arch/arm/boot/dts/am3874-iceboard.dts

// SPDX-License-Identifier: GPL-2.0
/*
 * Device tree for Winterland IceBoard
 *
 * https://mcgillcosmology.com
 * https://threespeedlogic.com
 *
 * This is an ARM + FPGA instrumentation board used at telescopes in
 * Antarctica (the South Pole Telescope), Chile (POLARBEAR), and at the DRAO
 * observatory in British Columbia (CHIME).
 *
 * Copyright (c) 2019 Three-Speed Logic, Inc. <gsmecher@threespeedlogic.com>
 */

/dts-v1/;

#include "dm814x.dtsi"
#include <dt-bindings/interrupt-controller/irq.h>

/ {
	model = "Winterland IceBoard";
	compatible = "ti,dm8148", "ti,dm814";

	chosen {
		stdout-path = "serial1:115200n8";
		bootargs = "earlycon";
	};

	memory@80000000 {
		device_type = "memory";
		reg = <0x80000000 0x40000000>;	/* 1 GB */
	};

	vmmcsd_fixed: fixedregulator0 {
		compatible = "regulator-fixed";
		regulator-name = "vmmcsd_fixed";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
	};
};

/* The MAC provides internal delay for the transmit path ONLY, which is enabled
 * provided no -id/-txid/-rxid suffix is provided to "phy-mode".
 *
 * The receive path is delayed at the PHY. The recommended register settings
 * are 0xf0 for the control bits, and 0x7777 for the data bits. However, the
 * conversion code in the kernel lies: the PHY's registers are 120 ps per tap,
 * and the kernel assumes 200 ps per tap. So we have fudged the numbers here to
 * obtain the correct register settings.
 */
&mac { dual_emac = <1>; };
&cpsw_emac0 {
	phy-handle = <&ethphy0>;
	phy-mode = "rgmii";
	dual_emac_res_vlan = <1>;
};
&cpsw_emac1 {
	phy-handle = <&ethphy1>;
	phy-mode = "rgmii";
	dual_emac_res_vlan = <2>;
};

&davinci_mdio {
	ethphy0: ethernet-phy@0 {
		reg = <0x2>;

		rxc-skew-ps = <3000>;
		rxdv-skew-ps = <0>;

		rxd3-skew-ps = <0>;
		rxd2-skew-ps = <0>;
		rxd1-skew-ps = <0>;
		rxd0-skew-ps = <0>;

		phy-reset-gpios = <&gpio2 8 GPIO_ACTIVE_LOW>;
	};

	ethphy1: ethernet-phy@1 {
		reg = <0x1>;

		rxc-skew-ps = <3000>;
		rxdv-skew-ps = <0>;

		rxd3-skew-ps = <0>;
		rxd2-skew-ps = <0>;
		rxd1-skew-ps = <0>;
		rxd0-skew-ps = <0>;

		phy-reset-gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
	};
};

&mmc1 { status = "disabled"; };
&mmc2 {
	pinctrl-names = "default";
	pinctrl-0 = <&mmc2_pins>;
	vmmc-supply = <&vmmcsd_fixed>;
	bus-width = <4>;
};
&mmc3 { status = "disabled"; };

&i2c1 {
	/* Most I2C activity happens through this port, with the sole exception
	 * of the backplane. Since there are multiply assigned addresses, the
	 * "i2c-mux-idle-disconnect" is important.
	 */

	pca9548@70 {
		compatible = "nxp,pca9548";
		reg = <0x70>;
		#address-cells = <1>;
		#size-cells = <0>;
		i2c-mux-idle-disconnect;

		i2c@0 {
			/* FMC A */
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0>;
		};

		i2c@1 {
			/* FMC B */
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <1>;
		};

		i2c@2 {
			/* QSFP A */
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <2>;
		};

		i2c@3 {
			/* QSFP B */
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <3>;
		};

