On Thursday 14 March 2019 11:20:08 Alan Condit wrote:

> Gene,
> I just completed building Linux-4.19.25-rt16 (PREEMPT_RT) for the
> Pine64 A64+. It was relatively speaking a piece of cake. They are now
> using the mainline kernel for the Pine64 A64+. So it was just download
> the mainline kernel sources for 4.19.25 and the Preempt_rt patches,
> apply them, make the oldconfig then make menuconfig. Setup preempt_rt
> and compile. The biggest problem was figuring out what commands to use
> with the Makefile and the install commands. The directories that
> others have used seem to have changed. So insuring that I created the
> appropriate symbolic links was a little worrisome.  But once I had it
> all set up, it booted correctly the very first time.  I ran cyclictest
> and it reported an average latency of about 8uS, with a worst case of
> about 63uS.
> I don’t have a Rock64 or a RockPro64 yet but my guess is that it
> wouldn’t be too difficult either. My understanding is that they now
> both use the mainline kernel. Once I can build a preempt_rt kernel for
> the RockPro64, I’ll let you know what is involved.
> My understanding is that the Mali drivers are/were a work-in-progress.
> I don’t know where they are in terms of current usability.
> Alan
> > From: Gene Heskett <ghesk...@shentel.net>
> > Subject: Re: [Emc-users] Mali Drivers are Open Source Now
> > Date: March 9, 2019 at 4:05:07 PM PST
> > To: emc-users@lists.sourceforge.net
> >
> > On Saturday 09 March 2019 15:45:57 bari wrote:
> >> http://linux-sunxi.org/Mali
> >>
> >> This is good news if you want a totally open source system using
> >> many of the Allwinner or Rockchop multicore ARM SOC's for Linuxcnc.
> >>
> >> Needs no funny binary blob like the Rpi for boot ot GPU.
> >>
> >> -Bari
> >
> > Typical, too little, too late. The rock64 is probably sold out 6
> > months ago, and the rockchip-pro has replaced it. But haveing bought
> > the rochchip koolaid, I'll not waste any more $ until they are
> > willing to release some of the build tools.  But so far, those have
> > been top secret and apparently proprietary, questions ignored, so
> > I've not been able to do anything with what acts like a fine & 20x
> > speedier rpi3, with 4GB of ram for 10 bucks more than the rpi kit. 
> > So now its me with the wait and see attitude.

Seeing how it interfaces to a suitable mesa card for control i/o would be 
next, but ATM I'm up to by butt in getting this 6040 gantry working. I 
think it may be possible to use a 7i90HD + a triplet of 7i42TA's if 
enough gpio pins can be found to build a parport. The driver we have for 
the pi would need pretty heavy mods to translate that SPI interface to 
something usable on the rock64. The includes are a mess, and Bertho made 
sure it would not run on anything but the pi-3b.

Keep me posted please, on the list.

Thanks Alan.

Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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