4 ms·
Was a bug in an AM335x SoC, from TI. Our HW engineers accidentally missed an errata, which I managed to re-discover and track down independently. Once in a whil
by not_your_vase 4y ago
Was a bug in an AM335x SoC, from TI. Our HW engineers accidentally missed an errata, which I managed to re-discover and track down independently. Once in a while it caused a CPU timer to get "stuck", essentially halting most of the operating system - due to an improperly grounded crystal. Sometimes it happened twice a week, sometimes it was hiding for half a month. I pulled out half of my hair by the time I managed to get to the bottom of it, it took months.