Re: [U-Boot] core ticks/timer code

Dear Mike Frysinger,

In message 200903272130.26825.vapier@gentoo.org you wrote:

unfortunately, there doesnt seem to be any docs on what exactly these functions do so it's hard for me to verify/change any of it.

If in doubt, look it up in the PowerPC implementation. That's the reference for what a half-way sane world could look like.

my understanding is that:

• get_ticks - return some notion of "cpu ticks"
• get_tbclk - return number of "cpu ticks" that elapse in one second
• timer_init - setup a core timer
• get_timer(x) - not really sure what this is supposed to represent, or ho> w

"x" is used

• reset_timer - reset core timer to 0
• CONFIG_SYS_HZ - no idea how this relates to ticks/timer in U-Boot as in the

Linux world, this is the core timer (scheduler) frequency (how many times to execute per second)

It's the number of ticks per second, i. e. 1000.

Best regards,

Wolfgang Denk