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Message-ID: <Y3x/cGYWLLB+J2zU@atomide.com>
Date: Tue, 22 Nov 2022 09:51:12 +0200
From: Tony Lindgren <tony@...mide.com>
To: Andrew Davis <afd@...com>
Cc: Nishanth Menon <nm@...com>, Apurva Nandan <a-nandan@...com>,
Vignesh Raghavendra <vigneshr@...com>,
Tero Kristo <kristo@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Linus Walleij <linus.walleij@...aro.org>,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
Hari Nagalla <hnagalla@...com>
Subject: Re: [PATCH v3 4/4] arm64: dts: ti: Add support for J784S4 EVM board
* Andrew Davis <afd@...com> [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
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