linux-kernel - Re: [PATCH v2 2/2] serial: earlycon: allow to specify uartclk in earlycon kernel-parameter

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Message-ID: <5627B0DC.6000700@hurleysoftware.com>
Date:	Wed, 21 Oct 2015 11:35:56 -0400
From:	Peter Hurley <peter@...leysoftware.com>
To:	Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:	Rob Herring <robh@...nel.org>, Stefan Agner <stefan@...er.ch>,
	linux-serial@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jiri Slaby <jslaby@...e.com>
Subject: Re: [PATCH v2 2/2] serial: earlycon: allow to specify uartclk in
 earlycon kernel-parameter

Hi Masahiro,

On 10/21/2015 11:31 AM, Masahiro Yamada wrote:
> If it is always correct to preserve the initialization done by boot-loader,
> the following code in 8250_early.c does not make sense.

It's not always correct to preserve the initialization by the bootloader.
For example, on my legacy x86 workstation, the bootloader does not
initialize the h/w so when I want 8250 earlycon, I must specify the
baud rate.

Regards,
Peter Hurley
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