[PATCH 2/3] dt-bindings: iio: Add cros ec proximity yaml doc

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Some cros ECs support a front proximity MKBP event via
'EC_MKBP_FRONT_PROXIMITY'. Add a DT binding to document this feature via
a node that is a child of the main cros_ec device node. Devices that
have this ability will describe this in firmware.

Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: Benson Leung <bleung@xxxxxxxxxxxx>
Cc: Guenter Roeck <groeck@xxxxxxxxxxxx>
Cc: Douglas Anderson <dianders@xxxxxxxxxxxx>
Cc: Gwendal Grignou <gwendal@xxxxxxxxxxxx>
Cc: <devicetree@xxxxxxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
---
 .../proximity/google,cros-ec-proximity.yaml   | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/proximity/google,cros-ec-proximity.yaml

diff --git a/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-proximity.yaml b/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-proximity.yaml
new file mode 100644
index 000000000000..c0a34bdfe4fd
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-proximity.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/iio/proximity/google,cros-ec-proximity.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ChromeOS EC MKBP Proximity Sensor
+
+maintainers:
+  - Stephen Boyd <swboyd@xxxxxxxxxxxx>
+  - Benson Leung <bleung@xxxxxxxxxxxx>
+  - Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
+
+description: |
+  Google's ChromeOS EC sometimes has the ability to detect user proximity.
+  This is implemented on the EC as near/far logic and exposed to the OS
+  via an MKBP switch bit.
+
+properties:
+  compatible:
+    const: google,cros-ec-proximity
+
+  label:
+    description: Name for proximity sensor
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    proximity {
+        compatible = "google,cros-ec-proximity";
+        label = "proximity-wifi-lte";
+    };
-- 
https://chromeos.dev




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