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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [DSI BYT] Panel detection fail"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100356#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [DSI BYT] Panel detection fail"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100356">bug 100356</a>
from <span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span></b>
<pre>(In reply to Pavel from <a href="show_bug.cgi?id=100356#c12">comment #12</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=132718" name="attach_132718" title="4.12 drm-tip debug 0xe">attachment 132718</a> <a href="attachment.cgi?id=132718&action=edit" title="4.12 drm-tip debug 0xe">[details]</a></span>
> 4.12 drm-tip debug 0xe</span >
[ 2.954679] [drm:intel_dsi_init [i915]] *ERROR* Failed to own gpio for panel
control
[ 2.954783] [drm:pwm_setup_backlight [i915]] *ERROR* Failed to own the pwm
chip
So looks like you might still be missing some of the needed kernel config
options listed in <a href="show_bug.cgi?id=100356#c2">comment 2</a>.
[ 4.026941] i2c_designware 80860F41:00: controller timed out
[ 4.054787] i2c_designware 80860F41:00: timeout in disabling adapter
[ 4.077474] i2c_designware 80860F41:00: timeout waiting for bus ready
And it looks like there's something wrong with i2c. Not sure if those might
affect the display as well somehow. At least we don't do any direct i2c banging
from DSI code so these shouldn't be coming directly from i915 at least.</pre>
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