USB PHY documentation

[Martin Blumenstingl]

On Fri, Aug 26, 2016 at 12:55 PM, Jérôme Brunet <jbrunet at baylibre.com> wrote:
> I did some test on the otg controller. I had to remove the reset in the PHY
> because it was reseting both of them, so the reset intended for the 2nd PHY
> was breaking the configuration of the 1st.
I am getting the following error when 1) removing the reset and 2)
booting the mainline kernel directly (without booting the stock
Android kernel first):
[    1.297507] dwc2 c9000000.usb-controller: dwc2_core_reset() HANG!
AHB Idle GRSTCTL=0
[    1.305116] dwc2 c9000000.usb-controller: Bad value for GSNPSID: 0x00000000