[U-Boot] [PATCH v6 3/6] dm: tegra: Enable driver model in SPL and adjust the GPIO driver

[Stephen Warren]

On 03/09/2015 11:04 AM, Simon Glass wrote:
> Hi Stephen,
>
> On 8 March 2015 at 15:00, Stephen Warren <swarren at nvidia.com> wrote:
>>
>> On 03/04/2015 03:16 PM, Tom Rini wrote:
>>> On Tue, Mar 03, 2015 at 08:02:59AM -0700, Simon Glass wrote:
>>>
>>>> Use the full driver model GPIO and serial drivers in SPL now that
>>>> these are supported. Since device tree is not available they will
>>>> use platform data.
>>>>
>>>> Remove the special SPL GPIO function as it is no longer needed.
>>>>
>>>> This is all in one commit to maintain bisectability.
>>>>
>>>> Signed-off-by: Simon Glass <sjg at chromium.org>
>>>
>>> Applied to u-boot/master, thanks!
>>
>> This patch breaks the serial console on at least NVIDIA Tegra
>> Seaboard. LCD/usbkbd still work though. I can't test any other Tegra
>> boards right now since I'm not at work. I wonder if the UART/SPI GPIO
>> is at issue? That would be specific to this board.
>
> Could be - what do you have it set to? I should be able to give it
> another test sometime today and nut it out.

I assume it must be set to "GPIO control" (especially since a 
GPIO-related change broke it). IIRC it came this way, and since the 
board boots from NAND and hence SPI isn't useful, I was going to change 
it to "always UART". However, when I attempted to modify my other 
Seaboard (actually, Springbank) that way, I broke one of the pads on the 
PCB. Luckily that left the board in the "always UART" state that I 
wanted, even without any pull-ups/downs present. Anyway, I decided not 
to touch my other board for fear of breaking it in a way that didn't 
work at all!