Re: [PATCH 0/2] media: ov7670: fix regressions caused by "hook s_power onto v4l2 core"

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On 13.03.2019 23:05, Sakari Ailus wrote:

> On Tue, Mar 12, 2019 at 06:16:08PM +0100, Lubomir Rintel wrote:
>> On Tue, 2019-03-12 at 00:36 +0900, Akinobu Mita wrote:
>>> This patchset fixes the problems introduced by recent change to ov7670.
>>>
>>> Akinobu Mita (2):
>>>    media: ov7670: restore default settings after power-up
>>>    media: ov7670: don't access registers when the device is powered off
>>>
>>>   drivers/media/i2c/ov7670.c | 32 +++++++++++++++++++++++++++-----
>>>   1 file changed, 27 insertions(+), 5 deletions(-)
>>>
>>> Cc: Lubomir Rintel <lkundrak@xxxxx>
>>> Cc: Jonathan Corbet <corbet@xxxxxxx>
>>> Cc: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
>>> Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
>>
>> For the both patches in the set:
>>
>> Reviewed-by: Lubomir Rintel <lkundrak@xxxxx>
>> Tested-by: Lubomir Rintel <lkundrak@xxxxx>
> 
> Thanks, guys!
> 

Hi Akinobu,

I am having issues with this sensor, and your patches do not fix them 
for me ( maybe they are not supposed to )

My issues are like this: once I set a format and start streaming, if I 
stop streaming and reconfigure the format , for example YUYV after RAW, 
or RGB565 after RAW and viceversa, the sensor looks to have completely 
messed up settings: images obtained are very bad.
This did not happen for me with older kernel version (4.14 stable for 
example).
I can help with testing patches if you need.
My setup is with atmel-isc with parallel interface on board at91 
sama5d2_xplained

Hope this helps,

Eugen




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