[U-Boot] USB doesn't work on Rockpro64 in u-boot

[Vasily Khoruzhick]

On Wed, Nov 6, 2019 at 8:50 AM Jagan Teki <jagan at amarulasolutions.com> wrote:
>
> Hi Vasily,
>
> On Wed, Nov 6, 2019 at 9:17 AM Vasily Khoruzhick <anarsoul at gmail.com> wrote:
> >
> > Hi Akash, Jagan,
> >
> > Looks like USB is not functional in u-boot on Rockpro64. u-boot is
> > from git, commit 680023c5fab6b1777c0c6f2e76e5d2effb7903a0.
> >
> > I'm using u-boot SPL and mainline ATF
> > (19adcb415c313d656324d54e7608cdc7d7a5c414 is ATF commit)
> >
> > 'usb start' doesn't detect anything but hubs and looks like there's no
> > power on USB ports:
> >
> > => usb start
> > starting USB...
> > Bus usb at fe380000: USB EHCI 1.00
> > Bus usb at fe3c0000: USB EHCI 1.00
> > Bus dwc3: Register 2000140 NbrPorts 2
> > Starting the controller
> > USB XHCI 1.10
> > Bus dwc3: Register 2000140 NbrPorts 2
> > Starting the controller
> > USB XHCI 1.10
> > scanning bus usb at fe380000 for devices... 1 USB Device(s) found
> > scanning bus usb at fe3c0000 for devices... 1 USB Device(s) found
> > scanning bus dwc3 for devices... 1 USB Device(s) found
> > scanning bus dwc3 for devices... 1 USB Device(s) found
> >        scanning usb for storage devices... 0 Storage Device(s) found
> >
> > => usb tree
> > USB device tree:
> >   1  Hub (480 Mb/s, 0mA)
> >      u-boot EHCI Host Controller
> >
> >   1  Hub (480 Mb/s, 0mA)
> >      u-boot EHCI Host Controller
> >
> >   1  Hub (5 Gb/s, 0mA)
> >      U-Boot XHCI Host Controller
> >
> >   1  Hub (5 Gb/s, 0mA)
> >      U-Boot XHCI Host Controller
> >
> > Regulators were probed correctly according to 'dm tree':
> >
> >  regulator    14  [ + ]   fixed regulator       |-- vcc12v-dcin
> >  regulator    15  [ + ]   fixed regulator       |-- vcc1v8-s3
> >  regulator    16  [ + ]   fixed regulator       |-- vcc3v3-pcie-regulator
> >  regulator    17  [ + ]   fixed regulator       |-- vcc3v3-sys
> >  regulator    18  [ + ]   fixed regulator       |-- vcc5v0-host-regulator
> >  regulator    19  [ + ]   fixed regulator       |-- vcc5v0-typec-regulator
> >  regulator    20  [ + ]   fixed regulator       |-- vcc5v0-sys
> >  regulator    21  [ + ]   fixed regulator       |-- vcc5v0-usb
> >  regulator    22  [ + ]   pwm_regulator         `-- vdd-log
> >
> > Any ideas what can be wrong? Have it worked before?
>
> I remember my last checking, give me sometime will check it on master
> and update you.

Looks like gpio clock is not enabled anywhere in u-boot for rk3399, so
gpios just don't work.

rk3399 clock driver is very rudimentary and doesn't touch clock gates at all.

Can anyone explain how it's supposed to work?

>
> Jagan.