[PATCH v4] dt-bindings: iio: proximity: move LIDAR-Lite out of trivial-devices

The PulsedLight LIDAR-Lite v2 is currently described as a trivial device,
but it is not one: besides the I2C interface it exposes a power-enable pin
and a mode-control pin (the latter also used for the PWM distance output).

Move it to a dedicated binding file. While at it, document the LIDAR-Lite
v3: it is sold by Garmin, which acquired PulsedLight, and is
pin-compatible with the v2, so add it with "pulsedlight,lidar-lite-v2"
as a fallback compatible.

Signed-off-by: Rodrigo Gobbi <[email protected]>
---
Hi, all,
This was on my plate and I didn't have a chance to send this before.

The vendor change is not a typo: see the discussion at [1].
Tks and regards.

[1] https://lore.kernel.org/all/[email protected]/

Changelog:
v4: unify patches rather than using a series to keep the tree bisectable;
    rewrite the commit msg, naming the devices explicitly;
v3: https://lore.kernel.org/all/[email protected]/
v2: https://lore.kernel.org/all/[email protected]/
v1: https://lore.kernel.org/all/[email protected]/
---
 .../proximity/pulsedlight,lidar-lite-v2.yaml  | 54 +++++++++++++++++++
 .../devicetree/bindings/trivial-devices.yaml  |  2 -
 2 files changed, 54 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/iio/proximity/pulsedlight,lidar-lite-v2.yaml

diff --git a/Documentation/devicetree/bindings/iio/proximity/pulsedlight,lidar-lite-v2.yaml b/Documentation/devicetree/bindings/iio/proximity/pulsedlight,lidar-lite-v2.yaml
new file mode 100644
index 000000000000..60e60b7769ba
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/pulsedlight,lidar-lite-v2.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/proximity/pulsedlight,lidar-lite-v2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Pulsedlight LIDAR-Lite v2 range-finding sensor
+
+maintainers:
+  - Matt Ranostay <[email protected]>
+
+description: |
+  Support for LIDAR-Lite v2 and v3 laser rangefinders. These devices
+  can use a simple I2C communication bus or can operate in a PWM mode using a
+  mode control pin to trigger acquisitions and return the measured distance.
+  They also have a power enable pin, which can be used to shut off the device.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - grmn,lidar-lite-v3
+          - const: pulsedlight,lidar-lite-v2
+      - const: pulsedlight,lidar-lite-v2
+
+  reg:
+    maxItems: 1
+
+  powerdown-gpios:
+    description: GPIO that can be driven low to shut off power to the device.
+    maxItems: 1
+
+  vdd-supply: true
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        lidar@62 {
+            compatible = "grmn,lidar-lite-v3", "pulsedlight,lidar-lite-v2";
+            reg = <0x62>;
+            vdd-supply = <&vdd_5v0>;
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index 435c4baab436..74b640c48598 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -396,8 +396,6 @@ properties:
           - onnn,adt7462
             # 48-Lane, 12-Port PCI Express Gen 2 (5.0 GT/s) Switch
           - plx,pex8648
-            # Pulsedlight LIDAR range-finding sensor
-          - pulsedlight,lidar-lite-v2
             # Renesas HS3001 Temperature and Relative Humidity Sensors
           - renesas,hs3001
             # Renesas ISL29501 time-of-flight sensor
-- 
2.48.1