> -----Original Message----- > From: Sripathy, Vishwanath > Sent: Tuesday, March 08, 2011 6:16 PM > To: Premi, Sanjeev; linux-omap@xxxxxxxxxxxxxxx > Subject: RE: [RFC 3/3] am35xx: pm: Hook-up with TPS65023 > > > -----Original Message----- > > From: Premi, Sanjeev [mailto:premi@xxxxxx] > > Sent: Tuesday, March 08, 2011 5:56 PM > > To: Sripathy, Vishwanath; linux-omap@xxxxxxxxxxxxxxx > > Subject: RE: [RFC 3/3] am35xx: pm: Hook-up with TPS65023 > > > > > -----Original Message----- > > > From: Sripathy, Vishwanath > > > Sent: Monday, March 07, 2011 10:01 PM > > > To: Premi, Sanjeev; linux-omap@xxxxxxxxxxxxxxx > > > Subject: RE: [RFC 3/3] am35xx: pm: Hook-up with TPS65023 > > > > [snip]...[snip] > > > > > > > > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > > > > > > owner@xxxxxxxxxxxxxxx] On Behalf Of Sanjeev Premi > > > > > > Sent: Wednesday, February 23, 2011 11:29 PM > > > > > > To: linux-omap@xxxxxxxxxxxxxxx > > > > > > Cc: Sanjeev Premi > > > > > > Subject: [RFC 3/3] am35xx: pm: Hook-up with TPS65023 > > > > > > > > > > > > Add glue logic to hook-up AM35x processors > > > > > > with TPS65023. > > > > > It seems that you are not really using Voltage layer for any > > > interaction > > > > > with TPS65023 as you are not using VP and VC. Then what is the > > > > purpose of > > > > > registering this PMIC with Voltage layer. I fail to understand the > > > > purpose > > > > > of this patch series. > > > > > > > > [sp] Then, can you suggest how do I get the AM35x EVM to boot? > > Given > > > > the > > > > current limitation of all voltage related data being > "extracted" > > > from > > > > the voltage layer - which expects only TWLx0y0 PMICs. > > > Pls use regulator framework for setting the voltage for your PMIC. > > > > [sp] If you follow the current framework, voltage.c is ingrained with > > OMAP3 initialization and same holds good for opp[_3xxx_data].c. > > > > It would have been great if current implementation allowed pluggable > > interface to a PMIC. As it stands today, it isn't. > Pls suggest what kind of pluggable interfaces you are looking for. > I would expect basic PM IC initialization to be done as part of > corresponding PMIC code and voltage layer is not the place to do PMIC > initialization. [sp] You seem to be missing the whole point on need of workaround. A walk-through in init sequence of OMAP and implicit dependencies with PMIC related code should help understanding it better. Pluggable interface is quite simple, choose TPS65023 as PMIC and I get NO code related to TWL4030 in my build. Do note that I haven't talked about voltage scaling so far. It is all about initial voltage settings. Hence the mention of initcalls earlier. > > Vishwa > > > > Until implemented, workarounds have to be put in place to get > > platform(s) > > working. Though patch series is being done for AM35x with TPS65023. > > The > > similar workaround would be required for OMAP3 with TPS65023 (for > > example). > > > > ...and I expect workaround to be simple and unobtrusive. > > > > See: > > core_initcall(omap_voltage_early_init); > > device_initcall(omap3_opp_init); > > late_initcall(omap2_common_pm_late_init); > > > > ~sanjeev > > > > [snip]..[snip] -- 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
