From: Eddie Huang <eddie.huang@mediatek.com>
To: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: devicetree@vger.kernel.org,
Vladimir Murzin <vladimir.murzin@arm.com>,
srv_heupstream@mediatek.com, Pawel Moll <pawel.moll@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Jonathan Corbet <corbet@lwn.net>,
Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
yh.chen@mediatek.com, Howard Chen <ibanezchen@gmail.com>,
Ashwin Chaugule <ashwin.chaugule@linaro.org>,
linux-serial@vger.kernel.org, Kumar Gala <galak@codeaurora.org>,
"Joe.C" <yingjoe.chen@mediatek.com>,
Eddie Huang <eddie.huang@mediatek.com>,
Jiri Slaby <jslaby@suse.cz>,
linux-arm-kernel@lists.infradead.org,
Alan Cox <alan@linux.intel.com>
Subject: [PATCH v2 4/4] Document: Modify 8250 earlycon kernel parameters
Date: Mon, 12 Jan 2015 21:08:24 +0800 [thread overview]
Message-ID: <1421068104-30463-5-git-send-email-eddie.huang@mediatek.com> (raw)
In-Reply-To: <1421068104-30463-1-git-send-email-eddie.huang@mediatek.com>
Add options "noinit" to avoid init serial hardware in 8250_early.c
Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
---
Documentation/kernel-parameters.txt | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4df73da..03a4e9b 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -948,7 +948,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
UART at the specified I/O port or MMIO address.
MMIO inter-register address stride is either 8-bit
(mmio) or 32-bit (mmio32).
- The options are the same as for ttyS, above.
+ The options have two choices: one is the same as for
+ ttyS, above. The other is noinit, which means don't
+ initialize serial hardware, use the same setting as
+ loader.
pl011,<addr>
Start an early, polled-mode console on a pl011 serial
--
1.8.1.1.dirty
prev parent reply other threads:[~2015-01-12 13:08 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-12 13:08 [PATCH v2 0/4] tty: serial: Add earlycon support to MT8173 SoC Eddie Huang
2015-01-12 13:08 ` [PATCH v2 1/4] tty: serial: Add 8250 earlycon to support noinit option Eddie Huang
2015-01-12 15:35 ` Arnd Bergmann
2015-01-12 16:08 ` Alan Cox
2015-01-13 1:05 ` Eddie Huang
[not found] ` <1421068104-30463-2-git-send-email-eddie.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2015-02-01 16:27 ` Peter Hurley
[not found] ` <54CE53F3.5040709-WaGBZJeGNqdsbIuE7sb01tBPR1lH4CV8@public.gmane.org>
2015-02-01 18:26 ` Peter Hurley
2015-02-02 3:16 ` Eddie Huang
2015-02-02 3:45 ` Peter Hurley
2015-02-02 4:28 ` Greg Kroah-Hartman
2015-02-02 5:15 ` Peter Hurley
2015-02-02 5:24 ` Greg Kroah-Hartman
2015-02-02 5:33 ` Eddie Huang
2015-02-02 5:43 ` Peter Hurley
2015-02-02 18:46 ` Greg Kroah-Hartman
2015-02-02 2:45 ` Eddie Huang
2015-02-02 3:27 ` Peter Hurley
2015-01-12 13:08 ` [PATCH v2 2/4] tty: serial: 8250_mtk: Add earlycon Eddie Huang
2015-01-12 13:08 ` [PATCH v2 3/4] arm64: dts: Add mediatek MT8173 earlycon support Eddie Huang
2015-01-12 13:08 ` Eddie Huang [this message]
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