From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eddie Huang Subject: [PATCH v2 4/4] Document: Modify 8250 earlycon kernel parameters Date: Mon, 12 Jan 2015 21:08:24 +0800 Message-ID: <1421068104-30463-5-git-send-email-eddie.huang@mediatek.com> References: <1421068104-30463-1-git-send-email-eddie.huang@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1421068104-30463-1-git-send-email-eddie.huang@mediatek.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Rob Herring , Mark Rutland , Greg Kroah-Hartman , Matthias Brugger Cc: devicetree@vger.kernel.org, Vladimir Murzin , srv_heupstream@mediatek.com, Pawel Moll , Ian Campbell , Catalin Marinas , Jonathan Corbet , Will Deacon , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, yh.chen@mediatek.com, Howard Chen , Ashwin Chaugule , linux-serial@vger.kernel.org, Kumar Gala , "Joe.C" , Eddie Huang , Jiri Slaby , linux-arm-kernel@lists.infradead.org, Alan Cox List-Id: devicetree@vger.kernel.org Add options "noinit" to avoid init serial hardware in 8250_early.c Signed-off-by: Eddie Huang --- 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, Start an early, polled-mode console on a pl011 serial -- 1.8.1.1.dirty