pinctrl: Broadcom Cygnus pinctrl device tree binding

Broadcom Cygnus IOMUX Controller

The Cygnus IOMUX controller supports group based mux configuration. In

addition, certain pins can be muxed to GPIO function individually.

Required properties:

- compatible:

    Must be "brcm,cygnus-pinmux"

- reg:

    Define the base and range of the I/O address space that contains the Cygnus

IOMUX registers

Properties in subnodes:

- function:

    The mux function to select

- groups:

    The list of groups to select with a given function

For more details, refer to

Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt

For example:

	pinmux: pinmux@0x0301d0c8 {

		compatible = "brcm,cygnus-pinmux";

		reg = <0x0301d0c8 0x1b0>;

		pinctrl-names = "default";

		pinctrl-0 = <&i2s0_default>;

		i2s0_default: i2s0_default {

			mux {

				function = "i2s0";

				groups = "i2s0_0_grp", "i2s0_1_grp";

			};

		};

	};

List of supported functions and groups in Cygnus:

"i2s0": "i2s0_0_grp", "i2s0_1_grp"

"i2s1": "i2s1_0_grp", "i2s1_1_grp"

"i2s2": "i2s2_0_grp", "i2s2_1_grp", "i2s2_2_grp", "i2s2_3_grp", "i2s2_4_grp"

"spdif": "spdif_grp"

"pwm0": "pwm0_grp"

"pwm1": "pwm1_grp"

"pwm2": "pwm2_grp"

"pwm3": "pwm3_grp"

"pwm4": "pwm4_grp"

"pwm5": "pwm5_grp"

"key": "key0_grp", "key1_grp", "key2_grp", "key3_grp", "key4_grp", "key5_grp",

"key6_grp", "key7_grp", "key8_grp", "key9_grp", "key10_grp", "key11_grp",

"key12_grp", "key13_grp", "key14_grp", "key15_grp"

"audio_dte": "audio_dte0_grp", "audio_dte1_grp", "audio_dte2_grp", "audio_dte3_grp"

"smart_card0": "smart_card0_grp", "smart_card0_fcb_grp"

"smart_card1": "smart_card1_grp", "smart_card1_fcb_grp"

"spi0": "spi0_grp"

"spi1": "spi1_grp"

"spi2": "spi2_grp"

"spi3": "spi3_grp"

"spi4": "spi4_0_grp", "spi4_1_grp"

"spi5": "spi5_grp"

"sw_led0": "sw_led0_0_grp", "sw_led0_1_grp"

"sw_led1": "sw_led1_grp"

"sw_led2": "sw_led2_0_grp", "sw_led2_1_grp"

"d1w": "d1w_grp"

"lcd": "lcd_grp"

"sram": "sram_0_grp", "sram_1_grp"

"uart0": "uart0_grp"

"uart1": "uart1_grp", "uart1_dte_grp"

"uart2": "uart2_grp"

"uart3": "uart3_grp"

"uart4": "uart4_grp"

"qspi": "qspi_0_grp", "qspi_1_grp"

"nand": "nand_grp"

"sdio0": "sdio0_grp", "sdio0_cd_grp", "sdio0_mmc_grp"

"sdio1": "sdio1_data_0_grp", "sdio1_data_1_grp", "sdio1_cd_grp",

"sdio1_led_grp", "sdio1_mmc_grp"

"can0": "can0_grp"

"can1": "can1_grp"

"cam": "cam_led_grp", "cam_0_grp", "cam_1_grp"

"bsc1": "bsc1_grp"

"pcie_clkreq": "pcie_clkreq_grp"

"usb0_oc": "usb0_oc_grp"

"usb1_oc": "usb1_oc_grp"

"usb2_oc": "usb2_oc_grp"