linux-kernel - Re: [PATCHv4] phy: mapphone-mdm6600: Add USB PHY driver for MDM6600 on Droid 4

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Date:   Fri, 23 Mar 2018 12:35:21 +0100
From:   Sebastian Reichel <sre@...nel.org>
To:     Pavel Machek <pavel@....cz>
Cc:     Dan Williams <dcbw@...hat.com>, Tony Lindgren <tony@...mide.com>,
        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,
        Mark Rutland <mark.rutland@....com>,
        Marcel Partap <mpartap@....net>,
        Michael Scott <michael.scott@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCHv4] phy: mapphone-mdm6600: Add USB PHY driver for MDM6600
 on Droid 4

Hi,

On Fri, Mar 23, 2018 at 11:54:55AM +0100, Pavel Machek wrote:
> Hi!
> 
> > > > Do you have the related dts patches picked from next?
> > > > 
> > > > fdd192037fce ("ARM: dts: omap4-droid4: Fix USB PHY port naming")
> > > > e5b9fd7bdeb5 ("ARM: dts: omap4-droid4: Configure MDM6600 USB PHY")
> > > > 
> > > > But yeah all you need to do is have phy-mapphone-mdm6600 and
> > > > ohci-platform loaded and then ifconfig should show four wwan
> > > > interfaces being added.
> > > 
> > > ifconfig? I thought I should get /dev/ttyUSB0..3?
> > 
> > I believe they are QMI via qmi_wwan, not TTYs.
> 
> Well, qmicli expects device path... and I see nothing on ifconfig. Any
> idea how the device would be named?
> 
> But I believe it just does not work, see the qcserial experiment with
> new_id below.

Dan is right, you need qmi_wwan driver. qmicli expects
/dev/cdc-wdm<num> device. I use this on Droid 4:

qmicli -d /dev/cdc-wdm0 --some-other-option

-- Sebastian

> 
> Best regards,
> 								Pavel
> 								
> > > But qcserial driver does not bind to that. If I attempt to force it:
> > > 
> > > root@...uan:/sys/bus/usb-serial/drivers/qcserial# lsusb
> > > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> > > Bus 002 Device 002: ID 22b8:2a70 Motorola PCS
> > > Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> > > root@...uan:/sys/bus/usb-serial/drivers/qcserial# echo "22b8 2a70" >
> > > new_id
> > > [ 2059.267730] usb 2-1: unknown number of interfaces: 9
> > > [ 2059.272949] usb 2-1: unknown number of interfaces: 9
> > > [ 2059.278045] usb 2-1: unknown number of interfaces: 9
> > > [ 2059.283233] usb 2-1: unknown number of interfaces: 9
> > > [ 2059.288330] usb 2-1: unknown number of interfaces: 9
> > > [ 2059.293457] usb 2-1: unknown number of interfaces: 9
> > > [ 2059.298553] usb 2-1: unknown number of interfaces: 9
> > > [ 2059.303680] usb 2-1: unknown number of interfaces: 9
> > > [ 2059.308776] usb 2-1: unknown number of interfaces: 9
> > > 
> > > I don't get anything useful. Do I need to boot android before booting
> > > Linux or something? How does your lsusb look like?
> > > 
> > > Thanks,
> > > 								Pavel
> 
> -- 
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html



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