linux-kernel - Re: [PATCH] add hardware I2C support for ARM IMX23

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Date:	Wed, 28 Nov 2012 19:58:21 +0100
From:	"sander van ginkel" <sander@...-ginkel.eu>
To:	"Tim Michals" <tcmichals@...il.com>
Cc:	"Wolfram Sang" <w.sang@...gutronix.de>,
	linux-arm-kernel@...ts.infradead.org, shawn.guo@...aro.org,
	linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH] add hardware I2C support for ARM IMX23

> 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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