Where to power on the wifi device before loading the driver.

[broonie@opensource.wolfsonmicro.com (Mark Brown)]

On Tue, Jun 19, 2012 at 06:01:54PM -0600, Stephen Warren wrote:

> Unfortunately, it should be noted that the WiFi device socket on Cardhu
> apparently isn't some standardized thing (like PCIe) but something
> rather more custom, although there are apparently devices available to
> plug into it from multiple module vendors which contain WiFi chips from
> multiple chip vendors.

Right, and indeed someone may decide to plug in something that isn't a
WiFi device at all but some other SDIO attached device with totally
different uses for those GPIOs.  Really these boards are an example of
the sort of thing I was talking about with modular reference systems,
though a simpler case as given what's brought out you probably can just
do something like list all the options that are there and allow hotplug
to sort things out.
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