linux-kernel - Re: [PATCH 2/8] usb: bdc: Add Device Tree binding document for Broadcom BDC driver

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Date:   Thu, 6 Jul 2017 09:18:40 -0500
From:   Rob Herring <robh@...nel.org>
To:     Al Cooper <alcooperx@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Felipe Balbi <balbi@...nel.org>,
        yuan linyu <Linyu.Yuan@...atel-sbell.com.cn>,
        Florian Fainelli <f.fainelli@...il.com>,
        "open list:USB SUBSYSTEM" <linux-usb@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH 2/8] usb: bdc: Add Device Tree binding document for
 Broadcom BDC driver

On Tue, Jun 27, 2017 at 02:23:20PM -0400, Al Cooper wrote:
> Add Device Tree binding document for Broadcom USB Device
> Controller (BDC).
> 
> Signed-off-by: Al Cooper <alcooperx@...il.com>
> ---
>  .../devicetree/bindings/usb/brcm,bdc-udc.txt       | 28 ++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/brcm,bdc-udc.txt
> 
> diff --git a/Documentation/devicetree/bindings/usb/brcm,bdc-udc.txt b/Documentation/devicetree/bindings/usb/brcm,bdc-udc.txt
> new file mode 100644
> index 0000000..4eeaddb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/brcm,bdc-udc.txt
> @@ -0,0 +1,28 @@
> +Broadcom USB Device Controller (BDC)
> +====================================
> +
> +Required properties:
> +
> +- compatible: must be one of:
> +                "brcm,bdc-udc-v0.16"
> +                "brcm,bdc-udc"

Isn't "bdc-udc" redundant?

Where does the version number come from?

> +- reg: the base register address and length
> +- interrupts: ther interrupt line for this controller

s/ther/the/

> +
> +Optional properties:
> +
> +On Broadcom STB platforms, these properties are required:
> +
> +- phys: phandle to the USB PHY blocks

How many?

> +- clocks: phandle to the functional clock of this block
> +
> +Example:
> +
> +        udc@...02000 {
> +                status = "disabled";

Don't show status in examples.

> +                compatible = "brcm,bdc-udc-v0.16";
> +                reg = <0xf0b02000 0xfc4>;
> +                interrupts = <0x0 0x60 0x0>;
> +                phys = <&usbphy_0 0x0>;
> +                clocks = <&sw_usbd>;
> +        };
> -- 
> 1.9.0.138.g2de3478
>