linux-kernel - Re: Some ideas about tcpm driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Fri, 4 Aug 2017 18:25:59 +0800
From:   Zain Wang <wzz@...k-chips.com>
To:     Guenter Roeck <groeck@...gle.com>
Cc:     Guenter Roeck <groeck@...omium.org>,
        Yueyao Zhu <yueyao@...gle.com>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Some ideas about tcpm driver



在 2017/8/3 21:02, Guenter Roeck 写道:
> On Thu, Aug 3, 2017 at 12:28 AM, Zain Wang <wzz@...k-chips.com> wrote:
>> Hi all,
>>
>> In recent days, I tested the fusb302 driver with tcpm. (RK3399 evb board)
>> But I found an issues:
>>      There is not a regulator for type-c vbus power-supply in my board.
>>      The vbus is just controlled by a gpio-pin, and unable to support other
>> voltage except 5V.
> gpio-regulator does not work ?
Thanks for you idea， it works well with regulator-gpio.

Zain
>
>>      But now, I can't use fusb302 driver without workaround fix.
>>      Could you fix it in next version? @Yueyao
>>
>> The altmode looks not complete. I can't enter DP Alt Mode now.
> Yes, I know. Patches welcome.
>
>> And we'd like to used extcon function (used in Chrome) to link usb, dp and
>> type-c together.
> Plan is to use the extcon driver (from cros-ec) to register with the
> type-c infrastructure. I have not thought about how to tie low level
> drivers (fusb/tcpm) with extcon. Ideas welcome.
>
> Guenter
>
>> How do you think about it? @Guenter
>>
>> Thanks
>> Zain
>>
>
>