Re: [PATCH] dt-bindings: Add missing array size constraints

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On Tue, Jan 05, 2021 at 10:40:08AM -0700, Rob Herring wrote:
> On Tue, Jan 05, 2021 at 02:04:14PM +0100, Greg Kroah-Hartman wrote:
> > On Mon, Jan 04, 2021 at 04:02:53PM -0700, Rob Herring wrote:
> > > DT properties which can have multiple entries need to specify what the
> > > entries are and define how many entries there can be. In the case of
> > > only a single entry, just 'maxItems: 1' is sufficient.
> > > 
> > > Add the missing entry constraints. These were found with a modified
> > > meta-schema. Unfortunately, there are a few cases where the size
> > > constraints are not defined such as common bindings, so the meta-schema
> > > can't be part of the normal checks.
> > > 
> > > Cc: Jens Axboe <axboe@xxxxxxxxx>
> > > Cc: Stephen Boyd <sboyd@xxxxxxxxxx>
> > > Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
> > > Cc: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx>
> > > Cc: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> > > Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
> > > Cc: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
> > > Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
> > > Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> > > Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> > > Cc: Marc Zyngier <maz@xxxxxxxxxx>
> > > Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> > > Cc: Chen-Yu Tsai <wens@xxxxxxxx>
> > > Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> > > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
> > > Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
> > > Cc: Sebastian Reichel <sre@xxxxxxxxxx>
> > > Cc: Ohad Ben-Cohen <ohad@xxxxxxxxxx>
> > > Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> > > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> > > Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> > 
> > <snip>
> > 
> > > diff --git a/Documentation/devicetree/bindings/usb/generic-ehci.yaml b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
> > > index 247ef00381ea..f76b25f7fc7a 100644
> > > --- a/Documentation/devicetree/bindings/usb/generic-ehci.yaml
> > > +++ b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
> > > @@ -83,6 +83,7 @@ properties:
> > >        Phandle of a companion.
> > >  
> > >    phys:
> > > +    maxItems: 1
> > >      description: PHY specifier for the USB PHY
> > >  
> > >    phy-names:
> > > diff --git a/Documentation/devicetree/bindings/usb/generic-ohci.yaml b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
> > > index 2178bcc401bc..8e2bd61f2075 100644
> > > --- a/Documentation/devicetree/bindings/usb/generic-ohci.yaml
> > > +++ b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
> > > @@ -71,6 +71,7 @@ properties:
> > >        Overrides the detected port count
> > >  
> > >    phys:
> > > +    maxItems: 1
> > >      description: PHY specifier for the USB PHY
> > >  
> > >    phy-names:
> > > diff --git a/Documentation/devicetree/bindings/usb/ingenic,musb.yaml b/Documentation/devicetree/bindings/usb/ingenic,musb.yaml
> > > index 678396eeeb78..f506225a4d57 100644
> > > --- a/Documentation/devicetree/bindings/usb/ingenic,musb.yaml
> > > +++ b/Documentation/devicetree/bindings/usb/ingenic,musb.yaml
> > > @@ -40,7 +40,7 @@ properties:
> > >        - const: mc
> > >  
> > >    phys:
> > > -    description: PHY specifier for the USB PHY
> > > +    maxItems: 1
> > >  
> > >    usb-role-switch:
> > >      type: boolean
> > 
> > Any reason you dropped the description for this entry, but not the other
> > ones above?
> 
> No, I should have dropped those too. I dropped cases of genericish 
> descriptions on common properties. There's nothing specific to this 
> binding here really.
> 
> > 
> > > diff --git a/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml b/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml
> > > index 388245b91a55..adce36e48bc9 100644
> > > --- a/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml
> > > +++ b/Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml
> > > @@ -15,13 +15,14 @@ properties:
> > >        - const: ti,j721e-usb
> > >  
> > >    reg:
> > > -    description: module registers
> > > +    maxItems: 1
> > >  
> > >    power-domains:
> > >      description:
> > >        PM domain provider node and an args specifier containing
> > >        the USB device id value. See,
> > >        Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
> > > +    maxItems: 1
> > >  
> > >    clocks:
> > >      description: Clock phandles to usb2_refclk and lpm_clk
> > 
> > Same here, why remove the description?
> 
> Really, the question is why keep 'description' on power-domains. Perhaps 
> there's a little value in the reference to sci-pm-domain.txt, so I left 
> it.

Ok, if you are fine with this, that's ok with me, just didn't look very
consistent :)



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