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

On 03/22/2013 03:12 PM, Wolfgang Denk wrote:

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 ...

It seems that's true.

...

+- 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.

That is not what that sentence means.