[PATCH 1/3] dt-bindings: pinctrl: support i.MX95 SCMI pinctrl

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@xxxxxxx>

i.MX95 Pinctrl is managed by SCMI firmware using OEM extensions. This
patch is to add i.MX95 Pinctrl OEM extensions properties.

Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
 .../bindings/pinctrl/nxp,imx95-pinctrl.yaml        | 44 ++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/nxp,imx95-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/nxp,imx95-pinctrl.yaml
new file mode 100644
index 000000000000..4bf7a6192813
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/nxp,imx95-pinctrl.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2024 NXP
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/nxp,imx95-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: i.MX System Control and Management Interface (SCMI) Pinctrl Protocol
+
+maintainers:
+  - Peng Fan <peng.fan@xxxxxxx>
+
+patternProperties:
+  '-pins$': false
+  'grp$':
+    type: object
+
+    properties:
+      $nodename:
+        pattern: "^[0-9a-f]+$"
+
+      pins:
+        $ref: /schemas/types.yaml#/definitions/string
+        description: name of the pin
+
+      nxp,func-id:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: high impedance mode ("third-state", "floating")
+
+      nxp,pin-conf:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: latch weakly
+
+      nxp,daisy-id:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: pull up the pin. Takes as optional argument on hardware
+          supporting it the pull strength in Ohm.
+
+      nxp,daisy-conf:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: pull down the pin. Takes as optional argument on hardware
+          supporting it the pull strength in Ohm.
+
+additionalProperties: true

-- 
2.37.1