This new property allows devices to specify some register values which
are missing on units with third party replacement displays. These
displays use unofficial touch ICs which only implement a subset of the
RMI4 specification.
Signed-off-by: Caleb Connolly <caleb.connolly@xxxxxxxxxx>
---
To: "Jason A. Donenfeld" <Jason@xxxxxxxxx>
To: Matthias Schiffer <matthias.schiffer@xxxxxxxxxxxxxxx>
To: Rob Herring <robh+dt@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
---
Documentation/devicetree/bindings/input/syna,rmi4.yaml | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/input/syna,rmi4.yaml b/Documentation/devicetree/bindings/input/syna,rmi4.yaml
index 4d4e1a8e36be..bd6beb67ac21 100644
--- a/Documentation/devicetree/bindings/input/syna,rmi4.yaml
+++ b/Documentation/devicetree/bindings/input/syna,rmi4.yaml
@@ -49,6 +49,16 @@ properties:
description:
Delay to wait after powering on the device.
+ syna,pdt-fallback-desc:
+ $ref: /schemas/types.yaml#/definitions/uint8-array
+ description:
+ An array of pairs of function number and version. These are used
+ on some devices with replacement displays that use unofficial touch
+ controllers. These controllers do report the properties of their PDT
+ entries, but leave the function_number and function_version registers
+ blank. These values should match exactly the 5th and 4th bytes of each
+ PDT entry from the original display's touch controller.
+
vdd-supply: true
vio-supply: true
--
2.42.0
