Re: mfd: Implement devicetree support for AB8500 Btemp

From: Arnd Bergmann
Date: Tue Sep 11 2012 - 07:22:19 EST

On Tuesday 11 September 2012, Rajanikanth HV wrote:
> >> +Supplied-to:
> >> + This shall be power supply class dependency where in the
> runtime battery
> >> + properties will be shared across fuel guage and charging
> algorithm driver.
> >
> > I probably don't understand enough of this, but shouldn't the other
> devices
> > that are supplied by this have a reference to this node rather than doing
> > it this way around? Why use strings here instead of phandles?
> This is a logical binding w.r.t power supply event change
> across energy-management-module drivers where in runtime battery
> properties are shared along with uevent notification.
> ref: di->btemp_psy.external_power_
> changed =
> ab8500_btemp_external_power_changed;
> ref: ab8500_btemp.c
> Need for this property:
> btemp, fg and charger updates power-supply properties
> based on the events listed above.
> Event handler invokes power supply change notifier
> which in-turn invokes registered power supply class call-back
> based on the 'supplied_to' string.
> ref:
> power_supply_changed_work(..) ./drivers/power/power_supply_core.c
> In this case how to approach through phandle?
> ============================

Sorry, I really tried, but I cannot make sense of what you wrote
there. Can you try again and describe in full English sentences
how the hardware blocks are connected and what their purpose is?

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