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| author | Matti Vaittinen <mazziesaccount@gmail.com> | 2023-05-04 09:58:52 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2023-05-13 18:56:06 +0200 |
| commit | a508fbfed333aea05e4ac42d98803a031cda8ce8 (patch) | |
| tree | 7132a0e6e5c4539a70caf8b1abec5852918a7970 /drivers/iio | |
| parent | iio: bu27034: Probe asynchronously (diff) | |
| download | linux-a508fbfed333aea05e4ac42d98803a031cda8ce8.tar.xz linux-a508fbfed333aea05e4ac42d98803a031cda8ce8.zip | |
iio: kx022a: Probe asynchronously
Devices which may take a while to initialize during probe and which have
no strong reason to probe synchronously can request asynchronous probing
as default probe strategy. This can speed-up start times on some
platforms.
The KX022A gets probe delayed for at least two reasons. It enables the
supply regulator, (which is likely to have ramp-up delay if it was
disabled) and additionally it delays while the sensor itself is
initializing.
Changing to asynchronous probing may cause problems. Some of which are
discussed in:
https://lore.kernel.org/all/06db017f-e985-4434-8d1d-02ca2100cca0@sirena.org.uk/
Enable asynchronous probing for KX022A.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/24cea76c282a28b7a4dba297ab627176f8097907.1683185765.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/accel/kionix-kx022a-i2c.c | 1 | ||||
| -rw-r--r-- | drivers/iio/accel/kionix-kx022a-spi.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/accel/kionix-kx022a-i2c.c b/drivers/iio/accel/kionix-kx022a-i2c.c index e6fd02d931b6..ee982206e5dd 100644 --- a/drivers/iio/accel/kionix-kx022a-i2c.c +++ b/drivers/iio/accel/kionix-kx022a-i2c.c @@ -40,6 +40,7 @@ static struct i2c_driver kx022a_i2c_driver = { .driver = { .name = "kx022a-i2c", .of_match_table = kx022a_of_match, + .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, .probe_new = kx022a_i2c_probe, }; diff --git a/drivers/iio/accel/kionix-kx022a-spi.c b/drivers/iio/accel/kionix-kx022a-spi.c index 9cd047f7b346..f45a46899a5f 100644 --- a/drivers/iio/accel/kionix-kx022a-spi.c +++ b/drivers/iio/accel/kionix-kx022a-spi.c @@ -46,6 +46,7 @@ static struct spi_driver kx022a_spi_driver = { .driver = { .name = "kx022a-spi", .of_match_table = kx022a_of_match, + .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, .probe = kx022a_spi_probe, .id_table = kx022a_id, |