From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
Subject: Re: [PATCH v3 0/3] tty: serial: Add earlycon support to MT8173 SoC
Date: Wed, 29 Apr 2015 08:46:04 +0200
Message-ID: <20150429064604.GS6325@pengutronix.de>
References: <1430228434-31779-1-git-send-email-eddie.huang@mediatek.com>
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To: Eddie Huang <eddie.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
Cc: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>, Matthias Brugger <matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>, Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>, Ian Campbell <ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>, Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>, Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>, Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>, Jiri Slaby <jslaby-AlSwsSmVLrQ@public.gmane.org>, Howard Chen <ibanezchen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Ashwin Chaugule <ashwin.chaugule-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Peter Hurley <peter-WaGBZJeGNqdsbIuE7sb01tBPR1lH4CV8@public.gmane.org>, Wang Long <long.wanglong-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>, Kevin Cernekee <cernekee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Vineet Gupta <Vineet.Gupta1-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>, "Rafael J. Wysocki" <rafael.j.wysocki-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Alan Cox <alan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mediatek@
List-Id: devicetree@vger.kernel.org

On Tue, Apr 28, 2015 at 09:40:31PM +0800, Eddie Huang wrote:
> This patch add earlycon support to MT8173 SoC platform.
> To use earlycon, need
> 1. Add earlycon in boot parameters
> 2. Add "linux,sdtout-path" property in device tree file
> 
> This patch based on 4.1-rc1.
> 
> Change in v3:
> Remove noinit options, not necessary, because 8250_early.c will not init hardware
> if not provide baudrate.
> 
> Change v2:
> 1. Add noinit options.
> 2. Remove duplicate code in 8250_mtk.c, reuse the 8250_early.c existed function.
> 
> Eddie Huang (3):
>   tty: serial: 8250: export early_serial8250_setup function
>   tty: serial: 8250_mtk: Add earlycon
>   arm64: dts: Add mediatek MT8173 earlycon support

Works fine here:

Tested-by: Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>

Sascha


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