linux-kernel - Re: [PATCH resend 5/6] toshiba_acpi: Add support to enable/disable USB 3

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Message-ID: <CAGdLNWGvqcTX09_kqZWScJFj96+L3=kjKE1d0aQKnQ_wrawazQ@mail.gmail.com>
Date:	Mon, 9 Feb 2015 21:46:07 -0700
From:	Azael Avalos <coproscefalo@...il.com>
To:	Darren Hart <dvhart@...radead.org>
Cc:	"platform-driver-x86@...r.kernel.org" 
	<platform-driver-x86@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH resend 5/6] toshiba_acpi: Add support to enable/disable
 USB 3

Hi Darren,

2015-02-09 21:11 GMT-07:00 Darren Hart <dvhart@...radead.org>:
> On Mon, Feb 09, 2015 at 08:34:53PM -0700, Azael Avalos wrote:
>> Toshiba laptops that come with USB 3 ports have a feature that lets
>> them disable USB 3 functionality and act as a regular USB 2 port, and
>> thus, saving power.
>>
>> This patch adds support to that feature, by creating a sysfs entry
>> named "usb_three", acceptig only two parameters, 0 to disable the
>> USB 3 (acting as a USB 2) and 1 to enable it.
>>
>
> Similar question, does the system BIOS allow you to configure this setting? If
> so, what would be the value for enabling it in the OS directly?

Yes.
A Toshiba provided app lets you configure all these parameters from Windows,
and so, I'm developing a similar app for this, a few clicks and your
settings are
changed on the next reboot :-)

>
> --
> Darren Hart
> Intel Open Source Technology Center

Cheers
Azael


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