From: Jean Delvare <khali@linux-fr.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-fbdev-devel@lists.sourceforge.net
Subject: [PATCH 1/3] radeonfb: Speed up the I2C buses
Date: Tue, 12 Feb 2008 10:19:15 +0100 [thread overview]
Message-ID: <20080212101915.1dce8475@hyperion.delvare> (raw)
There is no reason to drive the radeon I2C buses 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.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
---
This patch was already sent on:
* 2007-03-08
* 2007-09-09
drivers/video/aty/radeon_i2c.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.21-git.orig/drivers/video/aty/radeon_i2c.c 2007-05-09 10:52:26.000000000 +0200
+++ linux-2.6.21-git/drivers/video/aty/radeon_i2c.c 2007-05-09 10:55:51.000000000 +0200
@@ -77,7 +77,7 @@ static int radeon_setup_i2c_bus(struct r
chan->algo.setscl = radeon_gpio_setscl;
chan->algo.getsda = radeon_gpio_getsda;
chan->algo.getscl = radeon_gpio_getscl;
- chan->algo.udelay = 40;
+ chan->algo.udelay = 10;
chan->algo.timeout = 20;
chan->algo.data = chan;
--
Jean Delvare
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next reply other threads:[~2008-02-12 9:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-12 9:19 Jean Delvare [this message]
2008-02-12 20:56 ` [PATCH 1/3] radeonfb: Speed up the I2C buses Benjamin Herrenschmidt
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