		i2c@4 {
			/* SFP */
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <4>;
		};

		i2c@5 {
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <5>;

			ina230@40 { compatible = "ti,ina230"; reg = <0x40>; shunt-resistor = <5000>; };
			ina230@41 { compatible = "ti,ina230"; reg = <0x41>; shunt-resistor = <5000>; };
			ina230@42 { compatible = "ti,ina230"; reg = <0x42>; shunt-resistor = <5000>; };

			ina230@44 { compatible = "ti,ina230"; reg = <0x44>; shunt-resistor = <5000>; };
			ina230@45 { compatible = "ti,ina230"; reg = <0x45>; shunt-resistor = <5000>; };
			ina230@46 { compatible = "ti,ina230"; reg = <0x46>; shunt-resistor = <5000>; };

			ina230@47 { compatible = "ti,ina230"; reg = <0x47>; shunt-resistor = <5500>; };
			ina230@48 { compatible = "ti,ina230"; reg = <0x48>; shunt-resistor = <2360>; };
			ina230@49 { compatible = "ti,ina230"; reg = <0x49>; shunt-resistor = <2360>; };
			ina230@43 { compatible = "ti,ina230"; reg = <0x43>; shunt-resistor = <2360>; };
			ina230@4b { compatible = "ti,ina230"; reg = <0x4b>; shunt-resistor = <5500>; };
			ina230@4c { compatible = "ti,ina230"; reg = <0x4c>; shunt-resistor = <2360>; };
			ina230@4d { compatible = "ti,ina230"; reg = <0x4d>; shunt-resistor = <770>; };
			ina230@4e { compatible = "ti,ina230"; reg = <0x4e>; shunt-resistor = <770>; };
			ina230@4f { compatible = "ti,ina230"; reg = <0x4f>; shunt-resistor = <770>; };
		};

		i2c@6 {
			/* Backplane */
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <6>;
		};

		i2c@7 {
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <7>;

			u41: pca9575@20 {
				compatible = "nxp,pca9575";
				reg = <0x20>;
				gpio-controller;
				#gpio-cells = <2>;

				gpio-line-names =
					"FMCA_EN_12V0", "FMCA_EN_3V3", "FMCA_EN_VADJ", "FMCA_PG_M2C",
					"FMCA_PG_C2M", "FMCA_PRSNT_M2C_L", "FMCA_CLK_DIR", "SFP_LOS",
					"FMCB_EN_12V0", "FMCB_EN_3V3", "FMCB_EN_VADJ", "FMCB_PG_M2C",
					"FMCB_PG_C2M", "FMCB_PRSNT_M2C_L", "FMCB_CLK_DIR", "SFP_ModPrsL";
				reset-gpios = <&gpio2 11 GPIO_ACTIVE_LOW>;
			};

			u42: pca9575@21 {
				compatible = "nxp,pca9575";
				reg = <0x21>;
				gpio-controller;
				#gpio-cells = <2>;
				gpio-line-names =
					"QSFPA_ModPrsL", "QSFPA_IntL", "QSFPA_ResetL", "QSFPA_ModSelL",
					"QSFPA_LPMode", "QSFPB_ModPrsL", "QSFPB_IntL", "QSFPB_ResetL",
					"SFP_TxFault", "SFP_TxDisable", "SFP_RS0", "SFP_RS1",
					"QSFPB_ModSelL", "QSFPB_LPMode", "SEL_SFP", "ARM_MR";
				reset-gpios = <&gpio2 11 GPIO_ACTIVE_LOW>;
			};

			u48: pca9575@22 {
				compatible = "nxp,pca9575";
				reg=<0x22>;
				gpio-controller;
				#gpio-cells = <2>;

