Allwinner H3 (NanoPi Neo): Getting PORTL (on /dev/gpioc1) to work

[Emmanuel Vadot]

On Tue, 3 Oct 2017 13:27:47 +0200
Michael Hrabanek <hrabanek at gmail.com> wrote:

> Hello,
> any updates? If you'll need any testing done I'd be happy to help
> 
> Cheers,
> Michael

 I've fixed our gpio driver to not attach if we cannot enable one of
the needed clocks.
 Now I need to code the clock driver for H3, it seems that there is no
docs so it will take some time.

> On Thu, Sep 21, 2017 at 8:22 AM, Emmanuel Vadot <manu at bidouilliste.com>
> wrote:
> 
> > On Tue, 19 Sep 2017 09:45:22 +0200
> > Michael Hrabanek <hrabanek at gmail.com> wrote:
> >
> > > Hi everybody,
> > > I'm running 12.0-CURRENT (rev 323710) using GENERIC kernel on NanoPi Neo
> > > (allwinner H3). I can use and control all gpio pins on /dev/gpioc0
> > without
> > > any issue, but if I try to configure any pin on /dev/gpioc1 (there are
> > only
> > > PORTL pins there), nothing happens (pin configuration stays the same,
> > > gpioctl returns 0 and no error in log).
> > >
> > > root at nanopi-neo:~ # gpioctl -f /dev/gpioc1 -lv
> > > pin 00: 0       PL0<PU>, caps:<IN,OUT,PU,PD>
> > > pin 01: 0       PL1<PU>, caps:<IN,OUT,PU,PD>
> > > pin 02: 0       PL2<>, caps:<IN,OUT,PU,PD>
> > > pin 03: 0       PL3<>, caps:<IN,OUT,PU,PD>
> > > pin 04: 0       PL4<>, caps:<IN,OUT,PU,PD>
> > > pin 05: 0       PL5<>, caps:<IN,OUT,PU,PD>
> > > pin 06: 0       PL6<>, caps:<IN,OUT,PU,PD>
> > > pin 07: 0       PL7<>, caps:<IN,OUT,PU,PD>
> > > pin 08: 0       PL8<>, caps:<IN,OUT,PU,PD>
> > > pin 09: 0       PL9<>, caps:<IN,OUT,PU,PD>
> > > pin 10: 0       PL10<>, caps:<IN,OUT,PU,PD>
> > > pin 11: 0       PL11<>, caps:<IN,OUT,PU,PD>
> > >
> > > root at nanopi-neo:~ # gpioctl -f /dev/gpioc1 -c 10 OUT
> > >
> > > root at nanopi-neo:~ # gpioctl -f /dev/gpioc1 -lv
> > > <...>
> > > pin 10: 0       PL10<>, caps:<IN,OUT,PU,PD>
> > > pin 11: 0       PL11<>, caps:<IN,OUT,PU,PD>
> > >
> > > Did anyone managed to get pins on PORTL working? (btw there are two LEDs
> > on
> > > nanopi neo, the blue one on PA10, which I can control normally and the
> > > green (pwr) one, wired to PL10, which only slightly dims (ie. pin is not
> > > configured as output)).
> > > Any idea what's wrong? Is there an issue with FDT config? (I'm using
> > > default one from src nanopi-neo.dtb) Or some bug in kernel? I'm not
> > afraid
> > > of some kernel hacking, but I'd welcome some pointers where to look
> > first.
> > > Any suggestions would be greatly appreciated,
> > > Michael
> >
> >  Hello,
> >
> >  Thanks for reporting, I totally forgot that I needed to do a r_ccu
> > driver for H3.
> >  The PORTL on H3 lives on another gpio controller, for which it's clock
> > lives in another clock controller and we miss the driver for the latest.
> >  It also raise a problem on our gpio driver as it shouldn't attach and
> > create the node while the clocks are missing.
> >  I'll invastigate after EuroBSDCon.
> >
> >  Cheers,
> >
> > --
> > Emmanuel Vadot <manu at bidouilliste.com> <manu at freebsd.org>
> >


-- 
Emmanuel Vadot <manu at bidouilliste.com> <manu at freebsd.org>