Re: [RFC 01/14] SoundWire: Add SoundWire bus driver documentation

From: Mark Brown
Date: Wed Nov 16 2016 - 12:59:49 EST

On Tue, Nov 15, 2016 at 07:59:14PM +0530, Vinod Koul wrote:
> On Mon, Nov 14, 2016 at 02:15:48PM +0000, Charles Keepax wrote:

> > slaves register to that. This also has the nice property that its
> > easy to create devices that sit behind other buses, for example
> > here we might want a SoundWire master that sits behind a SPI bus.
> > But you seem to have gone in the other direction and have the
> > master sitting on the same bus as the slaves.

> Since the controller on our SoC was enumerable, people went with this
> approach. In this hindsight that may not have been the best choice.

Doing buses properly isn't an obstacle to doing enumeration, indeed I'd
expect it to make it a lot easier - just have your driver for your
controller do the enumeration at probe time.

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