dt-bindings: pinctrl: airoha: add support of an7563 pin controller

Introduce device tree binding schema for Airoha AN7563 SoC pin controller.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Signed-off-by: Linus Walleij <linusw@kernel.org>

Documentation/devicetree/bindings/pinctrl/airoha,an7563-pinctrl.yaml

@@ -0,0 +1,350 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/airoha,an7563-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha AN7563 Pin Controller
+
+maintainers:
+  - Lorenzo Bianconi <lorenzo@kernel.org>
+
+description:
+  The Airoha's AN7563 Pin controller is used to control SoC pins.
+
+properties:
+  compatible:
+    const: airoha,an7563-pinctrl
+
+  interrupts:
+    maxItems: 1
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    const: 2
+
+  gpio-ranges:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 2
+
+allOf:
+  - $ref: pinctrl.yaml#
+
+required:
+  - compatible
+  - interrupts
+  - gpio-controller
+  - "#gpio-cells"
+  - interrupt-controller
+  - "#interrupt-cells"
+
+patternProperties:
+  '-pins$':
+    type: object
+
+    patternProperties:
+      '^mux(-|$)':
+        type: object
+
+        description:
+          pinmux configuration nodes.
+
+        $ref: /schemas/pinctrl/pinmux-node.yaml
+
+        properties:
+          function:
+            description:
+              A string containing the name of the function to mux to the group.
+            enum: [pon, sipo, mdio, uart, jtag, pcm, spi, pnand, gpio,
+                   pcie_reset, pwm, phy1_led0, phy2_led0, phy3_led0,
+                   phy4_led0, phy1_led1, phy2_led1, phy3_led1, phy4_led1]
+
+          groups:
+            description:
+              An array of strings. Each string contains the name of a group.
+
+        required:
+          - function
+          - groups
+
+        allOf:
+          - if:
+              properties:
+                function:
+                  const: pon
+            then:
+              properties:
+                groups:
+                  enum: [pon]
+          - if:
+              properties:
+                function:
+                  const: sipo
+            then:
+              properties:
+                groups:
+                  enum: [sipo, sipo_rclk]
+          - if:
+              properties:
+                function:
+                  const: mdio
+            then:
+              properties:
+                groups:
+                  enum: [mdio]
+          - if:
+              properties:
+                function:
+                  const: uart
+            then:
+              properties:
+                groups:
+                  items:
+                    enum: [hsuart, hsuart_cts_rts]
+                  maxItems: 2
+          - if:
+              properties:
+                function:
+                  const: jtag
+            then:
+              properties:
+                groups:
+                  enum: [jtag_udi, jtag_dfd]
+          - if:
+              properties:
+                function:
+                  const: pcm
+            then:
+              properties:
+                groups:
+                  enum: [pcm1, pcm2]
+          - if:
+              properties:
+                function:
+                  const: spi
+            then:
+              properties:
+                groups:
+                  items:
+                    enum: [spi_quad, spi_cs1]
+                  maxItems: 2
+          - if:
+              properties:
+                function:
+                  const: pnand
+            then:
+              properties:
+                groups:
+                  enum: [pnand]
+          - if:
+              properties:
+                function:
+                  const: gpio
+            then:
+              properties:
+                groups:
+                  enum: [gpio28, gpio29, gpio30, gpio31, gpio32,
+                         gpio33, gpio34, gpio35, gpio36, gpio37]
+          - if:
+              properties:
+                function:
+                  const: pcie_reset
+            then:
+              properties:
+                groups:
+                  enum: [pcie_reset0, pcie_reset1]
+          - if:
+              properties:
+                function:
+                  const: pwm
+            then:
+              properties:
+                groups:
+                  enum: [gpio0, gpio1, gpio2, gpio3, gpio4, gpio5, gpio6,
+                         gpio7, gpio8, gpio9, gpio10, gpio11, gpio12, gpio13,
+                         gpio14, gpio15, gpio16, gpio17, gpio18, gpio19,
