Date: Thu, 20 Feb 2020 16:45:18 -0700 From: "Russell L. Carter" <rcarter@pinyon.org> To: freebsd-arm@freebsd.org Subject: Re: Pinebook Pro instability problem and fix. Message-ID: <f226f0b5-ae4b-8cfb-7bab-d699689b300e@pinyon.org> In-Reply-To: <FC5409F5-2EF2-4A11-8D95-762D67D42D7F@gmail.com> References: <FC5409F5-2EF2-4A11-8D95-762D67D42D7F@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi Søren, On 2020-02-20 13:10, Søren Schmidt wrote: > Hi gang! > > I have been wrestling my Pinebook Pro instability problem for some time. > The problem was that if I just let it boot it would occasionally hang silently, just lock up totally unresponsive, if I changed the clock speed it would run stable. > I finally figured out the problem and its actually quite simple. > On boot we set all the regulators initially to their lowest possible voltage, this in my case is too low to make the little cpu’s run reliably. > U-boot sets the lcpu voltage to 900mv and speed to 816Mhz, on boot we re-adjust the voltage to 750mv which is too low for my cpus to work reliably @ 816Mhz. > I’ve added support for the regulator-init-microvolt setting and set that to 900000mv as per spec in the DTS, and that solves the issue. > Now running all 6 cores with changeable frequencies and no problems what so ever. > > Patches on request if needed… This is -current I assume. Do you have Xorg up? My Pinebook Pro is sitting on the table waiting for debian-testing to transition from kernel 5.4 to 5.6 so that, possibly, maybe, X works again. However, I'd ditch debian with prejudice if I could bring up X on the Pinebook Pro with FreeBSD. No need for HW acceleration. I also don't care much about the camera, microphone, etc. Thanks, Russell > -Søren > > _______________________________________________ > freebsd-arm@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?f226f0b5-ae4b-8cfb-7bab-d699689b300e>