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authorwdenk <wdenk>2004-01-31 20:06:54 +0000
committerwdenk <wdenk>2004-01-31 20:06:54 +0000
commit75d1ea7f6aa00c280c495a1ff6502f091c4244fe (patch)
treebb1ee058f8886ae42cb85a6b2c82f3d6b18661bf /doc
parent6876609446980c3055bbd32c195a63330e21d8e6 (diff)
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Fix variable CPU clock for MPC859/866 systems for low CPU clocks
Diffstat (limited to 'doc')
-rw-r--r--doc/README.MPC8664
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/README.MPC866 b/doc/README.MPC866
index 1464a40..42abac8 100644
--- a/doc/README.MPC866
+++ b/doc/README.MPC866
@@ -12,6 +12,10 @@ If the "cpuclk" environment variable value is within the CPUCLK_MIN /
CPUCLK_MAX limits, the specified value is used. Otherwise, the
default CPU clock value is set.
+Please make sure you understand what you are doing, and understand
+the restrictions of your hardware (board, processor). For example,
+ethernet will stop working for CPU clock frequencies below 25 MHz.
+
Please note that for now the new clock-handling code has been enabled
for the TQM866M board only, even though it should be pretty much
common for other MPC859 / MPC866 based boards also. Our intention