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Date:   Tue, 5 Jan 2021 14:04:14 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Rob Herring <robh@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jens Axboe <axboe@...nel.dk>, Stephen Boyd <sboyd@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Sebastian Reichel <sre@...nel.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-ide@...r.kernel.org,
        linux-clk@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-gpio@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-input@...r.kernel.org, linux-media@...r.kernel.org,
        linux-mmc@...r.kernel.org, netdev@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-serial@...r.kernel.org,
        alsa-devel@...a-project.org, linux-spi@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: Add missing array size constraints

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@...nel.dk>
> Cc: Stephen Boyd <sboyd@...nel.org>
> Cc: Thierry Reding <thierry.reding@...il.com>
> Cc: MyungJoo Ham <myungjoo.ham@...sung.com>
> Cc: Chanwoo Choi <cw00.choi@...sung.com>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: Bartosz Golaszewski <bgolaszewski@...libre.com>
> Cc: Jonathan Cameron <jic23@...nel.org>
> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Marc Zyngier <maz@...nel.org>
> Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
> Cc: Chen-Yu Tsai <wens@...e.org>
> Cc: Ulf Hansson <ulf.hansson@...aro.org>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Jakub Kicinski <kuba@...nel.org>
> Cc: Sebastian Reichel <sre@...nel.org>
> Cc: Ohad Ben-Cohen <ohad@...ery.com>
> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Rob Herring <robh@...nel.org>

<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?

> 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?

thanks,

greg k-h

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