[PATCH v3 0/5] i2c: i2c-mpc: make I2C bus speed configurable

Wolfgang Grandegger wg at grandegger.com
Wed Apr 8 17:25:19 EST 2009

Kumar Gala wrote:
> On Apr 8, 2009, at 12:11 AM, Kumar Gala wrote:
>> On Apr 7, 2009, at 3:20 AM, Wolfgang Grandegger wrote:
>>> This patch series makes the I2C bus speed configurable by using the
>>> I2C node property "clock-frequency". If the property is not defined,
>>> the old fixed clock settings will be used for backward compatibility.
>>> The property "fsl,preserve-clocking" allows to inherit the settings
>>> from the bootloader. Furthermore, it does some cleanup and uses the
>>> new bindings for the Socrates board:
>>> i2c: i2c-mpc: various coding style fixes
>>> i2c: i2c-mpc: use dev based printout function
>>> i2c: i2c-mpc: make I2C bus speed configurable
>> It looks like Ben picked up these patches.
>>> powerpc: i2c-mpc: document new FSL I2C bindings and cleanup
>>> powerpc/85xx: i2c-mpc: use new I2C bindings for the Socates board
>> I would have preferred these two go via me, but it looks like the
>> board one got picked up by Ben.  I'll deal with the doc/binding update.
>>> Ben, could you please consider this patch series for inclusion into
>>> 2.6.30
> So I'm a bit concerned with the output we now get:
> mpc-i2c fffe03000.i2c: clock 0 Hz (dfsrr=16 fdr=49)
> why 0? is that right?

This is the backward compatibility mode using hard-coded FDR values. The
output is missleading, I agree.


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