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

Jassi Brar
2015-11-09T04:00:02Z

On Mon, Nov 2, 2015 at 5:25 PM, Martyn Welch
<martyn.welch@collabora.co.uk> wrote:
> From: Andrew Bresticker <abrestic@chromium.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.