+                         gpio20, gpio21, gpio22, gpio23, gpio24, gpio25,
+                         gpio26, gpio27, gpio28, gpio29, gpio30, gpio31,
+                         gpio36, gpio37]
+          - if:
+              properties:
+                function:
+                  const: phy1_led0
+            then:
+              properties:
+                groups:
+                  enum: [gpio8, gpio9, gpio10, gpio11]
+          - if:
+              properties:
+                function:
+                  const: phy2_led0
+            then:
+              properties:
+                groups:
+                  enum: [gpio8, gpio9, gpio10, gpio11]
+          - if:
+              properties:
+                function:
+                  const: phy3_led0
+            then:
+              properties:
+                groups:
+                  enum: [gpio8, gpio9, gpio10, gpio11]
+          - if:
+              properties:
+                function:
+                  const: phy4_led0
+            then:
+              properties:
+                groups:
+                  enum: [gpio8, gpio9, gpio10, gpio11]
+          - if:
+              properties:
+                function:
+                  const: phy1_led1
+            then:
+              properties:
+                groups:
+                  enum: [gpio4, gpio5, gpio6, gpio7]
+          - if:
+              properties:
+                function:
+                  const: phy2_led1
+            then:
+              properties:
+                groups:
+                  enum: [gpio4, gpio5, gpio6, gpio7]
+          - if:
+              properties:
+                function:
+                  const: phy3_led1
+            then:
+              properties:
+                groups:
+                  enum: [gpio4, gpio5, gpio6, gpio7]
+          - if:
+              properties:
+                function:
+                  const: phy4_led1
+            then:
+              properties:
+                groups:
+                  enum: [gpio4, gpio5, gpio6, gpio7]
+
+        additionalProperties: false
+
+      '^conf(-|$)':
+        type: object
+
+        description:
+          pinconf configuration nodes.
+
+        $ref: /schemas/pinctrl/pincfg-node.yaml
+
+        properties:
+          pins:
+            description:
+              An array of strings. Each string contains the name of a pin.
+            items:
+              enum: [gpio0, gpio1, gpio2, gpio3, gpio4, gpio5, gpio6, gpio7,
+                     gpio8, gpio9, gpio10, gpio11, gpio12, gpio13, gpio14,
+                     gpio15, gpio16, gpio17, gpio18, gpio19, gpio20, gpio21,
+                     gpio22, gpio23, gpio24, gpio25, gpio26, gpio27,
+                     pcie_reset0, pcie_reset1, i2c_scl, i2c_sda, spi_clk,
+                     spi_cs, spi_mosi, spi_miso, uart_txd, uart_rxd]
+            minItems: 1
+            maxItems: 38
+
+          bias-disable: true
+
+          bias-pull-up: true
+
+          bias-pull-down: true
+
+          input-enable: true
+
+          output-enable: true
+
+          output-low: true
+
+          output-high: true
+
+          drive-open-drain: true
+
+          drive-strength:
+            description:
+              Selects the drive strength for MIO pins, in mA.
+            enum: [2, 4, 6, 8]
+
+        required:
+          - pins
+
+        additionalProperties: false
+
+    additionalProperties: false
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    pinctrl {
+      compatible = "airoha,an7563-pinctrl";
+
+      interrupt-parent = <&gic>;
+      interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+
+      gpio-controller;
+      #gpio-cells = <2>;
+
+      interrupt-controller;
+      #interrupt-cells = <2>;
+
+      gpio-ranges = <&pinctrl 0 0 38>;
+
+      pcie1-rst-pins {
+        conf {
+          pins = "pcie_reset1";
+          drive-open-drain = <1>;
+        };
+      };
+
+      pwm-pins {
+        mux {
+          function = "pwm";
+          groups = "gpio18";
+        };
+      };
+
+      spi-pins {
+        mux {
+          function = "spi";
+          groups = "spi_quad", "spi_cs1";
+        };
+      };
+
+      hsuart-pins {
+        mux {
+          function = "uart";
+          groups = "hsuart", "hsuart_cts_rts";
+        };
+      };
+
+      mdio-pins {
+        mux {
+          function = "mdio";
+          groups = "mdio";
+        };
+
+        conf {
+          pins = "gpio2";
+          output-enable;
+        };
+      };
+    };