[PATCH v2 1/2] dt-bindings: input: syna,rmi4: Document syna,rmi4-s3706b

[David Heidelberg via B4 Relay]

From: David Heidelberg <david@xxxxxxx>

Mostly irrelevant for authentic Synaptics touchscreens, but very important
for applying workarounds to cheap TS knockoffs.

These knockoffs work well with the downstream driver, and since the user
has no way to distinguish them, later in this patch set, we introduce
workarounds to ensure they function as well as possible.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: David Heidelberg <david@xxxxxxx>
---
 Documentation/devicetree/bindings/input/syna,rmi4.yaml | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/input/syna,rmi4.yaml b/Documentation/devicetree/bindings/input/syna,rmi4.yaml
index 8685ef4481f4a..fb4804ac3544d 100644
--- a/Documentation/devicetree/bindings/input/syna,rmi4.yaml
+++ b/Documentation/devicetree/bindings/input/syna,rmi4.yaml
@@ -13,19 +13,24 @@ maintainers:
 
 description: |
   The Synaptics RMI4 (Register Mapped Interface 4) core is able to support RMI4
   devices using different transports (I2C, SPI) and different functions (e.g.
   Function 1, 2D sensors using Function 11 or 12).
 
 properties:
   compatible:
-    enum:
-      - syna,rmi4-i2c
-      - syna,rmi4-spi
+    oneOf:
+      - enum:
+          - syna,rmi4-i2c
+          - syna,rmi4-spi
+      - items:
+          - enum:
+              - syna,rmi4-s3706b  # OnePlus 6/6T
+          - const: syna,rmi4-i2c
 
   reg:
     maxItems: 1
 
   '#address-cells':
     const: 1
 
   '#size-cells':

-- 
2.53.0