[PATCH] add hardware I2C support for ARM IMX23

sander van ginkel sander at van-ginkel.eu
Wed Nov 28 13:58:21 EST 2012


> Sander,
>
> Just tested with "i2cdetc -y -r 0" that crashes with  "BUG: soft
lockup -
>> CPU#0 stuck for 22s!"
>> according to the docs (IMX23RM.pdf) the interrupts for I2C are 26
and 27
>> that why I assigned these two in the dts.
>>
>
> In your dts, is it 26, 27? Order matters, it should be 27, 26.
Error ISR,
> DMA.
>

Hi Tim,

Thanks for your suggestion. I swapped the numbers and it solved the crash.
However I still have to debug some more because it gives now :
  mxs-i2c 80058000.i2c: Failed to get PIO reg. write descriptor.

Thanks,

Sander




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