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-rw-r--r--Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml b/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
index 4080422a9e..037e5d3c44 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
@@ -34,6 +34,9 @@ properties:
vdd-supply:
description: Regulator for voltage.
+ vddio-supply:
+ description: Optional Regulator for I/O voltage.
+
reset-gpios:
maxItems: 1