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| author | Uwe Kleine-König <u.kleine-koenig@baylibre.com> | 2024-11-05 16:35:22 +0100 |
|---|---|---|
| committer | Uwe Kleine-König <ukleinek@kernel.org> | 2024-11-07 12:03:39 +0100 |
| commit | b2eaa1170e45dc18eb09dcc9abafbe9a7502e960 (patch) | |
| tree | e228ed35fefeb29c9aa90f71e4bb20db2d1e2da1 /include/trace | |
| parent | 2ea25aab938a250bdf3148acd15359b56b91b40e (diff) | |
| download | lwn-b2eaa1170e45dc18eb09dcc9abafbe9a7502e960.tar.gz lwn-b2eaa1170e45dc18eb09dcc9abafbe9a7502e960.zip | |
pwm: Assume a disabled PWM to emit a constant inactive output
Some PWM hardwares (e.g. MC33XS2410) cannot implement a zero duty cycle
but can instead disable the hardware which also results in a constant
inactive output.
There are some checks (enabled with CONFIG_PWM_DEBUG) to help
implementing a driver without violating the normal rounding rules. Make
them less strict to let above described hardware pass without warning.
Reported-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Link: https://lore.kernel.org/r/20241103205215.GA509903@debian
Fixes: 3ad1f3a33286 ("pwm: Implement some checks for lowlevel drivers")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Tested-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Link: https://lore.kernel.org/r/20241105153521.1001864-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Diffstat (limited to 'include/trace')
0 files changed, 0 insertions, 0 deletions