Need a phy function to enable / disable usb squelch detection

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Kishon,

I've been debugging why some devices do not work with
the musb otg controller found on Allwinner SoC-s, and the
conclusion is not good, the Android kernel does a
poke to the phy before releasing the usb reset.

Now you did not want me to introduce any sunxi specific /
private phy functions in my initial patch-series for adding
sunxi support, but in this case I do not really see an
alternative, as this is a very platform specific hack
to work around an issue with the phy-s squelch detection
which causes it to see a squelch when reset is released
switching it to high speed mode when a lo speed device
is connected, after which things fall apart.

I'm open to some generic solution for this, but I do
not see one myself.

Thanks & Regards,

Hans

p.s.

A review of my existing sun4i-usb-phy otg support work
would be appreciated, this squelch thing is best left
as a fix on top.
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux