diff options
| author | Simon Glass <sjg@chromium.org> | 2016-02-24 09:14:49 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-02-26 08:53:10 -0700 |
| commit | c95fec31928d7e2596364ee1d226b52ffd7793f2 (patch) | |
| tree | 07972d661c4ce017dbaa2d5e8ce488717aed6cdd /drivers/timer | |
| parent | 4f051824b5c2a6bf8d3114c772676977fb95969a (diff) | |
timer: Provide an early timer
In some cases the timer must be accessible before driver model is active.
Examples include when using CONFIG_TRACE to trace U-Boot's execution before
driver model is set up. Enable this option to use an early timer. These
functions must be supported by your timer driver: timer_early_get_count()
and timer_early_get_rate().
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/timer')
| -rw-r--r-- | drivers/timer/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig index ff65a731def..cb18f12fc99 100644 --- a/drivers/timer/Kconfig +++ b/drivers/timer/Kconfig @@ -9,6 +9,16 @@ config TIMER will be used. The timer is usually a 32 bits free-running up counter. There may be no real tick, and no timer interrupt. +config TIMER_EARLY + bool "Allow timer to be used early in U-Boot" + depends on TIMER + help + In some cases the timer must be accessible before driver model is + active. Examples include when using CONFIG_TRACE to trace U-Boot's + execution before driver model is set up. Enable this option to + use an early timer. These functions must be supported by your timer + driver: timer_early_get_count() and timer_early_get_rate(). + config ALTERA_TIMER bool "Altera timer support" depends on TIMER |