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| author | Simon Glass <sjg@chromium.org> | 2020-07-09 18:43:14 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-17 14:32:24 +0800 |
| commit | e1ddf67cb3982b5c49c1165da87917a82a285783 (patch) | |
| tree | 1361a00a2d8d7a282be4e6c529539ecd8acabc70 /include/dma.h | |
| parent | ce04a9020c41a2ebf1d85e01532da69d2d2e2119 (diff) | |
| download | u-boot-e1ddf67cb3982b5c49c1165da87917a82a285783.tar.gz u-boot-e1ddf67cb3982b5c49c1165da87917a82a285783.tar.xz u-boot-e1ddf67cb3982b5c49c1165da87917a82a285783.zip | |
timer: Allow delays with a 32-bit microsecond timer
The current get_timer_us() uses 64-bit arithmetic on 32-bit machines.
When implementing microsecond-level timeouts, 32-bits is plenty. Add a
new function that uses an unsigned long. On 64-bit machines this is
still 64-bit, but this doesn't introduce a penalty. On 32-bit machines
it is more efficient.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'include/dma.h')
0 files changed, 0 insertions, 0 deletions