platform/x86: int3472: Avoid GPIO regulator spikes

Browse source

Avoid the GPIO controlling the avdd regulator being driven low or high
for a very short time leading to spikes by adding an enable delay of 2 ms
and a minimum off to on delay of also 2 ms.

Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: David Heidelberg <david@ixit.cz>  # Dell Latitude 9440
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20250417111337.38142-7-hdegoede@redhat.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

...

This commit is contained in:

Hans de Goede 2025-04-17 13:13:34 +02:00 • committed by Ilpo Järvinen

parent 033234bdc6

commit ccda394e1e

No known key found for this signature in database

GPG key ID: 59AC4F6153E5CE31

3 changed files with 19 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

7

drivers/platform/x86/intel/int3472/clk_and_regulator.c

View file

13

drivers/platform/x86/intel/int3472/common.h

View file

4

drivers/platform/x86/intel/int3472/discrete.c

View file