From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: [PATCH] savagefb: Speed up the I2C bus Date: Tue, 12 Feb 2008 10:29:09 +0100 Message-ID: <20080212102909.2749d2fd@hyperion.delvare> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1JOrRx-0001jp-JW for linux-fbdev-devel@lists.sourceforge.net; Tue, 12 Feb 2008 01:29:13 -0800 Received: from smtp-102-tuesday.nerim.net ([62.4.16.102] helo=kraid.nerim.net) by mail.sourceforge.net with esmtp (Exim 4.44) id 1JOrRv-0004JD-7E for linux-fbdev-devel@lists.sourceforge.net; Tue, 12 Feb 2008 01:29:13 -0800 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: Antonino Daplas Cc: linux-fbdev-devel@lists.sourceforge.net There is no reason to drive the savagefb I2C bus at such a low speed, so bump it from 12.5 kbps to 50 kbps. The Intel (i810) and Matrox framebuffer drivers already run their I2C bus at this speed, and so are the legacy i2c-savage4 and i2c-prosavage drivers. Signed-off-by: Jean Delvare --- This patch was already sent on: * 2007-09-09 drivers/video/savage/savagefb-i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- linux-2.6.23-rc5.orig/drivers/video/savage/savagefb-i2c.c 2007-07-09 14:49:51.000000000 +0200 +++ linux-2.6.23-rc5/drivers/video/savage/savagefb-i2c.c 2007-09-09 11:34:05.000000000 +0200 @@ -140,7 +140,7 @@ static int savage_setup_i2c_bus(struct s chan->adapter.id = I2C_HW_B_SAVAGE; chan->adapter.algo_data = &chan->algo; chan->adapter.dev.parent = &chan->par->pcidev->dev; - chan->algo.udelay = 40; + chan->algo.udelay = 10; chan->algo.timeout = 20; chan->algo.data = chan; -- Jean Delvare ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/