Re: [U-Boot] [PATCH] README: document the requirements for CONFIG_SYS_HZ

22 Mar 2013

      Dear Stephen,
In message 1363923692-12748-1-git-send-email-swarren@wwwdotorg.org you wrote:
...
CONFIG_SYS_HZ must be 1000, and get_timer() must therefore return mS.
Document this.
"must return mS" ? "mS" means Milli-Siemens, which is a unit of
electric conductance and electric admittance.  You mean "ms" =
milliseconds ...
...
+- CPU timer options:

CONFIG_SYS_HZ

The frequency of the timer returned by get_timer(). This value

MUST be 1000.

This is misleading, or even incorrect.  If I read this, I would expect
that get_timer() returns 1000. Obviously, this is incorrect.  Instead,
get_timer() returns timestamp information in millisecond resolution.
Best regards,
Wolfgang Denk
-- 
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