linux-kernel - Re: [PATCH][RESEND] drm: panel-simple: add URT UMSH-8596MD-xT panel support

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Message-ID: <5612966D.3090507@maciej.szmigiero.name>
Date:	Mon, 05 Oct 2015 17:25:33 +0200
From:	"Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
To:	Thierry Reding <thierry.reding@...il.com>
CC:	dri-devel@...ts.freedesktop.org, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	David Airlie <airlied@...ux.ie>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][RESEND] drm: panel-simple: add URT UMSH-8596MD-xT panel
 support

Hi Thierry,

On 05.10.2015 13:01, Thierry Reding wrote:
>> On 01.09.2015 15:50, Maciej S. Szmigiero wrote:
>>> This patch adds support for United Radiant Technology
>>> UMSH-8596MD-xT 7.0" WVGA TFT LCD panels
>>> (both LVDS and parallel versions) to DRM
>>> panel-simple driver.
>>>
>>> Signed-off-by: Maciej Szmigiero <mail@...iej.szmigiero.name>
>>> ---
>>> This is a resend without changes.
>>>
>>> diff --git a/Documentation/devicetree/bindings/panel/urt,umsh-8596md.txt b/Documentation/devicetree/bindings/panel/urt,umsh-8596md.txt
>>> new file mode 100644
>>> index 0000000..2990e6b
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/panel/urt,umsh-8596md.txt
>>> @@ -0,0 +1,11 @@
>>> +United Radiant Technology UMSH-8596MD-xT 7.0" WVGA TFT LCD panel
>>> +
>>> +Supported are LVDS versions (-11T, -19T) and parallel ones
>>> +(-T, -1T, -7T, -20T).
> 
> Please don't use this kind of wildcard compatible values. If these are
> different models then each of them deserves a separate compatible
> string.

The differences between these revisions are like different maximum backlight
luminance or presence / absence of touch panel.

None of this changes panel timings - should they be split into different
compatible values anyway?

>>> You might want to
>>> split the DT binding and vendor prefix to separate patches.
>>
>> Do you mean to first submit new vendor prefix then panel patch with docs?
>> Or even docs separately?
> 
> This should be three patches: the vendor prefix is usually a separate
> patch and needs an Acked-by from one of the device tree bindings
> maintainers. The binding itself should also be a separate patch and the
> driver changes should come last.

I will split the patch and first submit DT binding docs.

> Thierry

Best regards,
Maciej

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