I2C driver for SAA7121 on MPC855 and linux-2.4.25

Li Yang-r58472 LeoLi at freescale.com
Thu Aug 24 20:49:18 EST 2006

> -----Original Message-----
> From: linuxppc-embedded-bounces+leoli=freescale.com at ozlabs.org
> [mailto:linuxppc-embedded-bounces+leoli=freescale.com at ozlabs.org] On
Behalf Of
> Xu, Li (GE, Research)
> Sent: Thursday, August 24, 2006 4:02 PM
> To: linuxppc-embedded at ozlabs.org
> Subject: I2C driver for SAA7121 on MPC855 and linux-2.4.25
> Hi,
> I am trying to setup i2c driver for saa7121 on my mpc855 based board
> normally the address for saa7121 is 0x88, but when I enable i2c bus
> scan, the driver detect it's address is 0x34, so I just stick to 0x34.

Is it the only device on i2c bus? 
> Anyway, I can write to saa7121via i2c bus successfully, but I can't
> color bar, so I don't know whether the driver is working properly or

Are you sure you are operating on the correct device?  What operation
can you do successfully on the device?  Can you read from the i2c bus?
> BTW, I setup I2C driver for SAA7113 and it works fine.
> Tim

More information about the Linuxppc-embedded mailing list