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[v4,1/3] dt-bindings: HID: i2c-hid: Document reset-related properties

Message ID 20240131-x13s-touchscreen-v4-1-39c0f9925d3c@quicinc.com
State New
Headers show
Series arm64: dts: qcom: sc8280xp-x13s: Enable touchscreen | expand

Commit Message

Bjorn Andersson Feb. 1, 2024, 3:07 a.m. UTC 
Some I2C HID devices has a reset pin and requires that some specified
time elapses after this reset pin is deasserted, before communication
with the device is attempted.

The Linux implementation is looking for these in the "reset-gpios" and
"post-reset-deassert-delay-ms" properties already, so use these property
names.

Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
---
 Documentation/devicetree/bindings/input/hid-over-i2c.yaml | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
index 138caad96a29..f07ff4cb3d26 100644
--- a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
+++ b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml
@@ -50,6 +50,12 @@  properties:
     description: Time required by the device after enabling its regulators
       or powering it on, before it is ready for communication.
 
+  post-reset-deassert-delay-ms:
+    description: Time required by the device after reset has been deasserted,
+      before it is ready for communication.
+
+  reset-gpios: true
+
   touchscreen-inverted-x: true
 
   touchscreen-inverted-y: true