<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [nouveau, git regression] - I2C PWM fan control broken on nv50 adt7475 on kernels 3.3.x+" href="https://bugs.freedesktop.org/show_bug.cgi?id=60704#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [nouveau, git regression] - I2C PWM fan control broken on nv50 adt7475 on kernels 3.3.x+" href="https://bugs.freedesktop.org/show_bug.cgi?id=60704">bug 60704</a> from <a class="email" href="mailto:emil.l.velikov@gmail.com" title="Emil Velikov <emil.l.velikov@gmail.com>"> Emil Velikov</a> <pre>Created <a href="attachment.cgi?id=74708" name="attach_74708" title="Use 25kbps datarate for i2c transfers">attachment 74708</a> <a href="attachment.cgi?id=74708&action=edit" title="Use 25kbps datarate for i2c transfers">[details]</a> <a href='page.cgi?id=splinter.html&bug=60704&attachment=74708'>[review]</a> Use 25kbps datarate for i2c transfers The offending commit has been almost completely reverted later on The only differences being * timeout (5000 > 2200) Data is based on the VESA spec * bitrate (12,5kbps > 50kbps) Bitrate of 50kbps is quite reasonable, considering the standards There are a few possible solutions A select correct delay depending on the i2c port type B presence of adt7475(and other) i2c sensor(s) in the extdev vbios table C use 25kbps for all transfers D quirk it Patch for option C is attached</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>