Hi, On Tue, Apr 23, 2019 at 3:19 AM Robin Murphy <robin.murphy@xxxxxxx> wrote: > > Hi Doug, > > On 19/04/2019 23:18, Douglas Anderson wrote: > > This adds a code for turning on chicken bit 11, which appears to avoid > > a potential CPU deadlock that could occur. The exact set of > > instruction needed to trigger this errata is not totaly known but we > > have a high level of confidence that the problem is fixed by setting > > chicken bit 11. > > > > All details are in http://crbug.com/711784 > > > > This erratum has no known number and thus I have tagged it CR711784 > > (after the Chrome OS bug number). I have created separate A12 / A17 > > configs to match how the rest of the A12 / A17 errata is handled. > > The written-up workarounds for 85727[12] do actually say to set both > bits 10 and 11 of the diagnostic register, so you could probably just > fold this into the first patch and not have to worry about what to call it. > > Robin. Thanks! I was unable to find any official docs here and my past contacts with ARM about this matter have been silent. All I had was a preliminary errata description and it only included bit 10. I'll spin a v2 with them both together then. -Doug _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip