From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 08 Dec 2004 16:09:06 +0000 (GMT) Received: from 67-121-164-6.ded.pacbell.net ([IPv6:::ffff:67.121.164.6]:7357 "EHLO mailserver.sunrisetelecom.com") by linux-mips.org with ESMTP id ; Wed, 8 Dec 2004 16:09:01 +0000 Received: from there ([192.168.50.222]) by mailserver.sunrisetelecom.com with Microsoft SMTPSVC(5.0.2195.6713); Wed, 8 Dec 2004 08:08:51 -0800 Content-Type: text/plain; charset="iso-8859-1" From: Karl Lessard To: linux-mips@linux-mips.org Subject: Epson13806 performances on Pb1100 Date: Wed, 8 Dec 2004 11:06:14 -0500 X-Mailer: KMail [version 1.3.2] Cc: ppopov@embeddedalley.com MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-ID: X-OriginalArrivalTime: 08 Dec 2004 16:08:51.0386 (UTC) FILETIME=[353A11A0:01C4DD40] 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: 6597 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: klessard@sunrisetelecom.com Precedence: bulk X-list: linux-mips 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 would like to know if anyone have encountered this performance problem in the past with this chip. Thanks in advance, Karl