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| /rk3399_rockchip-uboot/drivers/timer/ |
| H A D | rockchip_timer.c | fdb357172f10fe474659af44d8a86904dd207ea5 Mon Sep 11 20:04:16 UTC 2017 Philipp Tomsich <philipp.tomsich@theobroma-systems.com> UPSTREAM: rockchip: timer: implement timer_get_boot_us
To make the Rockchip DM timer driver useful for the timing of
bootstages, we need a few enhancements:
- This implements timer_get_boot_us.
- This avoids reinitialising the timer, if it has already been
set up (e.g. by our TPL and SPL stages). Now, we have a single
timebase ticking from TPL through the full U-Boot.
- This adds support for reading the timer even before the
device-model is ready: we find the timer via /chosen/tick-timer,
then read its address and clock-frequency, and finally read the
timeval directly).
Change-Id: I5f7d06f77c143482b28db7471600fdc5f39b824c
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
(cherry picked from commit cc7ce94e02799c5caa6d9c89350152f00ba3eb90)
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