diff mbox series

[1/2] dt-bindings: input: touchscreen: edt-ft5x06: add iovcc-supply

Message ID 20210108192337.563679-1-stephan@gerhold.net (mailing list archive)
State New
Headers show
Series [1/2] dt-bindings: input: touchscreen: edt-ft5x06: add iovcc-supply | expand

Commit Message

Stephan Gerhold Jan. 8, 2021, 7:23 p.m. UTC
At the moment, the edt-ft5x06 driver can control a single regulator
("vcc"). However, some FocalTech touch controllers have an additional
IOVCC pin that should be supplied with the digital I/O voltage.

The I/O voltage might be provided by another regulator that should also
be kept on. Otherwise, the touchscreen can randomly stop functioning if
the regulator is turned off because no other components still require it.

Document (optional) support for controlling the regulator for IOVCC
using "iovcc-supply".

Cc: Ondrej Jirman <megous@megous.com>
Cc: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
 .../devicetree/bindings/input/touchscreen/edt-ft5x06.yaml        | 1 +
 1 file changed, 1 insertion(+)

Comments

Rob Herring Jan. 13, 2021, 3:25 p.m. UTC | #1
On Fri, 08 Jan 2021 20:23:36 +0100, Stephan Gerhold wrote:
> At the moment, the edt-ft5x06 driver can control a single regulator
> ("vcc"). However, some FocalTech touch controllers have an additional
> IOVCC pin that should be supplied with the digital I/O voltage.
> 
> The I/O voltage might be provided by another regulator that should also
> be kept on. Otherwise, the touchscreen can randomly stop functioning if
> the regulator is turned off because no other components still require it.
> 
> Document (optional) support for controlling the regulator for IOVCC
> using "iovcc-supply".
> 
> Cc: Ondrej Jirman <megous@megous.com>
> Cc: Marco Felsch <m.felsch@pengutronix.de>
> Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
> ---
>  .../devicetree/bindings/input/touchscreen/edt-ft5x06.yaml        | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml
index bfc3a8b5e118..2e8da7470513 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml
@@ -56,6 +56,7 @@  properties:
   wakeup-source: true
 
   vcc-supply: true
+  iovcc-supply: true
 
   gain:
     description: Allows setting the sensitivity in the range from 0 to 31.