Message-id: <54D450B6.6010409@samsung.com>
Date: Fri, 06 Feb 2015 14:27:18 +0900
From: Joonyoung Shim <jy0922.shim@samsung.com>
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To: Javier Martinez Canillas <javier.martinez@collabora.co.uk>,
        Andrzej Hajda <a.hajda@samsung.com>, linux-samsung-soc@vger.kernel.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
        Kyungmin Park <kyungmin.park@samsung.com>,
        Kukjin Kim <kgene@kernel.org>, Liquid.Acid@gmx.net,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        dri-devel@lists.freedesktop.org
Subject: Re: [RFC PATCH 0/3] Fix power domains handling on exynos542x
References: <1423139739-19881-1-git-send-email-a.hajda@samsung.com>
 <54D381F4.2080701@collabora.co.uk>
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Hi,

On 02/05/2015 11:45 PM, Javier Martinez Canillas wrote:
> Hello Andrzej,
> 
> Thanks a lot for finally finding what was causing the HDMI issue.
> 
> On 02/05/2015 01:35 PM, Andrzej Hajda wrote:
>> Hi,
>>
>> Exynos chipsets since 542x have asynchronous bridges connecting different IPs.
>> These bridges should be operational during power domain switching, ie associated
>> clocks cannot be gated.
>> This patchset adds binding to provide such clocks per power domain and adds code
>> which enables them during domain on/off operation.
>>
>> This patchset fixes power domain issues with disp1 domain and HDMI (some of them)
>> on Odroid XU3:
>> - disp1 power domain can be turned off,
>> - no more "imprecise external abort" faults.
>>
>> The patchset is based on '[PATCH v5 0/9] Enable HDMI support on Exynos platforms' [1].
>>
> 
> It also depends on '[PATCH 0/2] Add HDMI support for Exynos5420 platform' [2].
> 
>> It was successfully tested on OdroidXU3.
>>
>> [1]: http://permalink.gmane.org/gmane.linux.kernel.samsung-soc/42743
> 
> Your patches looks good to me so please feel free to add:
> 
> Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> 
> I also tested on an Exynos5420 Peach Pit Chromebook and both the "Power
> domain power-domain disable failed" message and the system crash are gone.
> 

Really gone out "Power domain power-domain disable failed" message?

Still i get the message from second try,

# modetest -M exynos -s 23@21:1920x1080
setting mode 1920x1080@XR24 on connectors 23, crtc 21

# modetest -M exynos -s 23@21:1920x1080
setting mode 1920x1080@XR24 on connectors 23, crtc 21

[   39.608881] Power domain power-domain disable failed
# modetest -M exynos -s 23@21:1920x1080
setting mode 1920x1080@XR24 on connectors 23, crtc 21

[   42.827637] Power domain power-domain disable failed
...

Thanks.

> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> 
> Best regards,
> Javier
> 
> [2]: https://lkml.org/lkml/2015/1/20/235
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