<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">fyi<br><div><br><div>Begin forwarded message:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>From: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Carsten Haitzler (The Rasterman) <<a href="mailto:raster@openmoko.org">raster@openmoko.org</a>></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>Date: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica">March 10, 2008 4:23:54 PM GMT+08:00</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>To: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Andy Green <<a href="mailto:andy@openmoko.com">andy@openmoko.com</a>></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>Cc: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Wolfgang Spraul <<a href="mailto:wolfgang@openmoko.com">wolfgang@openmoko.com</a>>, Sean Moss-Pultz <<a href="mailto:sean@openmoko.com">sean@openmoko.com</a>>, William Lai <<a href="mailto:will@openmoko.com">will@openmoko.com</a>>, "Tony Tu)" <<a href="mailto:tony@openmoko.com">tony@openmoko.com</a>>, matt_hsu <<a href="mailto:matt_hsu@openmoko.org">matt_hsu@openmoko.org</a>>, Chia-I Wu <<a href="mailto:olv@openmoko.com">olv@openmoko.com</a>>, Werner Almesberger <<a href="mailto:werner@openmoko.org">werner@openmoko.org</a>></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#000000" style="font: 12.0px Helvetica; color: #000000"><b>Subject: </b></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica"><b><URGENT> Re: LCM flicker</b></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div> </div>On Sun, 09 Mar 2008 21:45:05 +0000 Andy Green <<a href="mailto:andy@openmoko.com">andy@openmoko.com</a>> babbled:<br><br>i'm looking into it, but smedia are suggesting we play with:<br><br><br>SDRAM Driving Register 1 (0x1260) and we set the LCD IO Driver strength bits to<br>0x11 (x8 strength)<br><br>so maybe adding:<br><br>{ 0x1260, 0x3000 }<br><br>to the glamo_init_script[] in the kernel driver might be a good experiment. i<br>need to get my moko tree building again now that it broke today too -- so<br>anyone with a working tree and kernel, please try this (and add it to the<br>drivers/video/glamo/glamo-core.c code) as soon as u can and test it. i'll try<br>here too - but you may be there before me as you have a working tree/kernel<br>build.<br><br><blockquote type="cite">-----BEGIN PGP SIGNED MESSAGE-----<br></blockquote><blockquote type="cite">Hash: SHA1<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Somebody in the thread at some point said:<br></blockquote><blockquote type="cite"><blockquote type="cite">Somebody in the thread at some point said:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">hhmmm. then xrandr is lying to me, it claims 50hz. aqnd it claims 25hz for<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">landscape mode (which explains the much worse flicker).<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">It is true that landscape is 1/2 the rate of portrait currently, but 680<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">x 600 (the overscanned y and x) at 24.5MHz PCLK (41ns period) comes out<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">to 16.6ms == 60Hz.<br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">FWIW I eyeballed the VSYNC net directly and it is 60Hz for sure.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Also the pixel data lines appear to be driven with static levels when<br></blockquote><blockquote type="cite">you fill the framebuffer with the same solid data, therefore there is no<br></blockquote><blockquote type="cite">dynamic pixel data generation or transmission error to blame.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">If anyone wants to assess the flicker the way I tried is to stop at the<br></blockquote><blockquote type="cite">U-Boot shell and do<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">mw.w 0x08800000 0xa800 0x96000<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">The middle number is rrrr rggg gggb bbbb all msb-lsb<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">- -Andy<br></blockquote><blockquote type="cite">-----BEGIN PGP SIGNATURE-----<br></blockquote><blockquote type="cite">Version: GnuPG v1.4.7 (GNU/Linux)<br></blockquote><blockquote type="cite">Comment: Using GnuPG with Fedora - <a href="http://enigmail.mozdev.org">http://enigmail.mozdev.org</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">iD8DBQFH1FphOjLpvpq7dMoRAprkAJ0eZJ5I+SsJAuSGlvZviWrAdVpTUQCgh6lE<br></blockquote><blockquote type="cite">HAAegoP1WlsHxkjrUw4D5a0=<br></blockquote><blockquote type="cite">=m7zX<br></blockquote><blockquote type="cite">-----END PGP SIGNATURE-----<br></blockquote><br><br>-- <br>Carsten Haitzler (The Rasterman) <<a href="mailto:raster@openmoko.org">raster@openmoko.org</a>><br></blockquote></div><br></body></html>