From: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
To: Aaron Durbin <adurbin@chromium.org>
Cc: 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: Thu, 29 Mar 2018 14:34:00 +0100 [thread overview]
Message-ID: <20180329143400.6d9256a5@alans-desktop> (raw)
In-Reply-To: <CAE2855tGOq2jjqaZUnWJKL953iM6+9JCgkCAEXhKLkkLRdgUBg@mail.gmail.com>
On Mon, 26 Mar 2018 20:56:45 -0600
Aaron Durbin <adurbin@chromium.org> wrote:
> On Mon, Mar 26, 2018 at 12:24 PM, Alan Cox <gnomes@lxorguk.ukuu.org.uk> wrote:
> >> Sadly, this situation
> >> is not unique to this hardware. There is hardware all over that does
> >> not meet the current assumptions being made in the early uart drivers
> >> within the kernel.
> >
> > Is there any fundamental reason you can't just embed dt entries in the
> > ACPI table to describe the other features you need. I appreciate it
> > doesn't solve the generic PC case but it ought to help for anything where
> > the firmware cares about Linux ?
>
> What's the method for doing that? Using _DSD methods? Or have a
> pointer to examples? Sorry, I haven't spelunked into the current state
> of bridging ACPI and devicetree in a while.
ACPI 5.1 adds an _DSD method UUID for device properties.
The kernel device_property_* interface will pick them up just as if they
came from DT tables etc.
Alan
next prev parent reply other threads:[~2018-03-29 13:34 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 [this message]
2018-04-01 18:54 ` Aaron Durbin
2018-04-06 13:47 ` Alan Cox
2018-04-09 16:00 ` Aaron Durbin
2018-03-14 0:36 ` [PATCH 3/3] serial: core: Allow skipping old serial port initialization Daniel Kurtz
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