From mboxrd@z Thu Jan 1 00:00:00 1970 From: Detlev Zundel Date: Thu, 17 Nov 2011 18:50:04 +0100 Subject: [U-Boot] Question about baud rate In-Reply-To: <4947f7e5d3e49a62cc1a343077783a56@stevens.edu> (djantzen@stevens.edu's message of "Mon, 14 Nov 2011 12:55:51 -0500") References: <4947f7e5d3e49a62cc1a343077783a56@stevens.edu> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Dan, > I'm using a board similar to canyonlands with a ppc460ex. The baud rate > for ttyS0 is set to 115200 by the console= bootarg, but I'd also like to > set ttyS1-3 to 115200 also. Why doe you want to setup this parameters "from the outside"? Really only the serial device used for a console needs to be setup by firmware. All other serial devices should be initialized by the user space programs using them. > For each of the three uarts, the device tree has the following line: > > current-speed = <0>; /* Filled in by U-Boot */ Checking current U-Boot code, I believe this comment is simply wrong. I cannot see any part in the canyonlands / or generic 4xx infrastructure that fixes up these properties. Maybe Stefan can comment on this though. > How do I go about configuring u-boot to fill these with the baud rate I > choose? > > Sorry for the silly question! I don;t think its a silly question, but I also think that you do not need the configuration ;) Cheers Detlev -- One of the main causes of the fall of the Roman Empire was that, lacking zero, they had no way to indicate successful termination of their C programs. -- Robert Firth -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de