[U-Boot-Users] asynchronous clocking mode for arm920t

Anders Larsen
2005-05-04T11:45:57Z

Steven Scholz <steven.scholz@imc-berlin.de> schreibt:
>So I'd say the asynchronous clocking mode is best for all arm920t cpus
>and
>thus maybe this is the better patch:
>
>Index: u-boot/cpu/arm920t/start.S

Hi Steven,

you're not supposed to switch clocking mode before the PLLs are
set up and have had time to stabilize. This takes place in the
first part of lowlevel_init, which is called _after_ the code
your patch touches.
If we switch clocking mode in start.S we can only do so after
lowlevel_init returns (a few lines further down).

Cheers
Anders