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Setting I2C Bus frequency

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Old 11-11-2009
Question Setting I2C Bus frequency
Hi All,

For Linux Kernel 2.6.26 :

I am using a I2C bus for command interface from my system when connecting to different devices. I have different I2C frequency requirements from different devices. Can you please suggest me a way to set the I2C frequency based on the device in use at runtime?

-mist
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LEARN ABOUT OPENSOLARIS

smbus

smbus(7D)							      Devices								 smbus(7D)

NAME

       smbus - System Management Bus controller driver

DESCRIPTION

       The  smbus driver is a I2C (Inter IC) nexus driver that allows the system to communicate with various system	 component chips. SMBus is
       a two-wire control bus based on the I2C protocol through which systems can communicate with various I2C devices connected to the bus.

       The smbus driver supports byte and block level transfer based on interrupt and polled mode.

FILES

       /platform/sun4u/kernel/drv/sparcv9/smbus

	   64 bit ELF kernel module

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcarx			   |
       +-----------------------------+-----------------------------+
       |Architecture		     |SPARC			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

       Writing Device Drivers

       System Management Bus (SMBus) Specification 2.0 -- SBS  Implementation Forum

       The I2C Bus and How To Use It --Philips Semiconductor Document # 98-8080-575-01

SunOS 5.11							   23 July 2003 							 smbus(7D)