Re: [PATCH RFC 0/3] Add "Simple" / Renesas Bus State Controller Driver

From: Arnd Bergmann
Date: Mon Nov 24 2014 - 15:15:48 EST


On Monday 24 November 2014 21:10:05 Geert Uytterhoeven wrote:
> As this minimal BSC driver isn't hardware-specific at all, I'm wondering
> if there's a simpler way to do this?
> - Should the driver be renamed to "simple-bus", and match "simple-bus"?
> - Should this be moved to core code, without an explicit driver for
> "simple-bus"? I.e. should the driver core just enable runtime PM for
> all devices not bound to a driver, as they may represent buses with
> child devices that do rely on runtime PM?
>
> Thanks for your comments and suggestions!

My understanding of simple-bus is that it's something that does
not have any power-management capabilities, and I'd rather not
add clocks or interrupts to it.

What I think makes more sense is to have a bus driver for it
in drivers/bus, remove the "simple-bus" compatibility value
and have the driver take care of registering the power domain
and probing the child devices using of_platform_populate on
itself.

Arnd
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