upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/test/py/tests/test_sleep.py

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# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
import pytest
import time
"""
Note: This test doesn't rely on boardenv_* configuration values but they can
change test behavior.
# Setup env__sleep_accurate to False if time is not accurate on your platform
env__sleep_accurate = False
"""
def test_sleep(u_boot_console):
"""Test the sleep command, and validate that it sleeps for approximately
the correct amount of time."""
sleep_skip = u_boot_console.config.env.get('env__sleep_accurate', True)
if not sleep_skip:
pytest.skip('sleep is not accurate')
if u_boot_console.config.buildconfig.get('config_cmd_misc', 'n') != 'y':
pytest.skip('sleep command not supported')
# 3s isn't too long, but is enough to cross a few second boundaries.
sleep_time = 3
tstart = time.time()
u_boot_console.run_command('sleep %d' % sleep_time)
tend = time.time()
elapsed = tend - tstart
assert elapsed >= (sleep_time - 0.01)
if not u_boot_console.config.gdbserver:
# 0.25s margin is hopefully enough to account for any system overhead.
assert elapsed < (sleep_time + 0.25)