linux-kernel - [PATCH 12/14] dt-bindings: pinctrl: add binding for Ralink MT7621 pinctrl

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Message-Id: <20220413060729.27639-13-arinc.unal@arinc9.com>
Date:   Wed, 13 Apr 2022 09:07:27 +0300
From:   Arınç ÜNAL <arinc.unal@...nc9.com>
To:     Sergio Paracuellos <sergio.paracuellos@...il.com>,
        Luiz Angelo Daros de Luca <luizluca@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     erkin.bozoglu@...ont.com,
        Arınç ÜNAL <arinc.unal@...nc9.com>,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org
Subject: [PATCH 12/14] dt-bindings: pinctrl: add binding for Ralink MT7621 pinctrl

Add binding for the Ralink MT7621 pin controller for MT7621 SoC.

Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
---
 .../pinctrl/ralink,mt7621-pinctrl.yaml        | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml

diff --git a/Documentation/devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml
new file mode 100644
index 000000000000..d1e4d1457754
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/ralink,mt7621-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ralink MT7621 Pin Controller
+
+maintainers:
+  - Arınç ÜNAL <arinc.unal@...nc9.com>
+  - Sergio Paracuellos <sergio.paracuellos@...il.com>
+
+description:
+  Ralink MT7621 pin controller for MT7621 SoC.
+  The pin controller can only set the muxing of pin groups. Muxing indiviual pins
+  is not supported. There is no pinconf support.
+
+properties:
+  compatible:
+    const: ralink,mt7621-pinctrl
+
+patternProperties:
+  '-pins$':
+    type: object
+    patternProperties:
+      '^(.*-)?pinmux$':
+        type: object
+        description: node for pinctrl.
+        $ref: pinmux-node.yaml#
+
+        properties:
+          groups:
+            description: The pin group to select.
+            enum: [i2c, jtag, mdio, pcie, rgmii1, rgmii2, sdhci, spi, uart1, uart2, uart3, wdt]
+
+          function:
+            description: The mux function to select.
+            enum: [gpio, i2c, i2s, jtag, mdio, nand1, nand2, pcie refclk, pcie rst, pcm, rgmii1, rgmii2,
+                   sdhci, spdif2, spdif3, spi, uart1, uart2, uart3, wdt refclk, wdt rst]
+
+        required:
+          - groups
+          - function
+
+        additionalProperties: false
+
+    additionalProperties: false
+
+allOf:
+  - $ref: "pinctrl.yaml#"
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  # Pinmux controller node
+  - |
+    pinctrl {
+      compatible = "ralink,mt7621-pinctrl";
+
+      i2c_pins: i2c0-pins {
+        pinmux {
+          groups = "i2c";
+          function = "i2c";
+        };
+      };
+    };
-- 
2.25.1