[PATCH v4 2/3] dt-bindings: iio: Add cros ec proximity yaml doc

Stephen Boyd
2021-02-02T18:50:50Z

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@gmail.com>
Cc: Benson Leung <bleung@chromium.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Gwendal Grignou <gwendal@chromium.org>
Cc: <devicetree@vger.kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
.../google,cros-ec-mkbp-proximity.yaml | 46 +++++++++++++++++++
.../bindings/mfd/google,cros-ec.yaml | 3 ++
2 files changed, 49 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/proximity/google,cros-ec-mkbp-proximity.yaml

diff --git a/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-mkbp-proximity.yaml b/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-mkbp-proximity.yaml
new file mode 100644
index 000000000000..d82b929af445
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-mkbp-proximity.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/iio/proximity/google,cros-ec-mkbp-proximity.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ChromeOS EC MKBP Proximity Sensor
+
+maintainers:
+ - Stephen Boyd <swboyd@chromium.org>
+ - Benson Leung <bleung@chromium.org>
+ - Enric Balletbo i Serra <enric.balletbo@collabora.com>
+
+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-mkbp-proximity
+
+ label:
+ description: Name for proximity sensor
+
+required:
+ - compatible
+
+unevaluatedProperties: false
+additionalProperties: false
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ ec@0 {
+ compatible = "google,cros-ec-spi";
+ reg = <0>;
+ proximity {
+ compatible = "google,cros-ec-mkbp-proximity";
+ label = "proximity-wifi-lte";
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
index 76bf16ee27ec..479a9f15de32 100644
--- a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
+++ b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
@@ -94,6 +94,9 @@ properties:
keyboard-controller:
$ref: "/schemas/input/google,cros-ec-keyb.yaml#"

+ proximity:
+ $ref: "/schemas/iio/proximity/google,cros-ec-mkbp-proximity.yaml#"
+
codecs:
type: object
additionalProperties: false
--