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 <[email protected]> --- To: "Jason A. Donenfeld" <[email protected]> To: Matthias Schiffer <[email protected]> To: Rob Herring <[email protected]> To: Krzysztof Kozlowski <[email protected]> To: Conor Dooley <[email protected]> Cc: [email protected] --- Documentation/devicetree/bindings/input/syna,rmi4.yaml | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/devicetree/bindings/input/syna,rmi4.yaml b/Documentation/devicetree/bindings/input/syna,rmi4.yaml index 4d4e1a8e36be..1f4a2179e4d3 100644 --- a/Documentation/devicetree/bindings/input/syna,rmi4.yaml +++ b/Documentation/devicetree/bindings/input/syna,rmi4.yaml @@ -49,6 +49,21 @@ properties: description: Delay to wait after powering on the device. + syna,pdt-fallback-desc: + $ref: /schemas/types.yaml#/definitions/uint8-matrix + 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 Page + Descriptor Table (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. + items: + items: + - description: The 5th byte of the PDT entry + - description: The 4th byte of the PDT entry + vdd-supply: true vio-supply: true -- 2.42.0
