From: Jean Delvare 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 Acked-by: Benjamin Herrenschmidt Cc: "Antonino A. Daplas" Signed-off-by: Andrew Morton --- drivers/video/aty/radeon_i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN drivers/video/aty/radeon_i2c.c~radeonfb-speed-up-the-i2c-buses drivers/video/aty/radeon_i2c.c --- a/drivers/video/aty/radeon_i2c.c~radeonfb-speed-up-the-i2c-buses +++ a/drivers/video/aty/radeon_i2c.c @@ -78,7 +78,7 @@ 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; _