linux-kernel - Re: [PATCH v2 1/4] dt-bindings: pinctrl: aspeed: Add g4 USB functions

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Message-ID: <CACRpkda3gjXZnYAQUmH-tc_GXWLS_ymwrTpUb-ZQ1KQDadWCGg@mail.gmail.com>
Date:   Wed, 2 Aug 2017 10:36:00 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Andrew Jeffery <andrew@...id.au>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Joel Stanley <joel@....id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Ryan Chen <ryan_chen@...eedtech.com>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-aspeed@...ts.ozlabs.org
Subject: Re: [PATCH v2 1/4] dt-bindings: pinctrl: aspeed: Add g4 USB functions

On Tue, Jul 18, 2017 at 7:24 AM, Andrew Jeffery <andrew@...id.au> wrote:

> The AST2400 contains several USB controllers:
>
> * USB 1.1 Host Controller
> * USB 2.0 Host Controller
> * USB 2.0 Virtual Hub
> * USB 1.1 HID Controller
>
> Pins for three ports are routed to the three controllers such that:
>
> * Port 1 is a dedicated USB 1.1 host port
> * Port 2 is shared between the USB 1.1 host and HID controllers
> * Port 3 is shared between the USB 2.0 host and Hub controllers
>
> As the pins for port 1 are fixed function there is no associated mux
> function or group described in the bindings. Ports 2 and 3 are muxed as
> above, and the table below describes the mapping between pinmux function
> names and ports:
>
> Port  | USB Version  | USB Mode  | Mux Function
> ------|--------------|-----------|-------------
> 1     | 1.1          | Host      | -
> 2     | 1.1          | Host      | USB11H2
> 2     | 1.1          | HID       | USB11D1
> 3     | 2.0          | Host      | USB2H1
> 3     | 2.0          | Device    | USB2D1
>
> Signed-off-by: Andrew Jeffery <andrew@...id.au>
> Acked-by: Rob Herring <robh@...nel.org>
> ---
> v1 -> v2:
>
> * Updated the commit message to clarify HID details

Patch applied.

Yours,
Linus Walleij