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

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Message-Id: <20240412-pinctrl-scmi-oem-v1-v1-1-704f242544c1@nxp.com>
Date: Fri, 12 Apr 2024 08:29:25 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Peng Fan <peng.fan@....com>, 
 Sudeep Holla <sudeep.holla@....com>, 
 Cristian Marussi <cristian.marussi@....com>
Cc: linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH 1/3] dt-bindings: pinctrl: support i.MX95 SCMI pinctrl

From: Peng Fan <peng.fan@....com>

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@....com>
---
 .../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@....com>
+
+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