pinctrl: mvebu: pinctrl driver core

* Marvell SoC pinctrl core driver for mpp

The pinctrl driver enables Marvell SoCs to configure the multi-purpose pins

(mpp) to a specific function. For each SoC family there is a SoC specific

driver using this core driver.

Please refer to pinctrl-bindings.txt in this directory for details of the

common pinctrl bindings used by client devices, including the meaning of the

phrase "pin configuration node".

A Marvell SoC pin configuration node is a node of a group of pins which can

be used for a specific device or function. Each node requires one or more

mpp pins or group of pins and a mpp function common to all pins.

Required properties for pinctrl driver:

- compatible: "marvell,<soc>-pinctrl"

  Please refer to each marvell,<soc>-pinctrl.txt binding doc for supported SoCs.

Required properties for pin configuration node:

- marvell,pins: string array of mpp pins or group of pins to be muxed.

- marvell,function: string representing a function to mux to for all

    marvell,pins given in this pin configuration node. The function has to be

    common for all marvell,pins. Please refer to marvell,<soc>-pinctrl.txt for

    valid pin/pin group names and available function names for each SoC.

Examples:

uart1: serial@12100 {

	compatible = "ns16550a";

	reg = <0x12100 0x100>;

	reg-shift = <2>;

	interrupts = <7>;

	pinctrl-0 = <&pmx_uart1_sw>;

	pinctrl-names = "default";

};

pinctrl: pinctrl@d0200 {

	compatible = "marvell,dove-pinctrl";

	reg = <0xd0200 0x20>;

	pmx_uart1_sw: pmx-uart1-sw {

		marvell,pins = "mpp_uart1";

		marvell,function = "uart1";

	};

};

	select IRQ_DOMAIN

	select COMMON_CLK

	select PLAT_ORION

	select PINCTRL

	help

	  Support for the Marvell SoC Family with device tree support

	  COH 901 335 and COH 901 571/3. They contain 3, 5 or 7

	  ports of 8 GPIO pins each.

config PINCTRL_MVEBU

	bool

	depends on ARCH_MVEBU

	select PINMUX

	select PINCONF

source "drivers/pinctrl/spear/Kconfig"

endmenu

obj-$(CONFIG_PINCTRL_TEGRA30)	+= pinctrl-tegra30.o

obj-$(CONFIG_PINCTRL_U300)	+= pinctrl-u300.o

obj-$(CONFIG_PINCTRL_COH901)	+= pinctrl-coh901.o

obj-$(CONFIG_PINCTRL_MVEBU)	+= pinctrl-mvebu.o

obj-$(CONFIG_PLAT_SPEAR)	+= spear/