Linux-IIO Archive on lore.kernel.org
 help / color / Atom feed
* [PATCH v3 2/4] dt-bindings: add parallax ping sensors
@ 2019-11-18  7:36 Andreas Klinger
  2019-11-23 14:34 ` Jonathan Cameron
  0 siblings, 1 reply; 2+ messages in thread
From: Andreas Klinger @ 2019-11-18  7:36 UTC (permalink / raw)
  To: robh+dt, jic23, mark.rutland
  Cc: mripard, shawnguo, heiko, icenowy, laurent.pinchart, knaack.h,
	lars, pmeerw, gregkh, christophe.jaillet, tglx, mchehab+samsung,
	davem, paulmck, devicetree, linux-iio, linux-kernel

Add dt-bindings for parallax PING))) and LaserPING iio sensors, which
are used for measuring distances.

Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../bindings/iio/proximity/parallax-ping.yaml      | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml

diff --git a/Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml b/Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml
new file mode 100644
index 000000000000..a079c9921af6
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/proximity/parallax-ping.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Parallax PING))) and LaserPING range finder
+
+maintainers:
+  - Andreas Klinger <ak@it-klinger.de>
+
+description: |
+  Bit-banging driver using one GPIO:
+  - ping-gpios is raised by the driver to start measurement
+  - direction of ping-gpio is then switched into input with an interrupt
+    for receiving distance value as PWM signal
+
+  Specifications about the devices can be found at:
+  http://parallax.com/sites/default/files/downloads/28041-LaserPING-2m-Rangefinder-Guide.pdf
+  http://parallax.com/sites/default/files/downloads/28015-PING-Documentation-v1.6.pdf
+
+properties:
+  compatible:
+    enum:
+      - parallax,ping
+      - parallax,laserping
+
+  ping-gpios:
+    description:
+      Definition of the GPIO for the triggering and echo (output and input)
+      This GPIO is set for about 5 us by the driver to tell the device it
+      should initiate the measurement cycle. Afterwards the GPIO is switched
+      to input direction with an interrupt. The device sets it and the
+      length of the input signal corresponds to the measured distance.
+      It needs to be an GPIO which is able to deliver an interrupt because
+      the time between two interrupts is measured in the driver.
+      See Documentation/devicetree/bindings/gpio/gpio.txt for information
+      on how to specify a consumer gpio.
+    maxItems: 1
+
+required:
+  - compatible
+  - ping-gpios
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    proximity {
+        compatible = "parallax,laserping";
+        ping-gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>;
+    };
-- 
2.11.0

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH v3 2/4] dt-bindings: add parallax ping sensors
  2019-11-18  7:36 [PATCH v3 2/4] dt-bindings: add parallax ping sensors Andreas Klinger
@ 2019-11-23 14:34 ` Jonathan Cameron
  0 siblings, 0 replies; 2+ messages in thread
From: Jonathan Cameron @ 2019-11-23 14:34 UTC (permalink / raw)
  To: Andreas Klinger
  Cc: robh+dt, mark.rutland, mripard, shawnguo, heiko, icenowy,
	laurent.pinchart, knaack.h, lars, pmeerw, gregkh,
	christophe.jaillet, tglx, mchehab+samsung, davem, paulmck,
	devicetree, linux-iio, linux-kernel

On Mon, 18 Nov 2019 08:36:12 +0100
Andreas Klinger <ak@it-klinger.de> wrote:

> Add dt-bindings for parallax PING))) and LaserPING iio sensors, which
> are used for measuring distances.
> 
> Signed-off-by: Andreas Klinger <ak@it-klinger.de>
> Reviewed-by: Rob Herring <robh@kernel.org>
Applied to the togreg branch of iio.git and pushed out as testing.

Thanks,

Jonathan

> ---
>  .../bindings/iio/proximity/parallax-ping.yaml      | 51 ++++++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml b/Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml
> new file mode 100644
> index 000000000000..a079c9921af6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/proximity/parallax-ping.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Parallax PING))) and LaserPING range finder
> +
> +maintainers:
> +  - Andreas Klinger <ak@it-klinger.de>
> +
> +description: |
> +  Bit-banging driver using one GPIO:
> +  - ping-gpios is raised by the driver to start measurement
> +  - direction of ping-gpio is then switched into input with an interrupt
> +    for receiving distance value as PWM signal
> +
> +  Specifications about the devices can be found at:
> +  http://parallax.com/sites/default/files/downloads/28041-LaserPING-2m-Rangefinder-Guide.pdf
> +  http://parallax.com/sites/default/files/downloads/28015-PING-Documentation-v1.6.pdf
> +
> +properties:
> +  compatible:
> +    enum:
> +      - parallax,ping
> +      - parallax,laserping
> +
> +  ping-gpios:
> +    description:
> +      Definition of the GPIO for the triggering and echo (output and input)
> +      This GPIO is set for about 5 us by the driver to tell the device it
> +      should initiate the measurement cycle. Afterwards the GPIO is switched
> +      to input direction with an interrupt. The device sets it and the
> +      length of the input signal corresponds to the measured distance.
> +      It needs to be an GPIO which is able to deliver an interrupt because
> +      the time between two interrupts is measured in the driver.
> +      See Documentation/devicetree/bindings/gpio/gpio.txt for information
> +      on how to specify a consumer gpio.
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - ping-gpios
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    proximity {
> +        compatible = "parallax,laserping";
> +        ping-gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>;
> +    };


^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, back to index

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-11-18  7:36 [PATCH v3 2/4] dt-bindings: add parallax ping sensors Andreas Klinger
2019-11-23 14:34 ` Jonathan Cameron

Linux-IIO Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-iio/0 linux-iio/git/0.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-iio linux-iio/ https://lore.kernel.org/linux-iio \
		linux-iio@vger.kernel.org
	public-inbox-index linux-iio

Example config snippet for mirrors

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


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