linux-kernel - Re: [PATCH] phy: cpcap-usb: Add CPCAP PMIC USB support

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

Date:   Wed, 22 Mar 2017 03:18:28 +0100
From:   Sebastian Reichel <sre@...nel.org>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        Marcel Partap <mpartap@....net>,
        Michael Scott <michael.scott@...aro.org>
Subject: Re: [PATCH] phy: cpcap-usb: Add CPCAP PMIC USB support

Hi,

On Thu, Mar 16, 2017 at 08:51:52PM -0700, Tony Lindgren wrote:
> Some Motorola phones like droid 4 use a custom CPCAP PMIC that has a
> multiplexing USB PHY.
> 
> This USB PHY can operate at least in four modes using pin multiplexing
> and two control GPIOS:
> 
> - Pass through companion PHY for the SoC USB PHY
> - ULPI PHY for the SoC
> - Pass through USB for the modem
> - UART debug console for the SoC
> 
> This patch adds support for droid 4 USB PHY and debug UART modes,
> support for other modes can be added later on as needed.
> 
> Both peripheral and host mode are working for the USB. The
> host mode depends on the cpcap-charger driver for VBUS.
> 
> VBUS and ID pin detection are done using cpcap-adc IIO ADC
> driver.

I tested UART, USB slave (cdc-ether) & USB host (keyboard & touchpad
from Atrix lapdock) mode with Droid 4:

Tested-by: Sebastian Reichel <sre@...nel.org>

-- Sebastian

Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)