On 03/30/2015 01:20 PM, Martin Sperl wrote:
> 
>> On 30.03.2015, at 06:22, Mark Brown <[email protected]> wrote:
>>>
>>> But I do not know what is the correct call to use.
>>
>> I don't know what you mean by "correct call" here, sorry.  If you're
>> talking about working out which GPIO maps to the /CS pin then can the
>> pinctrl API help?
> 
> Well - how do I change the mode of a GPIO to output (which is typically ALT0)?
> something like this:
>
>>>                     gpio_set_output(spi->gpio_cs);
> 
> I was hoping someone would have an explicit pointer...

Presumably the following DT bindings would work:

Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt

Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt

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