linux-kernel - Re: [PATCH-v4 00/11] i2c: pxa: Fixes, cleanup and support for pxa910 family

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Message-ID: <55AC9E05.7040308@linaro.org>
Date:	Mon, 20 Jul 2015 12:36:45 +0530
From:	Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
To:	Robert Jarzmik <robert.jarzmik@...e.fr>
CC:	Wolfram Sang <wsa@...-dreams.de>, linux-i2c@...r.kernel.org,
	robh+dt@...nel.org, yizhang@...vell.com,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH-v4 00/11] i2c: pxa: Fixes, cleanup and support for pxa910
 family



On Saturday 18 July 2015 01:19 AM, Robert Jarzmik wrote:
> Vaibhav Hiremath <vaibhav.hiremath@...aro.org> writes:
>
>>> So, I applied patches 1-6 to for-next to make some progress.
>>>
>>> The others need more thought because of the bindings which shall be
>>> discussed replying to the patches in question.
>>>
>>> Thanks for the updated work with lots of proper references.
>>>
>>
>> OK, Thanks and no issues.
>>
>> Lets discuss more on the bindings.
>
> I made a simple try on my reference platform with the whole patchset.
> It oopses on a NULL dereference.
>
> The stack is in [1].
> I think it boils down to :
>   - i2c_pxa_do_sclk_adj()
>     - reg_ilcr = readl(_ILCR(i2c));
>
> I also think the faulty patch is :
>   - i2c: pxa: Add ILCR (tLow & tHigh) configuration support
>
> My case, an I2C master case, I'd like you to find the issue and fix it.
>

Which is this reference platform?
Can you share few details -

  - reference Platform?
  - DT file if you could
  - Boot log (if you could)


I am using pxa1928 based platform, and I do not see any issues.

Thanks,
Vaibhav
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