On Wed, 2 Mar 2011 08:40:12 +0200 Tomi Valkeinen <tomi.valkeinen@xxxxxx> wrote: > Hi Paul and Tero, > > Some months ago there were discussions in Nokia about the problem with > VDD2 OPP and DSS fck. The problem was (if I recall right) that the > lowest VDD2 OPP cannot be used if DSS fck is over some certain limit (it > was around 100MHz). If I understood correctly, this was also discussed > with Paul. > > Do you remember this (and did I remember it right =)? What is the status > of this? > At least lower OPP breaks DSS on N900 and Beagle if display is on while entering into lower OPP. This made me thinking that should initial round of "[PATCH 10/13] OMAP3: Add voltage dependency table for VDD1." use only OMAP3430_VDD_CORE_OPP3_UV for core voltage until there's some dynamic/DSS voltage domain support in DSS? http://marc.info/?l=linux-omap&m=129889365901937&w=2 That way, I believe, the DVFS has shorter path to mainline and makes easier to add driver specific support & hooks. DVFS is not only power savings but users are interesting about additional performance too. https://bugs.meego.com/show_bug.cgi?id=13833 -- Jarkko -- 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
