Recommendations for a new MFD device driver?
lee.jones at linaro.org
Mon Feb 9 23:20:39 PST 2015
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
> 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
> c) Let the MFD core create the resources
I have no problem with 2, if that's the route you'd like to take.
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
More information about the linux-arm-kernel