From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 41121] Apple Thunderbolt display is not initialized when
plugged into iMac 12,2 (Radeon 6870)
Date: Thu, 29 Sep 2011 08:01:27 -0700 (PDT)
Message-ID: <20110929150127.BFA521300DC@annarchy.freedesktop.org>
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https://bugs.freedesktop.org/show_bug.cgi?id=41121
--- Comment #8 from Alex Deucher 2011-09-29 08:01:27 PDT ---
It should still be retrying, just restructured slightly. The retry logic just
moved into radeon_dp_i2c_aux_ch(), radeon_dp_aux_native_write(), and
radeon_dp_aux_native_read(), e.g.,
else if ((ack & AUX_NATIVE_REPLY_MASK) ==
AUX_NATIVE_REPLY_DEFER)
udelay(400);
Perhaps the delay is causing a problem. Does removing the udelay(400); help?
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