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

CONFIG_SYS_HZ must be 1000, and get_timer() must therefore return mS. Document this.

Signed-off-by: Stephen Warren swarren@wwwdotorg.org --- README | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/README b/README index 7f2506a..1871ada 100644 --- a/README +++ b/README @@ -495,6 +495,12 @@ 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(). This value + MUST be 1000. + - Linux Kernel Interface: CONFIG_CLOCKS_IN_MHZ