linux-kernel - Re: [PATCH 1/2] dt-bindings: usb: misc: Add binding for Microchip usb2244 Controller

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Message-ID: <CAL_JsqKu6vr3iCz1G7MtK6gyqAvn4s4mpuLOwPzJDEmyZeROig@mail.gmail.com>
Date:   Mon, 1 Nov 2021 15:23:44 -0500
From:   Rob Herring <robh@...nel.org>
To:     Piyush Mehta <piyush.mehta@...inx.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        --to=robh+dt@...nel.org, Matthias Kaehlcke <mka@...omium.org>,
        Ravi Chandra Sadineni <ravisadineni@...omium.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Al Cooper <alcooperx@...il.com>,
        Michal Simek <michal.simek@...inx.com>,
        Linux USB List <linux-usb@...r.kernel.org>,
        devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        git <git@...inx.com>, Srinivas Goud <sgoud@...inx.com>
Subject: Re: [PATCH 1/2] dt-bindings: usb: misc: Add binding for Microchip
 usb2244 Controller

On Sun, Oct 24, 2021 at 1:06 PM Piyush Mehta <piyush.mehta@...inx.com> wrote:
>

Your email is somewhat corrupted. Lore has a warning:

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="y", Size: 2065 bytes --]

Maybe it's the '--to=robh+dt@...nel.org' email...

> Microchip's USB224x family of Hi-Speed USB 2.0 flash media card controllers
> provides an ultra-fast interface between a USB host controller and flash
> media cards.
>
> Add dt-bindings documentation for Microchip's usb2244 Controller.
> USB224x is a USB 2.0 compliant ultra fast USB 2.0 multi-format,
> SD/MMC, and MS Flash Media Controllers.
>
> Signed-off-by: Piyush Mehta <piyush.mehta@...inx.com>
> ---
>  .../devicetree/bindings/usb/microchip,usb2244.yaml | 43 ++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/microchip,usb2244.yaml
>
> diff --git a/Documentation/devicetree/bindings/usb/microchip,usb2244.yaml b/Documentation/devicetree/bindings/usb/microchip,usb2244.yaml
> new file mode 100644
> index 0000000..ecab0cb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/microchip,usb2244.yaml
> @@ -0,0 +1,43 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/usb/microchip,usb2244.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Bindings for the Microchip USB2244 Ultra Fast USB-SD Controller
> +
> +description:
> +  Microchip’s USB224x is a USB 2.0 compliant, Hi-Speed bulk only mass
> +  storage class peripheral controller intended for reading and writing
> +  to popular flash media from the xDPicture Card™, Memory Stick® (MS),
> +  Secure Digital (SD), and MultiMediaCard™ (MMC) families.
> +
> +  USB224x is a flash media card reader solution fully compliant with the
> +  USB 2.0 specification
> +
> +maintainers:
> +  - Piyush Mehta <piyush.mehta@...inx.com>
> +
> +properties:
> +  compatible:
> +    const: microchip,usb2244
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description:
> +      The phandle and specifier for the GPIO that controls the RESET line of
> +      flash media controller.
> +
> +required:
> +  - compatible
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    usb {
> +       compatible = "microchip,usb2244";

This needs to be a USB device under a USB controller node. See usb-device.yaml.

> +       reset-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
> +    };
> --
> 2.7.4
>