From 795659dc1ce275fcc39d6501affa0c03fd663038 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 27 Mar 2013 17:06:41 +0000 Subject: README: document the requirements for CONFIG_SYS_HZ CONFIG_SYS_HZ must be 1000, and get_timer() must therefore return ms. Document this. README text provided by Tom Rini. Signed-off-by: Stephen Warren --- README | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/README b/README index 1d51828252..57010161f5 100644 --- a/README +++ b/README @@ -496,6 +496,13 @@ The following options need to be configured: exists, unlike the similar options in the Linux kernel. Do not set these options unless they apply! +- CPU timer options: + CONFIG_SYS_HZ + + The frequency of the timer returned by get_timer(). + get_timer() must operate in milliseconds and this CONFIG + option must be set to 1000. + - Linux Kernel Interface: CONFIG_CLOCKS_IN_MHZ -- cgit v1.2.1