On Fri, 2014-02-14 at 21:05 +0000, Mark Brown wrote: > On Fri, Feb 14, 2014 at 02:05:56PM +0100, Krzysztof Kozlowski wrote: > > On Thu, 2014-02-13 at 17:46 +0530, Yadwinder Singh Brar wrote: > > > - low-power mode; > > - low-power mode controlled by PWREN; > > Although not all are present for each regulator. > > What exactly is low power mode and how does it interact with the enable? > The name suggests it's a more efficient mode for use with low current > drain, is that right? Yes, it is (i.e. ground current on battery load typically reduced from 8mA to 1.5mA). In this mode for Buck5 and LDO-s the regulator is enabled but output current is limited to 5 mA. > > > A generic solution for operating mode of regulators (not only s2mps11 > > and s5m8767) could cover all of these above or just a subset, for > > example regulator bindings could look like: > > - regulator-mode-suspend; /* PWR controls: on/off or low-power mode */ > > - regulator-mode-low-power; /* Low power mode */ > > Those properties have awfully generic names and part of what I was > wondering above is if the low power mode maps onto the idle or standby > modes that the API defines? We don't cover those in the bindings yet > since they are unfortunately fuzzy but perhaps we need to do so. The low power maps to REGULATOR_MODE_IDLE or REGULATOR_MODE_STANDBY (depending on the understanding of "more efficient" and "most efficient" for light loads). However the suspend mode of S5M8767/S2MPS14 is more like automatic regulator disable by SoC. Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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