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

Wolfgang Grandegger wg at grandegger.com
Mon Apr 20 19:01:10 EST 2009

Hi Ben,

Wolfgang Grandegger wrote:
> Wolfgang Grandegger wrote:
>> Kumar Gala wrote:
>>> On Apr 8, 2009, at 2:25 AM, Wolfgang Grandegger wrote:
>>>>> 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.
>>>> Wolfgang.
>>> Can the output be fixed.  0 Hz seemed bad to me.
>> Of course. No info message will be printed for the legacy case
>> like it was with the old driver version. I just realized a bug in the
>> MPC52xx part. Will send patches tomorrow, after some more thorough testing.
> The patch below fixes both issues. Ben, could you please apply it. Sorry for
> the inconvenience caused.
> Thanks,
> Wolfgang.
> [PATCH] i2c: i2c-mpc: bug fix for MPC52xx clock setting and printout
> The clock setting did not work for the MPC52xx due to a stupid bug.
> Furthermore, the dev info output "clock=0" for old device trees was
> misleading. This patch fixes both issues.
> Signed-off-by: Wolfgang Grandegger <wg at grandegger.com>

Could you please apply this bug-fix for the MPC driver for 2.6.30.




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