linux-kernel - Re: [PATCH 0/1] usb: typec: tcpci: read the VBUS

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:   Tue, 7 May 2019 18:47:43 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     "Angus Ainslie (Purism)" <angus@...ea.ca>
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/1] usb: typec: tcpci: read the VBUS_VOLTAGE register

On 5/7/19 5:40 PM, Angus Ainslie (Purism) wrote:
> I don't have a setup that I can test this code right now.
> 
> I did test the tcpci_get_vbus_voltage and on my setup it is always 0.
> 

Odd. PTN5110 is supposed to support it, though the datasheet is a bit vague about it.
It may be disabled. Did you check the status of POWER_CONTROL.VBUS_VOLTAGEMonitor ?

> I don't currently have setup that I can adjust the vbus voltage to
> trigger the fault.
> 
> Angus Ainslie (Purism) (1):
>    usb: typec: tcpci: add functions to read the VBUS voltage
> 
>   drivers/usb/typec/tcpm/tcpci.c | 35 ++++++++++++++++++++++++++++++++++
>   1 file changed, 35 insertions(+)
> 
In general, an introductory patch is only useful if there is more than one patch.

Thanks,
Guenter