[U-Boot-Users] [Patch] OMAP MPU timers fix

Todd Allan todd_allan at picovex.com
Thu Aug 17 01:06:30 CEST 2006


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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