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

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Message-ID: <74d20a42-b6cf-48d3-7777-a44e500b0eed@roeck-us.net>
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