diff options
| author |   Jagan Teki <jagan@amarulasolutions.com> | 2019-04-03 15:20:26 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-04-03 16:10:42 -0700 |
| commit | ae97fb589648cd5558f1ceea317404a639307501 (patch) | |
| tree | bda65aa2969e515cce8a5ca9842ff06f7bfff23a /Documentation | |
| parent | Input: evdev - use struct_size() in kzalloc() and vzalloc() (diff) | |
| download | linux-dev-ae97fb589648cd5558f1ceea317404a639307501.tar.xz linux-dev-ae97fb589648cd5558f1ceea317404a639307501.zip | |
Input: goodix - add regulators suppot
Goodix CTP controllers require AVDD28, VDDIO regulators for power-on
sequence.
The delay between these regualtor operations as per Power-on Timing
from datasheet[1] is 0 (T1 >= 0 usec).
So, enable and disable these regulators in proper order using normal
regulator functions without any delay in between.
[1] GT5663 Datasheet_English_20151106_Rev.01
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/goodix.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/goodix.txt b/Documentation/devicetree/bindings/input/touchscreen/goodix.txt index 8cf0b4d38a7e..255673250bbd 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/goodix.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/goodix.txt @@ -19,6 +19,8 @@ Optional properties: - irq-gpios : GPIO pin used for IRQ. The driver uses the interrupt gpio pin as output to reset the device. - reset-gpios : GPIO pin used for reset + - AVDD28-supply : Analog power supply regulator on AVDD28 pin + - VDDIO-supply : GPIO power supply regulator on VDDIO pin - touchscreen-inverted-x - touchscreen-inverted-y - touchscreen-size-x |