From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Morsing Subject: Re: [PATCH 0/2] Add recommended bpp for omap dss2 generic dpi panels Date: Wed, 16 Feb 2011 16:42:38 +0100 Message-ID: <1297870958.8777.21.camel@morsing> References: <1297530130-10355-1-git-send-email-daniel.morsing@gmail.com> <1297861914.988.1.camel@deskari> <1297865193.8777.8.camel@morsing> <1297866996.988.69.camel@deskari> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-wy0-f174.google.com ([74.125.82.174]:35498 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751094Ab1BPPmI (ORCPT ); Wed, 16 Feb 2011 10:42:08 -0500 In-Reply-To: <1297866996.988.69.camel@deskari> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Tomi Valkeinen Cc: Tony Lindgren , Bryan Wu , "linux-fbdev@vger.kernel.org" , "linux-omap@vger.kernel.org" On Wed, 2011-02-16 at 16:36 +0200, Tomi Valkeinen wrote: > On Wed, 2011-02-16 at 08:06 -0600, Daniel Morsing wrote: > > Hi Tomi > >=20 > > On Wed, 2011-02-16 at 15:11 +0200, Tomi Valkeinen wrote: > > > Hi, > > >=20 > > > On Sat, 2011-02-12 at 11:02 -0600, Daniel Morsing wrote: > > > > The panel added is the 4.3 inch display that is sold with the > > > > Devkit8000. > > >=20 > > > Hmm. Devkit8000's panel is connected with 24 datalines, according= to the > > > board file. Why do you want to use 16 bpp format for that? > > >=20 > > > Tomi > > >=20 > >=20 > > Running the panel at 24 bpp or specifying 16 datalines causes color > > distortion. > >=20 > > The only way I've been able to run the panel without color distorti= on, > > is with 24 datalines and 16 bpp. > >=20 > > I'm not well versed in displays, so I might be making a mistake > > somewhere. The BSP for the devkit8000 doesn't include a datasheet f= or > > the panel, so I can't look into what's causing this weirdness. >=20 > I don't think I'll add a feature which doesn't make sense, to fix a > problem we don't understand =3D). >=20 > A datasheet I found mentions >=20 > "One 4.3=E2=80=9D TFT LCD (With Touch panel, CHI HSIN LR043JC211 LCD > Model)" >=20 > And I found: >=20 > http://www.timll.com/chinese/download/files/CHILIN_TECHNOLOGY.pdf >=20 > It looks like 24bpp display. >=20 Ok I looked through the datasheet and it looks to me that i got the .config field right. Only thing that's vague from that sheet is which pixel clock edge the v-sync and h-sync are driven low and the color distortion is still there with either option. > What kind of color distortion do you see? Perhaps the problem is > somewhere else, like wrong horizontal sync, vertical sync or pixel cl= ock > signal setting in .config field. This info should be in the panel > datasheet, but it usually takes some deciphering to understand it =3D= ). >=20 > Tomi >=20 I'm seeing a light cyan tint to everything when running at 24bpp. Using 16 datalines causes a heavy blue tint. Regards, Daniel Morsing -- To unsubscribe from this list: send the line "unsubscribe linux-omap" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html