[PATCH v3 1/3] dt-bindings: embedded-controller: Add ASUS Zenbook A16 EC

[Konrad Dybcio <konradybcio@kernel.org>]

From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Some Qualcomm Snapdragon X2 Elite (Extreme)-based ASUS laptops (at
least the Zenbook A14 and A16) expose a custom, somewhat
Qualcomm reference-derived EC interface. It allows for fan speed
reporting, keyboard backlight setting and receiving of a number of
miscellaneous sideband events.

Introduce a binding for that class of devices.

Two separate compatibles are maintained since the two laptops' ECs seem
to be generally alike, however assuming full compatibility with the
limited available information does not spark confidence.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
---
 .../asus,zenbook-a16-ux3607oa-ec.yaml              | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/Documentation/devicetree/bindings/embedded-controller/asus,zenbook-a16-ux3607oa-ec.yaml b/Documentation/devicetree/bindings/embedded-controller/asus,zenbook-a16-ux3607oa-ec.yaml
new file mode 100644
index 000000000000..c0bfad5d21c0
--- /dev/null
+++ b/Documentation/devicetree/bindings/embedded-controller/asus,zenbook-a16-ux3607oa-ec.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/embedded-controller/asus,zenbook-a16-ux3607oa-ec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASUS Zenbook A16 (UX3607OA)-class Embedded Controller
+
+maintainers:
+  - Konrad Dybcio <konradybcio@kernel.org>
+
+description:
+  The Qualcomm Snapdragon X2 series-based ASUS Zenbook A16 (and similar
+  machines) come with a custom EC firmware, loosely based on the
+  Qualcomm reference ("Hamoa CRD EC") implementation, with a lot of
+  customization.
+
+properties:
+  compatible:
+    enum:
+      - asus,zenbook-a14-ux3407na-ec
+      - asus,zenbook-a16-ux3607oa-ec
+
+  reg:
+    const: 0x76
+
+  interrupts:
+    maxItems: 1
+
+  "#thermal-sensor-cells":
+    const: 1
+
+  wakeup-source: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - '#thermal-sensor-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        embedded-controller@76 {
+            compatible = "asus,zenbook-a16-ux3607oa-ec";
+            reg = <0x76>;
+
+            interrupts-extended = <&tlmm 66 IRQ_TYPE_EDGE_FALLING>;
+
+            pinctrl-0 = <&ec_int_n_default>;
+            pinctrl-names = "default";
+
+            #thermal-sensor-cells = <1>;
+
+            wakeup-source;
+        };
+    };
+...

-- 
2.55.0