linux-kernel - [PATCH 03/13] dt-bindings: extcon: document Samsung S2M series PMIC extcon device

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Message-Id: <20251114-s2mu005-pmic-v1-3-9e3184d3a0c9@disroot.org>
Date: Fri, 14 Nov 2025 00:35:04 +0530
From: Kaustabh Chakraborty <kauschluss@...root.org>
To: Lee Jones <lee@...nel.org>, Pavel Machek <pavel@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, MyungJoo Ham <myungjoo.ham@...sung.com>, 
 Chanwoo Choi <cw00.choi@...sung.com>, Sebastian Reichel <sre@...nel.org>, 
 Krzysztof Kozlowski <krzk@...nel.org>, 
 André Draszik <andre.draszik@...aro.org>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Jonathan Corbet <corbet@....net>
Cc: linux-leds@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, 
 linux-samsung-soc@...r.kernel.org, linux-rtc@...r.kernel.org, 
 linux-doc@...r.kernel.org, Kaustabh Chakraborty <kauschluss@...root.org>
Subject: [PATCH 03/13] dt-bindings: extcon: document Samsung S2M series
 PMIC extcon device

Certain Samsung S2M series PMICs have a MUIC device which reports
various cable states by measuring the ID-GND resistance with an internal
ADC. Document the devicetree schema for this device.

The initial driver introduced has support for S2MU005, add its
compatible as well.

Signed-off-by: Kaustabh Chakraborty <kauschluss@...root.org>
---
 .../bindings/extcon/samsung,s2mu005-muic.yaml      | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/Documentation/devicetree/bindings/extcon/samsung,s2mu005-muic.yaml b/Documentation/devicetree/bindings/extcon/samsung,s2mu005-muic.yaml
new file mode 100644
index 000000000000..8511bb96b47a
--- /dev/null
+++ b/Documentation/devicetree/bindings/extcon/samsung,s2mu005-muic.yaml
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/extcon/samsung,s2mu005-muic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Extcon Driver for Samsung S2M series PMICs
+
+maintainers:
+  - Kaustabh Chakraborty <kauschluss@...root.org>
+
+description: |
+  The Samsung S2M series PMIC extcon device is a USB port accessory
+  detector. It reports multiple states depending on the ID-GND
+  resistance measured by an internal ADC.
+
+  This is a part of device tree bindings for S2M and S5M family of Power
+  Management IC (PMIC).
+
+  See also Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml for
+  additional information and example.
+
+properties:
+  compatible:
+    enum:
+      - samsung,s2mu005-muic
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+
+required:
+  - compatible
+  - port
+
+additionalProperties: false

-- 
2.51.2