Re: [PATCH 0/2] Add recommended bpp for omap dss2 generic dpi
From: Daniel Morsing <hidden>
Date: 2011-02-16 15:42:38
Also in:
linux-omap
On Wed, 2011-02-16 at 16:36 +0200, Tomi Valkeinen wrote:
On Wed, 2011-02-16 at 08:06 -0600, Daniel Morsing wrote:quoted
Hi Tomi On Wed, 2011-02-16 at 15:11 +0200, Tomi Valkeinen wrote:quoted
Hi, On Sat, 2011-02-12 at 11:02 -0600, Daniel Morsing wrote:quoted
The panel added is the 4.3 inch display that is sold with the Devkit8000.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? TomiRunning the panel at 24 bpp or specifying 16 datalines causes color distortion. The only way I've been able to run the panel without color distortion, is with 24 datalines and 16 bpp. 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 for the panel, so I can't look into what's causing this weirdness.I don't think I'll add a feature which doesn't make sense, to fix a problem we don't understand =). A datasheet I found mentions "One 4.3� TFT LCD (With Touch panel, CHI HSIN LR043JC211 LCD Model)" And I found: http://www.timll.com/chinese/download/files/CHILIN_TECHNOLOGY.pdf It looks like 24bpp display.
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 clock signal setting in .config field. This info should be in the panel datasheet, but it usually takes some deciphering to understand it =). Tomi
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-fbdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html