From: Aaron Durbin <adurbin@chromium.org>
To: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Cc: Aaron Durbin <adurbin@chromium.org>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Daniel Kurtz <djkurtz@chromium.org>,
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>,
Marc Gonzalez <marc_gonzalez@sigmadesigns.com>,
Doug Anderson <dianders@chromium.org>,
Matt Redfearn <matt.redfearn@mips.com>,
Jeffy <jeffy.chen@rock-chips.com>,
"open list:SERIAL DRIVERS" <linux-serial@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/3] serial: 8250_early: Add earlycon support for AMD Carrizo / Stoneyridge
Date: Mon, 9 Apr 2018 10:00:13 -0600 [thread overview]
Message-ID: <CAE2855vVXr24bOjXvU7pVcDs_X-6G-xndsUf=9jtyXVJS5G6bA@mail.gmail.com> (raw)
In-Reply-To: <20180406144713.30d1ca00@alans-desktop>
On Fri, Apr 6, 2018 at 7:47 AM, Alan Cox <gnomes@lxorguk.ukuu.org.uk> wrote:
>> But we don't have the full ACPI interpreter up in the early part of
>> the kernel. All these 'early' devices have their own setup/config
>> which is the source of the issue. Or maybe I am wrong about the full
>> interpreter and the early drivers are just not taking advantage of the
>> ACPI device binding?
>
> In very early boot with serial console you just have to pray. No change
> there. Once ACPI comes up you however have the information to populate
> everything and configure correctly.
>
> So it should work fine except for kernel hackers trying to do early boot
> debug, which is a small (but important) cornercase ?
Yes, I think we're on the same page. This patch series is trying to
get the early console working correctly given the current code
assumptions.
-Aaron
next prev parent reply other threads:[~2018-04-09 16:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180314003655.12141-1-djkurtz@chromium.org>
2018-03-14 0:36 ` [PATCH 1/3] serial: 8250_early: Add earlycon support for AMD Carrizo / Stoneyridge Daniel Kurtz
2018-03-14 10:35 ` Andy Shevchenko
2018-03-14 10:53 ` Ricardo Ribalda Delgado
2018-03-14 16:29 ` Daniel Kurtz
2018-03-14 16:38 ` Andy Shevchenko
2018-03-14 17:12 ` Aaron Durbin
2018-03-14 17:31 ` Andy Shevchenko
2018-03-26 18:24 ` Alan Cox
2018-03-27 2:56 ` Aaron Durbin
2018-03-29 13:34 ` Alan Cox
2018-04-01 18:54 ` Aaron Durbin
2018-04-06 13:47 ` Alan Cox
2018-04-09 16:00 ` Aaron Durbin [this message]
2018-03-14 0:36 ` [PATCH 3/3] serial: core: Allow skipping old serial port initialization Daniel Kurtz
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