Messages in this thread | | | Date | Tue, 19 Jan 2016 12:33:15 -0800 | From | Tony Lindgren <> | Subject | Re: Nokia N900: musb is in wrong state after boot |
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Hi,
* Pali Rohár <pali.rohar@gmail.com> [160109 07:16]: > Hello, > > when I boot 4.4.0-rc7+ kernel compiled with g_nokia into zImage on Nokia > N900 into userspace then usb gadget (g_nokia) does not work. Notebook, > connected on other side does not see any usb device... Connecting and > disconnecting cable does not change anything, still not work. > > But if I run this command > $ echo peripheral > /sys/bus/platform/devices/musb-hdrc.0.auto/mode
> > then gadget starts working. Other side see usb device and can use it. > Also connecting and disconnecting usb cable working fine. After > connecting it again, usb device OK.
N900 had the PHY interrupt wired to the bq chip instead of twl4030, right?
You can fix this issue similar to phy-twl4030-usb.c. In function twl4030_phy_power_on() we call schedule_delayed_work() that checks the state of the ID pin on boot up.
I think that's only needed for the i2c based PHY's with MUSB, with the others the USB driver has a better idea of the current state.
Regards,
Tony
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