Linux-Devicetree Archive on lore.kernel.org
 help / color / Atom feed
From: Stephan Gerhold <stephan@gerhold.net>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
	devicetree@vger.kernel.org,
	Simon Budig <simon.budig@kernelconcepts.de>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Stephan Gerhold <stephan@gerhold.net>,
	Ondrej Jirman <megous@megous.com>,
	Marco Felsch <m.felsch@pengutronix.de>
Subject: [PATCH 1/2] dt-bindings: input: touchscreen: edt-ft5x06: add iovcc-supply
Date: Fri,  8 Jan 2021 20:23:36 +0100
Message-ID: <20210108192337.563679-1-stephan@gerhold.net> (raw)

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(+)

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.
-- 
2.30.0


             reply index

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-08 19:23 Stephan Gerhold [this message]
2021-01-08 19:23 ` [PATCH 2/2] Input: edt-ft5x06 - add support for iovcc-supply Stephan Gerhold
2021-01-11  8:36   ` Marco Felsch
2021-01-11  9:26     ` Stephan Gerhold
2021-01-11  9:45       ` Marco Felsch
2021-01-11 10:10         ` Stephan Gerhold
2021-01-11 15:46           ` Stephan Gerhold
2021-01-11 10:22       ` Andy Shevchenko
2021-01-11 10:43         ` Stephan Gerhold
2021-01-13 15:25 ` [PATCH 1/2] dt-bindings: input: touchscreen: edt-ft5x06: add iovcc-supply Rob Herring

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210108192337.563679-1-stephan@gerhold.net \
    --to=stephan@gerhold.net \
    --cc=andriy.shevchenko@linux.intel.com \
    --cc=devicetree@vger.kernel.org \
    --cc=dmitry.torokhov@gmail.com \
    --cc=linux-input@vger.kernel.org \
    --cc=m.felsch@pengutronix.de \
    --cc=megous@megous.com \
    --cc=robh+dt@kernel.org \
    --cc=simon.budig@kernelconcepts.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-Devicetree Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-devicetree/0 linux-devicetree/git/0.git
	git clone --mirror https://lore.kernel.org/linux-devicetree/1 linux-devicetree/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-devicetree linux-devicetree/ https://lore.kernel.org/linux-devicetree \
		devicetree@vger.kernel.org
	public-inbox-index linux-devicetree

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-devicetree


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git