linux-kernel - Re: 0.5sec delay when ttyO0 is enabled

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Message-ID: <50585C41.1050704@mimc.co.uk>
Date:	Tue, 18 Sep 2012 12:34:25 +0100
From:	Mark Jackson <mpfj-list@...c.co.uk>
To:	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>
CC:	lkml <linux-kernel@...r.kernel.org>
Subject: Re: 0.5sec delay when ttyO0 is enabled

On 18/09/12 11:40, Mark Jackson wrote:
> I'm using a BeagleBone, and the linux kernel from Koen Kooi (https://github.com/koenkooi/linux.git).
> 
> I have noticed there is a 0.5sec delay between OMAP UART0 being initialised and the console being
> enabled.

It is, of course, when the printk() messages are processed and dumped to the console.

If I boot with the "quiet" flag, the delay is magically gone.

Apologies for the noise.

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