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Date:   Tue, 7 May 2019 18:47:43 -0700
From:   Guenter Roeck <>
To:     "Angus Ainslie (Purism)" <>
Cc:     Heikki Krogerus <>,
        Greg Kroah-Hartman <>,,
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.


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