Re: ce4100 does no longer boots with CONFIG_EARLY_PRINTK enabled

[Sebastian Andrzej Siewior <bigeasy@linutronix.de>]

Stephen Warren wrote:

  > Just guessing here, but is the solution to add this patch to ToT?:
> 
> diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c
> index b40f7b9..bca2232 100644
> --- a/drivers/tty/serial/8250.c
> +++ b/drivers/tty/serial/8250.c
> @@ -1107,7 +1107,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
>                          */
>                         DEBUG_AUTOCONF("Xscale ");
>                         up->port.type = PORT_XSCALE;
> -                       up->capabilities |= UART_CAP_UUE;
> +                       up->capabilities |= UART_CAP_UUE | UART_CAP_RTOIE;
>                         return;
>                 }
>         } else {

With that patch I have a working serial again.

> I added a new flag used for both XSCALE and TEGRA port types, and
> modified the XSCALE port type to define the new flag, thinking that all
> code would take the capabilities from that port type table entry, but
> perhaps the auto-detection logic needs an equivalent change for XSCALE.
> 
>> I'm little worried that it seems somehow that I have two uarts at
>> 0xdffe0200 and IRQ4 which is evil.
> 
> That does sound odd. It's very unclear to me how my change would cause
> that...

Seems unrelated to your change.

Sebastian