: |
> > >> +      phandles to the usart controller and bluetooth
> > >> +
> >
> > Do we really need to add this "generic" property here ? You could test
> > without the "AditionalProperties:False".
> Yes, indeed. we have no reason to add a generic 'bluetooth' property
> into specific soc's interface yaml.
> I can't just remove "AditionalProperties:False", else make
> O=../kernel-art/ dtbs dtbs_check will run into
> 
> /home/fmin/linux/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml:
> 'oneOf' conditional failed, one must be fixed:
> 'unevaluatedProperties' is a required property
> 'additionalProperties' is a required property
> ...
> 
> So , i will replace "AditionalProperties:False". with
> unevaluatedProperties: false, do you agree with this?

This is okay as long as 'serial.yaml' is referenced, but will eventually 
fail if not (unevaluatedProperties isn't actually implemented yet).

> If so, i will send patch v4 later.

Or you can do this:

addtionalProperties:
  type: object

Which means any other property has to be a node.

Rob