On Mon, Aug 17, 2015 at 09:07:08AM +0800, Peter Chen wrote:
> On Fri, Aug 14, 2015 at 05:47:46PM +0800, Baolin Wang wrote:

> > +	1500,
> > +	1800,
> > +	550,
> > +};

> Why 550 is the last, but not 1800?

You'd have to ask the hardware engineers who designed the chip.  I
suspect it's because 550 was added at a late stage in the design process
but I'm basically just guessing there.

> >   *********************************************************************/
> > @@ -606,8 +646,31 @@ static int wm831x_power_probe(struct platform_device *pdev)
> >  		}
> >  	}

> > +	if (wm831x_pdata && wm831x_pdata->usb_gadget) {

> Where the wm831x_pdata->usb_gadget is initialized?

It's platform data, it will be initialised by whatever registers the
platform data.