[U-Boot] [PATCH] ARM: tegra: enable STDIO deregistration

[Stephen Warren <swarren@wwwdotorg.org>]

On 04/13/2015 11:22 AM, Simon Glass wrote:
> Hi Stephen,
>
> On 13 April 2015 at 11:11, Stephen Warren <swarren@wwwdotorg.org> wrote:
>> From: Stephen Warren <swarren@nvidia.com>
>>
>> At the very least when USB keyboard support is enabled, we need to enable
>> CONFIG_SYS_STDIO_DEREGISTER, so the "usb reset" is able to re-scan USB
>> ports and find new devices.
>>
>> Signed-off-by: Stephen Warren <swarren@nvidia.com>
>> ---
>> This feels like a nice fix for the upcoming release if possible. Even if
>> this causes horrible fallout (which I do not expect), it'll only affect
>> Seaboard and Ventana boards, both of which have quite limited
>> distribution.
>
> Reviewed-by: Simon Glass <sjg@chromium.org>
>
> I wonder whether you might want to (post-release) enable this always
> on Tegra, except for SPL?

Was that referring to CONFIG_SYS_STDIO_DEREGISTER or USB keyboard 
support? I suspect we should simply enable USB keyboard support 
everywhere, since most systems don't have built-in keyboards? It's 
certainly missing from devices like Trimslice that need it. Or would you 
rather only enable keyboard support on devices without a keyboard, and 
enable CONFIG_SYS_STDIO_DEREGISTER everywhere?