dt-bindings: pinctrl: Add binding for BCM4908 pinctrl

It's hardware block that is part of every SoC from BCM4908 family.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220124102243.14912-1-zajec5@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/brcm,bcm4908-pinctrl.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/brcm,bcm4908-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM4908 pin controller
+
+maintainers:
+  - Rafał Miłecki <rafal@milecki.pl>
+
+description:
+  Binding for pin controller present on BCM4908 family SoCs.
+
+properties:
+  compatible:
+    const: brcm,bcm4908-pinctrl
+
+  reg:
+    maxItems: 1
+
+patternProperties:
+  '-pins$':
+    type: object
+    $ref: pinmux-node.yaml#
+
+    properties:
+      function:
+        enum: [ led_0, led_1, led_2, led_3, led_4, led_5, led_6, led_7, led_8,
+                led_9, led_10, led_11, led_12, led_13, led_14, led_15, led_16,
+                led_17, led_18, led_19, led_20, led_21, led_22, led_23, led_24,
+                led_25, led_26, led_27, led_28, led_29, led_30, led_31,
+                hs_uart, i2c, i2s, nand_ctrl, nand_data, emmc_ctrl, usb0_pwr,
+                usb1_pwr ]
+
+      groups:
+        minItems: 1
+        maxItems: 2
+        items:
+          enum: [ led_0_grp_a, led_1_grp_a, led_2_grp_a, led_3_grp_a,
+                  led_4_grp_a, led_5_grp_a, led_6_grp_a, led_7_grp_a,
+                  led_8_grp_a, led_9_grp_a, led_10_grp_a, led_10_grp_b,
+                  led_11_grp_a, led_11_grp_b, led_12_grp_a, led_12_grp_b,
+                  led_13_grp_a, led_13_grp_b, led_14_grp_a, led_15_grp_a,
+                  led_16_grp_a, led_17_grp_a, led_18_grp_a, led_19_grp_a,
+                  led_20_grp_a, led_21_grp_a, led_22_grp_a, led_23_grp_a,
+                  led_24_grp_a, led_25_grp_a, led_26_grp_a, led_27_grp_a,
+                  led_28_grp_a, led_29_grp_a, led_30_grp_a, led_31_grp_a,
+                  led_31_grp_b, hs_uart_grp, i2c_grp_a, i2c_grp_b, i2s_grp,
+                  nand_ctrl_grp, nand_data_grp, emmc_ctrl_grp, usb0_pwr_grp,
+                  usb1_pwr_grp ]
+
+allOf:
+  - $ref: pinctrl.yaml#
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    pinctrl@ff800560 {
+        compatible = "brcm,bcm4908-pinctrl";
+        reg = <0xff800560 0x10>;
+
+        led_0-a-pins {
+            function = "led_0";
+            groups = "led_0_grp_a";
+        };
+    };

MAINTAINERS

@@ -3688,6 +3688,13 @@ F:	Documentation/devicetree/bindings/net/brcm,bcm4908-enet.yaml
 F:	drivers/net/ethernet/broadcom/bcm4908_enet.*
 F:	drivers/net/ethernet/broadcom/unimac.h
 
+BROADCOM BCM4908 PINMUX DRIVER
+M:	Rafał Miłecki <rafal@milecki.pl>
+M:	bcm-kernel-feedback-list@broadcom.com
+L:	linux-gpio@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/pinctrl/brcm,bcm4908-pinctrl.yaml
+
 BROADCOM BCM5301X ARM ARCHITECTURE
 M:	Florian Fainelli <f.fainelli@gmail.com>
 M:	Hauke Mehrtens <hauke@hauke-m.de>