This is for ChromeOS tablets which have a 'cros_cbas' switch device
in the "Whiskers" base board. This device can be instantiated only by
device tree on ARM platforms. ChromeOS EC doesn't provide a way to
probe the device.
Signed-off-by: Ikjoon Jang <ikjn@xxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Acked-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
---
Changes in v6:
- Remove a label from cbas node in an example
Changes in v5:
- Add missing blank lines and change the description property's position.
- Add a note to description: "this device cannot be detected at runtime."
Changes in v4:
Define cros-cbase bindings inside google,cros-ec.yaml instead of
a separated binding document.
.../bindings/mfd/google,cros-ec.yaml | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
index 76bf16ee27ec..929c17552d8b 100644
--- a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
+++ b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
@@ -114,6 +114,22 @@ properties:
- "#address-cells"
- "#size-cells"
+ cbas:
+ type: object
+
+ description:
+ This device is used to signal when a detachable base is attached
+ to a Chrome OS tablet. This device cannot be detected at runtime.
+
+ properties:
+ compatible:
+ const: google,cros-cbas
+
+ required:
+ - compatible
+
+ additionalProperties: false
+
patternProperties:
"^i2c-tunnel[0-9]*$":
type: object
@@ -180,6 +196,10 @@ examples:
interrupts = <99 0>;
interrupt-parent = <&gpio7>;
spi-max-frequency = <5000000>;
+
+ cbas {
+ compatible = "google,cros-cbas";
+ };
};
};
--
2.31.1.607.g51e8a6a459-goog
