lkml.org 
[lkml]   [2021]   [Oct]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH v3 3/7] PCI: imx6: Fix the regulator dump when link never came up
Date
Snipped...

> > >
> > > Hello Richard,
> > > I have one curiosity on this topic. Does this works well in case the
> > > regulator is shared? I just want to be sure that if the regulator is
> > > shared everything is working fine even if the PCI-E link is not used or not
> coming up for any reason.
> > >
> > [Richard Zhu] Hi Francesco:
> > Actually, this regulator used by i.MX PCIe controller driver is one fixed gpio
> regulator.
> > Refer to my understand, this regulator is not shared by different devices.
> >
> > Up to now, it works fine to power up the PCIe slot populated on the HW
> board.
>
> Isn't this something that depend on the actual board design? From the driver
> point of view you should not silently enforce such design requirement on the
> board.
> Am I missing something here? Would be glad to you if you can clarify in case.
>
[Richard Zhu] Yes, it is relied on the actual HW board design.
This regulator is one optional, not mandatory required for all the board designs.
So, there is one _enabled or not check before manipulate this regulator.

BR
Richard

> Francesco
>

\
 
 \ /
  Last update: 2021-10-26 11:19    [W:0.497 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site