From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Gehrlein Date: Thu, 29 Oct 2009 08:19:29 +0100 Subject: [U-Boot] Low BogoMIPS on MPC8541 In-Reply-To: References: <200910271629.26503.luigi.mantellini.ml@gmail.com> Message-ID: <4AE94201.8000302@tqs.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Kumar, Kumar Gala schrieb: > On Oct 27, 2009, at 10:29 AM, Luigi 'Comio' Mantellini wrote: > >> Hi All, >> >> I'm working on a stripped-down mpc8541 board (that has just >> a serian and twe enets). >> I have an issue on delay calibration. In fact at boot time, I see the >> following linux printk message on the serial console: >> >> .... >> Calibrating delay loop... 83.20 BogoMIPS (lpj=166400) >> .... > > The value seems reasonable. What freq is the core running at > (guessing 833Mhz). My 1.5Ghz 8572 has a bogomips of 150. Seems that the value is about a tenth of the core frequency. I observed similar on TQM8548. Although I know, that the value is bogus (as the name tells), do you know the reason, why it isn't the core frequency? Thanks. Kind regards, Jens