On Monday 09 October 2017 09:20 PM, Mark Brown wrote: > On Mon, Oct 09, 2017 at 06:35:14PM +0300, Tero Kristo wrote: > >> The EN signal coming in to the PMIC is actually used to poweroff the system >> completely. There is no other mechanism for doing this in lp873x based >> systems, they removed the bit for controlling dev-power-off from the >> register space. If the EN bit is down for a specific regulator, it won't go >> down when attempting to poweroff the system, otherwise the state of a >> regulator is the result of (EN_PIN | EN_BIT). > > This should be clear from the changelog (and probably the code as well). > >> I wonder if we should tie this somehow to the system-power-controller >> property though.... If the PMIC is not system-power-controller, we should >> disable the EN_PIN_CTRL from all regulators so that they don't go down if >> the EN_PIN itself is floating for example. > > Seems plausible, if someone does decided to use control at runtime the > behaviour can always be changed if the GPIO is present. Okay. So Implement a poweroff function where EN pin magic is done based on system-power-controller property? > -- 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
