linux-kernel - Re: [RFC 2/8] mailbox: Add NVIDIA Tegra XUSB mailbox driver

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Message-ID: <CABb+yY0TcdUOHXBAzg4HMAEdi6Hmusi_s9+C6qcriR1odA7hGg@mail.gmail.com>
Date:	Mon, 9 Nov 2015 09:29:58 +0530
From:	Jassi Brar <jassisinghbrar@...il.com>
To:	Martyn Welch <martyn.welch@...labora.co.uk>
Cc:	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Jon Hunter <jonathanh@...dia.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Bresticker <abrestic@...omium.org>,
	Thierry Reding <treding@...dia.com>
Subject: Re: [RFC 2/8] mailbox: Add NVIDIA Tegra XUSB mailbox driver

On Mon, Nov 2, 2015 at 5:25 PM, Martyn Welch
<martyn.welch@...labora.co.uk> wrote:
> From: Andrew Bresticker <abrestic@...omium.org>
>
> The Tegra xHCI controller's firmware communicates requests to the host
> processor through a mailbox interface.  While there is only a single
> physical channel, messages sent by the controller can be divided
> into two groups: those intended for the PHY driver and those intended
> for the host-controller driver.  The requesting driver is assigned
> one of two virtual channels when the single physical channel is
> requested.  All incoming messages are sent to both virtual channels.
>
IIRC Andrew wanted to redo the driver and in fact asked me to not pick it.
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