linux-kernel - Re: [PATCH v4 3/3] media: mtk-mdp: Fix mdp device tree

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Date:   Wed, 7 Jun 2017 11:11:09 +0200
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Minghsiu Tsai <minghsiu.tsai@...iatek.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        daniel.thompson@...aro.org, Rob Herring <robh+dt@...nel.org>,
        Mauro Carvalho Chehab <mchehab@....samsung.com>,
        Daniel Kurtz <djkurtz@...omium.org>,
        Pawel Osciak <posciak@...omium.org>,
        Houlong Wei <houlong.wei@...iatek.com>
Cc:     srv_heupstream@...iatek.com,
        Eddie Huang <eddie.huang@...iatek.com>,
        Yingjoe Chen <yingjoe.chen@...iatek.com>,
        Wu-Cheng Li <wuchengli@...gle.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-media@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v4 3/3] media: mtk-mdp: Fix mdp device tree

On 07/06/17 11:07, Matthias Brugger wrote:
> 
> 
> On 07/06/17 10:56, Hans Verkuil wrote:
>> On 07/06/17 10:44, Matthias Brugger wrote:
>>> Hi Hans, hi Mauro,
>>>
>>> On 23/05/17 05:24, Minghsiu Tsai wrote:
>>>> From: Daniel Kurtz <djkurtz@...omium.org>
>>>>
>>>> If the mdp_* nodes are under an mdp sub-node, their corresponding
>>>> platform device does not automatically get its iommu assigned properly.
>>>>
>>>> Fix this by moving the mdp component nodes up a level such that they are
>>>> siblings of mdp and all other SoC subsystems.  This also simplifies the
>>>> device tree.
>>>>
>>>> Although it fixes iommu assignment issue, it also break compatibility
>>>> with old device tree. So, the patch in driver is needed to iterate over
>>>> sibling mdp device nodes, not child ones, to keep driver work properly.
>>>>
>>>> Signed-off-by: Daniel Kurtz <djkurtz@...omium.org>
>>>> Signed-off-by: Minghsiu Tsai <minghsiu.tsai@...iatek.com>
>>>> Signed-off-by: Matthias Brugger <matthias.bgg@...il.com>
>>>>
>>>
>>> Are you OK to take this patch, or do you have any further comments?
>>
>> Nope, it's all good. Queued for 4.13.
>>
> 
> Thanks!
> 
> I queued the other two in v4.12-next/dts64

Media bindings normally go through the media subsystem, but you've taken
that one as well? I need to know, because then I drop it in my tree.

Regards,

	Hans