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To: freebsd-arm@freebsd.org References: From: "Russell L. 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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Feb 2020 23:45:28 -0000 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" >