On Thu, Sep 3, 2009 at 6:47 PM, Vinayagam Mariappan<[email protected]> wrote: > > Hi all, > We have TFT LCD of resolution 480X272 > And spec says Hsync 17.28Khz and DCLK 9MKz and Vsync of 60Hz > I tried > dispc_reg_out(VENC_HSPLS,32); > dispc_reg_out(VENC_HSTART,41); > dispc_reg_out(VENC_HVALID,(videomode->xres)); > dispc_reg_out(VENC_HINT,videomode->xres + videomode->left_margin + > videomode->right_margin - 1); > dispc_reg_out(VENC_VSPLS,10); > dispc_reg_out(VENC_VSTART,12); > dispc_reg_out(VENC_VVALID,(videomode->yres)); > dispc_reg_out(VENC_VINT,80); > dispc_reg_out(VENC_VINT,videomode->yres + videomode->upper_margin + > videomode->lower_margin); > dispc_reg_out(VENC_VVALID, (videomode->yres)); > > > But i am getting some color bar pattern which keeps in scrolling in > LCD(red,blue,cyan bars) once the system boots. > Suggest us if there is any probs in setting.. > > > If any body has sample or any reference suggest us. > > -- > Regards, > Vinayagam M > > VeNMSOL Technologies, > > #7A, First Cross Street, Ganapathy Colony, > > Ekkaduthangal, Chennai - 600 032,India. > > Tel:+91-44-4353 0168;Mobile:+91-9445-019919 > > URL: www.venmsol.com > "We make a living by what we get, we make a life by what we give...- Unknown > "
Hi Vinayagam, First you should measure Pixel clock, H Sync and V Sync value using CRO and confirm them. Also do you have enabled LCD_OUT signal, if so, measure same. It's frequency should match with HSync. Did you taken HS / VS sync and start value from data sheet ? I have bit doubt with this value. Regards, Viral _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
