lkml.org 
[lkml]   [2018]   [Jun]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH] usb: chipidea: Fix ULPI on imx51
Date

> >>>>
> >>
> >> I never assumed it was a regression and that USB worked on RDU1 board
> >> before, so I never tried to see if this was a regression. I can only
> >> tell you that it hangs as soon as any PORTSC registers are accessed.
> >
> > Hang at register access usually means that module that owns the
> > register is not clocked.
>
> On RDU1, call to usb_phy_init() actually calls usb_gen_phy_init() that does
> regulator_enable() for &vusb_reg and clk_prepare_enable() for &clk_26M_usb. I
> thing some of these two is actually needed to avoid hang on register access.

Fabio, would you please check both regulator and clock for ULPI PHY are on at imx51bbg?

Peter
\
 
 \ /
  Last update: 2018-06-22 02:50    [W:0.071 / U:0.400 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site