On 10/24/2014 10:43 AM, Felipe Balbi wrote: > On Fri, Oct 24, 2014 at 08:26:43AM -0500, Nishanth Menon wrote: >> On 10/23/2014 11:53 PM, Lokesh Vutla wrote: >>> On some Soc's RTC is powered by an external power regulator. >> SoC ? -> could you rephrase this to indicate "certain SoCs such as >> DRA7, RTC is an independent voltage domain of it's own and on >> platforms such as DRA7-evm, this may be supplied by individual >> regulator on it's own. >> >>> e.g. RTC on DRA7 SoC. Make the OMAP RTC driver support a >>> power regulator. >> >> Question ofcourse is what voltage would you like that regulator to be >> at? As you are aware, certain LDOs and SMPS can drive varying voltage >> and just enable/disable would do just the default voltage of the >> SMPS/LDO, right? OR am i missing something here? > > just pass the correct voltage through DTS as we do for all other > regulators ? It's only tricky when we have a range of acceptable > voltages but for RTC, IIRC, it's always a set voltage (1.0V or 1.8V). > you mean min=max=1.8V board constraint - sure it will work, except I might expect to see that in the example? OR expect the driver to explicitly set it. -- Regards, Nishanth Menon -- 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
