Tomi, On Fri, Jan 20, 2012 at 1:01 PM, Tomi Valkeinen <tomi.valkeinen@xxxxxx> wrote: > On Fri, 2012-01-20 at 17:26 +0530, Govindraj wrote: >> On Fri, Jan 20, 2012 at 4:03 PM, Tomi Valkeinen <tomi.valkeinen@xxxxxx> wrote: > >> > Is there a way to lock the OPP to the full power OPP? >> > >> >> btw, >> >> I think enabling cpu_idle and performance governor to should ensure that. >> >> However enabling performance governor boot fails. > > I thought so too, and tried it but got the same crash as you. > > However, I'd imagine that if I don't enable CPU idle or the governors, > the board would stay in full power mode always. But this doesn't seem to > be the case. > > Then again, I don't see how CPU power management could affect the DSS > directly. So it's probably something like: cpu goes to RET -> something > else is allowed go to lower power state (L3?) -> DSS breaks. It is probably related to the CORE state. Can you check if CORE goes to low power mode when CPU_IDLE is enabled? To prevent the CORE from going into a too-low power mode you need to request a PM QoS constraint, as Govindraj explained here above. Hope this helps! Jean > > Tomi > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
