From: Todd Allan <todd_allan@picovex.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] [Patch] OMAP MPU timers fix
Date: Wed, 16 Aug 2006 16:06:30 -0700 [thread overview]
Message-ID: <44E3A4F6.7000004@picovex.com> (raw)
The OMAP OSK5912 board code assumes U-Boot is entered with MPU timer 1
stopped. If entered via the reset vector from OS code that left the
timer running, the Load Timer Register value won't be loaded into the
timer when the Control Timer Register value is set, as expected. Since
the timer is placed into one-shot (not auto-reload) mode, the timer may
reach zero and stay at zero, causing udelay() to hang.
The attached patch is suggested for the 5912 OSK. It stops the timer,
leaving the input reference clock enabled, prior to starting. A glance
at the code would indicate that the 1610 Innovator and 730 P2 boards
could use this fix as well; I can send patches if desired, but have no
hardware on which to test.
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reply other threads:[~2006-08-16 23:06 UTC|newest]
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