linux-kernel - Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix

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Date:	Tue, 25 Aug 2015 09:21:51 +0800
From:	Yakir Yang <ykk@...k-chips.com>
To:	Rob Herring <robherring2@...il.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Heiko Stuebner <heiko@...ech.de>,
	Thierry Reding <treding@...dia.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Inki Dae <inki.dae@...sung.com>, Joe Perches <joe@...ches.com>,
	Sean Paul <seanpaul@...gle.com>, Takashi Iwai <tiwai@...e.de>,
	dri-devel <dri-devel@...ts.freedesktop.org>,
	Andrzej Hajda <a.hajda@...sung.com>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	Vincent Palatin <vpalatin@...omium.org>,
	linux-rockchip@...ts.infradead.org,
	Kishon Vijay Abraham I <kishon@...com>,
	David Airlie <airlied@...ux.ie>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Doug Anderson <dianders@...gle.com>,
	Rob Herring <robh+dt@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Mark Yao <mark.yao@...k-chips.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Daniel Kurtz <djkurtz@...gle.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Kumar Gala <galak@...eaurora.org>,
	Ajay kumar <ajaynumb@...il.com>,
	Andy Yan <andy.yan@...k-chips.com>
Subject: Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for
 analogix_dp



在 2015/8/24 22:48, Rob Herring 写道:
> On Mon, Aug 24, 2015 at 7:57 AM, Russell King - ARM Linux
> <linux@....linux.org.uk> wrote:
>> On Sun, Aug 23, 2015 at 06:23:14PM -0500, Rob Herring wrote:
>>> On Wed, Aug 19, 2015 at 9:50 AM, Yakir Yang <ykk@...k-chips.com> wrote:
>>>> +       -analogix,color-depth:
>>>> +               number of bits per colour component.
>>>> +                       COLOR_6 = 0, COLOR_8 = 1, COLOR_10 = 2, COLOR_12 = 3
>>> This seems pretty generic. Just use 6, 8, 10, or 12 for values. And
>>> drop the vendor prefix.
>> Please think about this some more.  What does "color-depth" mean?  Does it
>> mean the number of bits per colour _component_, or does it mean the total
>> number of bits to represent a particular colour.  It's confusing as it
>> stands.
> Then "component-color-bpp" perhaps?

Actually this "color-bpp" should come from crtc driver, maybe should 
come from
"struct drm_crtc {".

Like rockchip stuffs, analogix_dp-rockchip call an mode_config from 
rockchip_drm_vop
driver and set output mode to RGB[10:10:10], then vop driver just store 
the output mode
type to the private struct "vop->connecot_out_mode". do think that this 
outmode should
store into crtc, not just come from DT prop.

- Yakir

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