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

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Date:   Thu, 22 Mar 2018 14:55:53 +0100
From:   Pavel Machek <pavel@....cz>
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,
        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!

> idle lcd off	phy-mapphone-mdm6600	ohci-platform
> 153mW		284mW			344mW
> 
> So it seems that MDM6600 is currently not yet idling even with it's
> radio turned off, but that's something that is beyond the control of
> this USB PHY driver. This patch does get us to the point where modem
> data and GPS are usable with libqmi and ModemManager for example.
> Voice calls need more audio driver work.

Ok, let me try. I believe I should see the modem device on lsusb, but
I don't.

user@...uan:/sys/devices/platform/44000000.ocp/4a064000.usbhshost$
sudo lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
user@...uan:/sys/devices/platform/44000000.ocp/4a064000.usbhshost$
zcat /proc/config.gz | grep MAPPH
CONFIG_PHY_MAPPHONE_MDM6600=y
user@...uan:/sys/devices/platform/44000000.ocp/4a064000.usbhshost$
zcat /proc/config.gz | grep OHCI_
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_OMAP3=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
user@...uan:/sys/devices/platform/44000000.ocp/4a064000.usbhshost$

As far as I can tell,

+CONFIG_USB_WDM=y
+CONFIG_USB_SERIAL=y
+CONFIG_USB_SERIAL_QUALCOMM=y
+CONFIG_USB_SERIAL_WWAN=y

should be enabled to enable the drivers (and I did that), but without
device showing on the bus...

Any ideas?

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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