Re: [PATCH v3 4/4] arm64: dts: ti: Add support for J784S4 EVM board

From: Tony Lindgren
Date: Tue Nov 22 2022 - 02:51:19 EST


* Andrew Davis <afd@xxxxxx> [221118 21:05]:
> Why do we need SERIAL_8250_NR_UARTS at all, might be a better question.
> These should be dynamically allocated if the number goes over the
> default count imposed by the TTY framework. Maybe folks are still a
> bit too afraid to touch the TTY subsystem core, I don't blame them..

The 8250 core preallocates a number of ports for use, see
serial8250_isa_init_ports() and serial8250_register_8250_port(). As the
serial port driver probes, the preallocated ports get re-assigned to
the port driver.

Maybe we could keep the static serial8250_ports[] and add those ports
to a list where also the dynamically allocated ports would go..

Regards,

Tony