[U-Boot] [PATCH 07/18] rockchip: timer: implement timer_get_boot_us

[Simon Glass]

On 16 August 2017 at 11:32, Philipp Tomsich
<philipp.tomsich at theobroma-systems.com> wrote:
> 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).
>
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
>
>  drivers/timer/rockchip_timer.c | 72 +++++++++++++++++++++++++++++++++++++++---
>  1 file changed, 67 insertions(+), 5 deletions(-)

Reviewed-by: Simon Glass <sjg at chromium.org>