[Letux-kernel] [Kernel] [PATCH v2 4/5] ARM: dts: omap5: describe control for ckobuffer

Peter Ujfalusi peter.ujfalusi at ti.com
Mon May 9 15:52:44 CEST 2016


On 05/09/16 15:46, Peter Ujfalusi wrote:
> On 05/09/16 15:32, Peter Ujfalusi wrote:
>> On 05/09/16 15:10, Peter Ujfalusi wrote:
>>
>>>>> finally I found some time to apply your patches. Sorry for the long time.
>>>>>
>>>>> Unfortunately, it does not work. Neither on omap5evm nor on our omap5 hardware.
>>>>> I get no sound on the twl6040 - just white noise (which can be controlled in
>>>>> level through
>>>>> amixer so it is created on the digital input side of the twl6040).
>>>>>
>>>>> So I think your patch is missing a detail compared to my simple solution.
>>>>
>>>> Did you implement anything on the audio driver side? The audio driver must
>>>> enable the clock implemented by this patch.
>>>
>>> I did, can test it in 10 minutes or so...
>>
>> might work, but linux-next is not booting on omap5-uevm :o I don't know why...
> 
> Applying Tero's alone makes the board not to boot, so something there... I can
> not see anything even with low-level debugging enabled :( I can not debug it
> further today, will look at this tomorrow.

The crash is in arch/arm/mach-omap2/control.c:omap_control_init()

the syscon_node_to_regmap() returns with error for the new
omap5_scm_wkup_pad_conf node. The other syscon was OK, but becasue of the
return PTR_ERR(syscon) the board will not boot...

Tero: any idea?

>> In any case I have attached the 3 patches I have for this, including Tero's
>> ported to linux-next.
>>
>> Patch 3 might need to be done per board probably, but this should be good for
>> testing.
>>
>>
>>
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> 
> 


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