[MinnowBoard] Need to disable both UART on LSE?

[John Hawley]

I assume all you are trying to do is flip the UARTs over to GPIO, this
can be done in the bios configuration menu here:

http://elinux.org/Minnowboard:MaxBios#LPSS_.26_SCC_Configuration

you'll notice

* LPSS 1 Configuration
** LPSS HSUART #1 Support
** LPSS HSUART #1 FlowCtrl
** LPSS HSUART #2 Support

Just flip them to disabled and the GPIO pins should work as you are
expecting.

- John 'Warthog9' Hawley

On 04/29/2015 08:05 AM, Berth-Olof Bergman wrote:
> Hi Lucas,
> 
> What I mean is that many pins are multiplexed and that is controlled by something called ”pad configuration registers”. In order to use the pads (pins) it’s not sufficient to change the GPIO configuration registers. You need to change the pads configuration registers as well, so the functionality gets routed to the pin of the chip. The changes need to be made to the pad configuration registers first and after that you will be able to set the GPIO configuration for the pins.
> 
> The documentation you need is the BWG and EDS documentation.
> 
> Best regards,
> 
> Berth-Olof Bergman
> Winzent Technologies
> 
>> 29 apr 2015 kl. 16:05 skrev Lucas De Marchi <lucas.de.marchi at gmail.com>:
>>
>> Hi Berth,
>>
>> On Wed, Apr 29, 2015 at 3:49 AM, Berth-Olof Bergman
>> <bo.bergman at winzenttech.com> wrote:
>>> If you don’t use the BIOS and setup the pad configuration registers yourself, you should be able to use both of the pins without disable both UARTs.
>>
>> What do you mean by "should"?  If it works for you, what's your
>> firmware and kernel versions so I can pinpoint the problem here?
>>
>> thanks
>>
>> Lucas De Marchi
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> 
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