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+One-register-per-pin type device tree based pinctrl driver
+
+Required properties:
+- compatible : "pinctrl-single"
+
+- reg : offset and length of the register set for the mux registers
+
+- pinctrl-single,register-width : pinmux register access width in bits
+
+- pinctrl-single,function-mask : mask of allowed pinmux function bits
+ in the pinmux register
+
+Optional properties:
+- pinctrl-single,function-off : function off mode for disabled state if
+ available and same for all registers; if not specified, disabling of
+ pin functions is ignored
+
+This driver assumes that there is only one register for each pin,
+and uses the common pinctrl bindings as specified in the pinctrl-bindings.txt
+document in this directory.
+
+The pin configuration nodes for pinctrl-single are specified as pinctrl
+register offset and value pairs using pinctrl-single,pins. Only the bits
+specified in pinctrl-single,function-mask are updated. For example, setting
+a pin for a device could be done with:
+
+ pinctrl-single,pins = <0xdc 0x118>;
+
+Where 0xdc is the offset from the pinctrl register base address for the
+device pinctrl register, and 0x118 contains the desired value of the
+pinctrl register. See the device example and static board pins example
+below for more information.
+
+Example:
+
+/* SoC common file */
+
+/* first controller instance for pins in core domain */
+pmx_core: pinmux@4a100040 {
+ compatible = "pinctrl-single";
+ reg = <0x4a100040 0x0196>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-single,register-width = <16>;
+ pinctrl-single,function-mask = <0xffff>;
+};
+
+/* second controller instance for pins in wkup domain */
+pmx_wkup: pinmux@4a31e040 {
+ compatible = "pinctrl-single;
+ reg = <0x4a31e040 0x0038>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-single,register-width = <16>;
+ pinctrl-single,function-mask = <0xffff>;
+};
+
+
+/* board specific .dts file */
+
+&pmx_core {
+
+ /*
+ * map all board specific static pins enabled by the pinctrl driver
+ * itself during the boot (or just set them up in the bootloader)
+ */
+ pinctrl-names = "default";
+ pinctrl-0 = <&board_pins>;
+
+ board_pins: pinmux_board_pins {
+ pinctrl-single,pins = <
+ 0x6c 0xf
+ 0x6e 0xf
+ 0x70 0xf
+ 0x72 0xf
+ >;
+ };
+
+ /* map uart2 pins */
+ uart2_pins: pinmux_uart2_pins {
+ pinctrl-single,pins = <
+ 0xd8 0x118
+ 0xda 0
+ 0xdc 0x118
+ 0xde 0
+ >;
+ };
+};
+
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart2_pins>;
+};