How to support SDIO wifi/bt in DT

Rob Herring robherring2 at gmail.com
Fri Jan 17 10:14:47 EST 2014


On Thu, Jan 16, 2014 at 9:08 PM, Nicolas Pitre <nico at fluxnic.net> wrote:
> On Thu, 16 Jan 2014, Olof Johansson wrote:
>
>> "for SDIO slots" is somewhat misleading; nearly all controllers only
>> do one slot/device per controller. The designware controller can do
>> multiple slots, and that adds a bit of driver and binding complexity
>> for something that seemingly not a single vendor has actually
>> implemented.
>
> The Marvell 8688, just to name one, does both WIFI and BlueTooth over
> the same SDIO controller using separate functions/slots.

But that is logical functions within a chip, not multiple discrete
chips (i.e. slots) with their own reset, regulators, etc. There would
still be a single set of external controls per host controller I
think.

Rob



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