[RFC PATCH 2/3] dt-bindings: iio: proximity: Add Cytron HC-SR04

[Paweł Wiśniewski]

The Cytron HC-SR04 starts a ranging cycle with an active-high trigger
pulse of at least 10 us and reports the acoustic round-trip time as
the width of an active-high echo pulse.

Add the cytron,hc-sr04 compatible and a reference to the product
manual. Update the trigger GPIO description to account for the pulse
durations used by the supported devices.

The interface matches the two-GPIO protocol implemented by the
existing SRF04 driver.

Assisted-by: ChatGPT:GPT-5.6 Thinking
Signed-off-by: Paweł Wiśniewski <pawel.wis.me@xxxxxxxxx>
---
 .../devicetree/bindings/iio/proximity/devantech-srf04.yaml   | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml b/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml
index ce795279839e..f4237ae612ab 100644
--- a/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml
+++ b/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml
@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/iio/proximity/devantech-srf04.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Devantech SRF04 and Maxbotix mb1000 ultrasonic range finder
+title: Devantech SRF04 and Maxbotix mb1000 and Cytron HC-SR04 ultrasonic range finder
 
 maintainers:
   - Andreas Klinger <ak@xxxxxxxxxxxxx>
@@ -21,9 +21,12 @@ description: |
 
   https://www.maxbotix.com/documents/LV-MaxSonar-EZ_Datasheet.pdf
 
+  https://botland.com.pl/index.php?controller=attachment&id_attachment=476
+
 properties:
   compatible:
     enum:
+      - cytron,hc-sr04
       - devantech,srf04
       - maxbotix,mb1000
       - maxbotix,mb1010
-- 
2.47.3