[PATCH v3 4/6] dt-bindings: touchscreen: fsl,imx6ul-tsc: support glitch thresold

Dario Binacchi
2025-09-15T19:53:58Z

Support the touchscreen-glitch-threshold-ns property. Unlike the
generic description in touchscreen.yaml, this controller maps the
provided value to one of four discrete thresholds internally.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

---

Changes in v3:
- Remove the final part of the description that refers to
implementation details.

.../bindings/input/touchscreen/fsl,imx6ul-tsc.yaml | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml
index 678756ad0f92..6214d8be5a99 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml
@@ -62,6 +62,18 @@ properties:
description: Number of data samples which are averaged for each read.
enum: [ 1, 4, 8, 16, 32 ]

+ touchscreen-glitch-threshold-ns:
+ description: |
+ Unlike the generic property defined in touchscreen.yaml, this
+ controller does not allow arbitrary values. Internally the value is
+ converted to IPG clock cycles and mapped to one of four discrete
+ thresholds exposed by the TSC_DEBUG_MODE2 register:
+
+ 0: 8191 IPG cycles
+ 1: 4095 IPG cycles
+ 2: 2047 IPG cycles
+ 3: 1023 IPG cycles
+
required:
- compatible
- reg
--
2.43.0