linux/arch/arm/boot/dts/armada-388-clearfog.dtsi

// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/*
 * Device Tree include file for SolidRun Clearfog 88F6828 based boards
 *
 *  Copyright (C) 2015 Russell King
 *
 * This board is in development; the contents of this file work with
 * the A1 rev 2.0 of the board, which does not represent final
 * production board.  Things will change, don't expect this file to
 * remain compatible info the future.
 */

#include "armada-388.dtsi"
#include "armada-38x-solidrun-microsom.dtsi"

/ {
	aliases {
		/* So that mvebu u-boot can update the MAC addresses */
		ethernet1 = &eth0;
		ethernet2 = &eth1;
		ethernet3 = &eth2;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	reg_3p3v: regulator-3p3v {
		compatible = "regulator-fixed";
		regulator-name = "3P3V";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
	};

	soc {
		internal-regs {
			sata@a8000 {
				/* pinctrl? */
				status = "okay";
			};

			sata@e0000 {
				/* pinctrl? */
				status = "okay";
			};

			sdhci@d8000 {
				bus-width = <4>;
				cd-gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
				no-1-8-v;
				pinctrl-0 = <&microsom_sdhci_pins
					     &clearfog_sdhci_cd_pins>;
				pinctrl-names = "default";
				status = "okay";
				vmmc = <&reg_3p3v>;
				wp-inverted;
			};

			usb@58000 {
				/* CON3, nearest  power. */
				status = "okay";
			};

			usb3@f8000 {
				/* CON7 */
				status = "okay";
			};
		};

		pcie {
			status = "okay";
			/*
			 * The two PCIe units are accessible through
			 * the mini-PCIe connectors on the board.
			 */
			pcie@2,0 {
				/* Port 1, Lane 0. CON3, nearest power. */
				reset-gpios = <&expander0 1 GPIO_ACTIVE_LOW>;
				status = "okay";
			};
		};
	};

	sfp: sfp {
		compatible = "sff,sfp";
		i2c-bus = <&i2c1>;
		los-gpio = <&expander0 12 GPIO_ACTIVE_HIGH>;
		mod-def0-gpio = <&expander0 15 GPIO_ACTIVE_LOW>;
		tx-disable-gpio = <&expander0 14 GPIO_ACTIVE_HIGH>;
		tx-fault-gpio = <&expander0 13 GPIO_ACTIVE_HIGH>;
		maximum-power-milliwatt = <2000>;
	};
};

&eth1 {
	/* ethernet@30000 */
	bm,pool-long = <2>;
	bm,pool-short = <1>;
	buffer-manager = <&bm>;
	phy-mode = "sgmii";
	status = "okay";
};

&eth2 {
	/* ethernet@34000 */
	bm,pool-long = <3>;
	bm,pool-short = <1>;
	buffer-manager = <&bm>;
	managed = "in-band-status";
	phy-mode = "sgmii";
	sfp = <&sfp>;
	status = "okay";
};

&i2c0 {
	clock-frequency = <400000>;
	pinctrl-0 = <&i2c0_pins>;
	pinctrl-names = "default";
	status = "okay";

	/*
	 * PCA9655 GPIO expander, up to 1MHz clock.
	 *  0-CON3 CLKREQ#
	 *  1-CON3 PERST#
	 *  2-
	 *  3-CON3 W_DISABLE
	 *  4-
	 *  5-USB3 overcurrent
	 *  6-USB3 power
	 *  7-
	 *  8-JP4 P1
	 *  9-JP4 P4
	 * 10-JP4 P5
	 * 11-m.2 DEVSLP
	 * 12-SFP_LOS
	 * 13-SFP_TX_FAULT
	 * 14-SFP_TX_DISABLE
	 * 15-SFP_MOD_DEF0
	 */
	expander0: gpio-expander@20 {
		/*
		 * This is how it should be:
		 * compatible = "onnn,pca9655", "nxp,pca9555";
		 * but you can't do this because of the way I2C works.
		 */
		compatible = "nxp,pca9555";
		gpio-controller;
		#gpio-cells = <2>;
		reg = <0x20>;

		pcie1_0_clkreq {
			gpio-hog;
			gpios = <0 GPIO_ACTIVE_LOW>;
			input;
			line-name = "pcie1.0-clkreq";
		};
		pcie1_0_w_disable {
			gpio-hog;
			gpios = <3 GPIO_ACTIVE_LOW>;
			output-low;
			line-name = "pcie1.0-w-disable";
		};
		usb3_ilimit {
			gpio-hog;
			gpios = <5 GPIO_ACTIVE_LOW>;
			input;
			line-name = "usb3-current-limit";
		};
		usb3_power {
			gpio-hog;
			gpios = <6 GPIO_ACTIVE_HIGH>;
			output-high;
			line-name = "usb3-power";
		};
		m2_devslp {
			gpio-hog;
			gpios = <11 GPIO_ACTIVE_HIGH>;
			output-low;
			line-name = "m.2 devslp";
		};
	};

	/* The MCP3021 supports standard and fast modes */
	mikrobus_adc: mcp3021@4c {
		compatible = "microchip,mcp3021";
		reg = <0x4c>;
	};
};

&i2c1 {
	/*
	 * Routed to SFP, mikrobus, and PCIe.
	 * SFP limits this to 100kHz, and requires an AT24C01A/02/04 with
	 *  address pins tied low, which takes addresses 0x50 and 0x51.
	 * Mikrobus doesn't specify beyond an I2C bus being present.
	 * PCIe uses ARP to assign addresses, or 0x63-0x64.
	 */
	clock-frequency = <100000>;
	pinctrl-0 = <&clearfog_i2c1_pins>;
	pinctrl-names = "default";
	status = "okay";
};

&pinctrl {
	clearfog_i2c1_pins: i2c1-pins {
		/* SFP, PCIe, mSATA, mikrobus */
		marvell,pins = "mpp26", "mpp27";
		marvell,function = "i2c1";
	};
	clearfog_sdhci_cd_pins: clearfog-sdhci-cd-pins {
		marvell,pins = "mpp20";
		marvell,function = "gpio";
	};
	mikro_pins: mikro-pins {
		/* int: mpp22 rst: mpp29 */
		marvell,pins = "mpp22", "mpp29";
		marvell,function = "gpio";
	};
	mikro_spi_pins: mikro-spi-pins {
		marvell,pins = "mpp43";
		marvell,function = "spi1";
	};
	mikro_uart_pins: mikro-uart-pins {
		marvell,pins = "mpp24", "mpp25";
		marvell,function = "ua1";
	};
};

&spi1 {
	/*
	 * Add SPI CS pins for clearfog:
	 * CS0: W25Q32 (not populated on uSOM)
	 * CS1: PIC microcontroller (Pro models)
	 * CS2: mikrobus
	 */
	pinctrl-0 = <&spi1_pins &mikro_spi_pins>;
	pinctrl-names = "default";
	status = "okay";
};

&uart1 {
	/* mikrobus uart */
	pinctrl-0 = <&mikro_uart_pins>;
	pinctrl-names = "default";
	status = "okay";
};