From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 08 Dec 2004 18:06:06 +0000 (GMT) Received: from pimout1-ext.prodigy.net ([IPv6:::ffff:207.115.63.77]:40437 "EHLO pimout1-ext.prodigy.net") by linux-mips.org with ESMTP id ; Wed, 8 Dec 2004 18:06:00 +0000 Received: from 127.0.0.1 (adsl-68-124-224-225.dsl.snfc21.pacbell.net [68.124.224.225]) by pimout1-ext.prodigy.net (8.12.10 milter /8.12.10) with ESMTP id iB8I5s6M184356 for ; Wed, 8 Dec 2004 13:05:54 -0500 Received: from [63.194.214.47] by 127.0.0.1 (ArGoSoft Mail Server Pro for WinNT/2000/XP, Version 1.8 (1.8.6.7)); Wed, 8 Dec 2004 10:07:51 -0800 Message-ID: <41B7426A.2040502@embeddedalley.com> Date: Wed, 08 Dec 2004 10:05:30 -0800 From: Pete Popov User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040913 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Karl Lessard CC: linux-mips@linux-mips.org Subject: Re: Epson13806 performances on Pb1100 References: In-Reply-To: X-Enigmail-Version: 0.86.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-ArGoMail-Authenticated: ppopov@embeddedalley.com Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 6603 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ppopov@embeddedalley.com Precedence: bulk X-list: linux-mips Karl Lessard wrote: > Hi all, > > I'm currently developping on a Pb1100 alchemy board, and I use the Epson > 13806 graphic controller connected to the Au1100 static bus. I've written a > driver for it for kernel 2.6.x, and update the Au1100 code so I can access > 0xE 0000 0000 address range. > > Everything works fine, but for the speed. It seems that accessing the chip is > too slow for having high-graphic performances. The LCLK is set at 49500KHz, > as the memory clock inside the chip. I know it's a bit overclocked, but a > lower LCLK freezes my system. I've used the chip with the 2.4 kernel/driver to run X and some apps. I'm not sure what you mean by high performance -- does X run at reasonable speeds? Pete > I would like to know if anyone have encountered this performance problem in > the past with this chip. > > Thanks in advance, > Karl > >