Re: [PATCH] OMAP2: Fix a cpu type check problem.

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On 08/11/10 13:27, Tony Lindgren wrote:
> * Premi, Sanjeev <premi@xxxxxx> [100811 12:45]:
>   
>>> -----Original Message-----
>>> From: linux-omap-owner@xxxxxxxxxxxxxxx 
>>> [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of Tony Lindgren
>>> Sent: Wednesday, August 11, 2010 2:50 PM
>>> To: Igor Grinberg
>>> Cc: Stanley.Miao; linux-omap@xxxxxxxxxxxxxxx
>>> Subject: Re: [PATCH] OMAP2: Fix a cpu type check problem.
>>>
>>> * Igor Grinberg <grinberg@xxxxxxxxxxxxxx> [100810 17:25]:
>>>       
>>>> On 08/10/10 15:36, Stanley.Miao wrote:
>>>>         
>>>>> cpu_is_omap3517() and cpu_is_omap3505() are the subgroups 
>>>>>           
>>> of cpu_is_omap34xx(),
>>>       
>>>>> so we should check cpu_is_omap3517() and 
>>>>>           
>>> cpu_is_omap3505() first, then check
>>>       
>>>>> cpu_is_omap34xx().
>>>>>
>>>>> Signed-off-by: Stanley.Miao <stanley.miao@xxxxxxxxxxxxx>
>>>>>   
>>>>>           
>>>> Tested-by: Igor Grinberg <grinberg@xxxxxxxxxxxxxx>
>>>>
>>>> I've just ran into this yesterday evening.
>>>> Having a patch for this on the next day made me :)
>>>> Tested on AM3517.
>>>>         
>>> Can you please describe what breaks so we can merge this as a fix?
>>>
>>>       
>> cpu_is_34xx() will be true for all OMAP3 based devices including
>> AM3517. So, if we want to perform operations specific to AM3517, the
>> check for AM3517 should be done first else you match for 34xx would
>> return true; and you wouldn't go far enough to check for am3517.
>>     
> Understood, but we need some concrete error like "otherwise booting
> xyz board fails with non-working USB" or similar.
>   

Otherwise, All AM35XX (Sitara) clocks do not get registered and device
drivers
(ti_hecc, etc...) that depend on those clocks are failing to get the
clock and
end up with non working device.

> Tony
>
>   

-- 
Regards,
Igor.

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