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Date:   Fri, 10 Aug 2018 09:49:16 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Maxime Jourdan <maxi.jourdan@...adoo.fr>,
        Rob Herring <robh@...nel.org>
Cc:     Kevin Hilman <khilman@...libre.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic <linux-amlogic@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 4/4] drm/meson: convert to the new canvas module

On 10/08/2018 08:35, Maxime Jourdan wrote:
> 2018-08-10 0:41 GMT+02:00 Rob Herring <robh@...nel.org>:
>> Hi, this is an automated email from Rob's (experimental) review bot. I
>> found a couple of common problems with your patch. Please see below.
>>
>> On Wed,  1 Aug 2018 20:51:28 +0200, Maxime Jourdan wrote:
>>> This removes the meson_canvas files within the meson/drm layer
>>> and makes use of the new canvas module that is referenced in the dts.
>>>
>>> Canvases can be used by different IPs and modules, and it is as such
>>> preferable to rely on a module that can safely dispatch canvases on
>>> demand.
>>>
>>> Signed-off-by: Maxime Jourdan <maxi.jourdan@...adoo.fr>
>>
>> The preferred subject prefix is "dt-bindings: <binding dir>: ...".
>>
>>> ---
>>>  .../bindings/display/amlogic,meson-vpu.txt    |  9 +--
>>>  arch/arm64/boot/dts/amlogic/meson-gx.dtsi     |  7 +-
>>>  drivers/gpu/drm/meson/Kconfig                 |  1 +
>>>  drivers/gpu/drm/meson/Makefile                |  2 +-
>>>  drivers/gpu/drm/meson/meson_canvas.c          | 70 -------------------
>>>  drivers/gpu/drm/meson/meson_canvas.h          | 42 -----------
>>>  drivers/gpu/drm/meson/meson_crtc.c            |  5 +-
>>>  drivers/gpu/drm/meson/meson_drv.c             | 35 ++++++----
>>>  drivers/gpu/drm/meson/meson_drv.h             |  5 +-
>>>  drivers/gpu/drm/meson/meson_plane.c           |  3 +-
>>>  drivers/gpu/drm/meson/meson_viu.c             |  1 -
>>>  11 files changed, 39 insertions(+), 141 deletions(-)
>>>  delete mode 100644 drivers/gpu/drm/meson/meson_canvas.c
>>>  delete mode 100644 drivers/gpu/drm/meson/meson_canvas.h
>>>
>>
>> DT bindings (including binding headers) should be a separate patch. See
>> Documentation/devicetree/bindings/submitting-patches.txt.
>>
> 
> Hi, What's the standard procedure here ? The reason I kept
> devicetree+drm changes together is because I didn't want to have
> floating commits that would break the drm module.
> 
> Should I split the changes anyway ?
> 
> Maxime
> 

Yep, split the dt-bindings and the code change.

In a non-perfect work, it could be great to keep the "old" canvas until
everything is merged, except if Kevin let me merge everything (including DT) in drm-misc.

Neil

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