9 Nov
2019
9 Nov
'19
9:42 a.m.
On Thu, Nov 7, 2019 at 10:33 PM Jagan Teki jagan@amarulasolutions.com wrote:
Hi Vasily,
On Fri, Nov 8, 2019 at 9:18 AM Vasily Khoruzhick anarsoul@gmail.com wrote:
I checked voltage on regulator enable pin and it's 1.5v in u-boot (and it's not enough to enable regulator!) and in linux it's 3v. That's why USB ports have no power in u-boot.
Looks like u-boot doesn't switch GPIO voltage from 1.8v to 3.3v. Any ideas how to fix this?
I think I need to clock look of this, will look into it next week. I'm travelling till that time.
I figured it out, rockpro64 needs I/O domains to be configured in order for USB to work.
See "rockchip: rk3399: split rockpro64 out of evb_rk3399" patch on ML.