Display timings
We are trying to interface the SDT057TFT to an OMAP based SBC running linux and would like to obtain the video timing settings for it. I’ve been going over the HX8250 data-sheet but would like some confirmation for the following settings (640x480 resolution):
1. Horizontal synchronization pulse width
2. Horizontal front porch
3. Horizontal back porch
4. Vertical synchronization pulse width
5. Vertical front porch
6. Vertical back porch
7. Pixel clock
Also described at: <http://processors.wiki.ti.com/index.php/OMAP3_DSS2_Architecture>
Thanks,
Amos Kariuki
Was able to resolve this by letting the kernel auto-compute the video timings.
To auto-compute the timing (OMAP), supply the boot arg: omapfb.mode=lcd:640x480MR
Also the following configuration seemed to work:
dssdev->panel.config = OMAP_DSS_LCD_IPC | OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_ONOFF;
Amos Kariuki
Hello Armos,
Thanks for updating us.
