[PATCH 2/3] bsps/microblaze: Add support for multiple UARTs

[Chris Johns]

On 31/3/2023 2:55 am, Alex White wrote:
> On Wed, Mar 29, 2023 at 11:04 PM Chris Johns <chrisj at rtems.org> wrote:
>>
>> On 30/3/2023 12:26 pm, Sam Price wrote:
>>> Same IP as the regular KCU105.
>>> The current uart ip is dependent on the fpga.
>>> I don't believe this modifies the kcu105 bsp, but allows other bsps to
>>> support up to 4 uarts.
>>
>> I am not sure if this patch is OK. If the UART driver is needed for a console
>> does that limits how it's configuration can be handled? If so that means the
>> patch is OK. Adding options for a user's custom IP is questionable.
> 
> This patch allows the user to use multiple instances of the same UART IP (AXI UART Lite v2.0) which is currently the only IP supported by the BSP.

What happens if a user needs more than 4 ports? I was discussing such a project
recently with someone and Microblaze may be an option?

I do not have a better solution at the moment so I am just understand the what
we accept and why plus how we manage it.

Chris