On Tue, Feb 10, 2015 at 03:20:39PM +0800, Lee Jones wrote: > On Fri, 06 Feb 2015, Sascha Hauer wrote: > > > Hi All, > > > > We are adding support for a new pretty typical MFD device, the MediaTek > > MT6397. Initial patches are already posted. It's a PMIC which among other > > things has regulators and a RTC. The same RTC is reused on another PMIC, > > but with another register offset and another interrupt. > > > > Now the question is where shall we put the register/irq resource > > information? > > > > 1) Put it into the RTC device driver. > > 2) Put it into the .resource field of struct mfd_cell > > 3) Put it into the device tree using standard reg, interrupt properties and > > a) Let the RTC driver interpret these > > b) Let the MFD driver create resources in the .resource field of struct > > mfd_cell > > c) Let the MFD core create the resources > > I have no problem with 2, if that's the route you'd like to take.
Ok, thanks Lee and Mark for the input. I think we should go with option 2 then. While it's convenient to put the resources into the device tree in the first place, it probably becomes cumbersome when Linux gets a different idea how the subdevices of the PMIC should be arranged. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