				sw-gpios = <&u48 0 0>, <&u48 1 0>, <&u48 2 0>, <&u48 3 0>,
					<&u48 4 0>, <&u48 5 0>, <&u48 6 0>, <&u48 7 0>;
				led-gpios = <&u48 7 0>, <&u48 6 0>, <&u48 5 0>, <&u48 4 0>,
					<&u48 3 0>, <&u48 2 0>, <&u48 1 0>, <&u48 0 0>;

				gpio-line-names =
					"GP_SW1", "GP_SW2", "GP_SW3", "GP_SW4",
					"GP_SW5", "GP_SW6", "GP_SW7", "GP_SW8",
					"GP_LED8", "GP_LED7", "GP_LED6", "GP_LED5",
					"GP_LED4", "GP_LED3", "GP_LED2", "GP_LED1";
				reset-gpios = <&gpio2 11 GPIO_ACTIVE_LOW>;
			};

			u59: pca9575@23 {
				compatible = "nxp,pca9575";
				reg=<0x23>;
				gpio-controller;
				#gpio-cells = <2>;
				gpio-line-names =
					"GP_LED9", "GP_LED10", "GP_LED11", "GP_LED12",
					"GTX1V8PowerFault", "PHYAPowerFault", "PHYBPowerFault", "ArmPowerFault",
					"BP_SLOW_GPIO0", "BP_SLOW_GPIO1", "BP_SLOW_GPIO2", "BP_SLOW_GPIO3",
					"BP_SLOW_GPIO4", "BP_SLOW_GPIO5", "__unused_u59_p16", "__unused_u59_p17";
				reset-gpios = <&gpio2 11 GPIO_ACTIVE_LOW>;
			};

			tmp100@48 { compatible = "ti,tmp100"; reg = <0x48>; };
			tmp100@4a { compatible = "ti,tmp100"; reg = <0x4a>; };
			tmp100@4b { compatible = "ti,tmp100"; reg = <0x4b>; };
			tmp100@4c { compatible = "ti,tmp100"; reg = <0x4c>; };

			/* EEPROM bank and serial number are treated as separate devices */
			at24c01@57 { compatible = "atmel,24c01"; reg = <0x57>; };
			at24cs01@5f { compatible = "atmel,24cs01"; reg = <0x5f>; };
		};
	};
};

&i2c2 {
	pca9548@71 {
		compatible = "nxp,pca9548";
		reg = <0x71>;
		#address-cells = <1>;
		#size-cells = <0>;

		i2c@6 {
			/* Backplane */
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <6>;
			multi-master;

			/* All backplanes should have this -- it's how we know they're there. */
			at24c08@54 { compatible="atmel,24c08"; reg=<0x54>; };
			at24cs08@5c { compatible="atmel,24cs08"; reg=<0x5c>; };

			/* 16 slot backplane */
			tmp421@4d { compatible="ti,tmp421"; reg=<0x4d>; };
			tmp421@4e { compatible="ti,tmp421"; reg=<0x4e>; };
			ina230@40 { compatible = "ti,ina230"; reg = <0x40>; shunt-resistor = <2360>; };
			amc6821@18 { compatible = "ti,amc6821"; reg = <0x18>; };

			/* Single slot backplane */
		};
	};
};

&pincntl {
	mmc2_pins: pinmux_mmc2_pins {
		pinctrl-single,pins = <
			DM814X_IOPAD(0x0800, PIN_INPUT | 0x1)	/* SD1_CLK */
			DM814X_IOPAD(0x0804, PIN_INPUT_PULLUP | 0x1)	/* SD1_CMD */
			DM814X_IOPAD(0x0808, PIN_INPUT_PULLUP | 0x1)	/* SD1_DAT[0] */
			DM814X_IOPAD(0x080c, PIN_INPUT_PULLUP | 0x1)	/* SD1_DAT[1] */
			DM814X_IOPAD(0x0810, PIN_INPUT_PULLUP | 0x1)	/* SD1_DAT[2] */
			DM814X_IOPAD(0x0814, PIN_INPUT_PULLUP | 0x1)	/* SD1_DAT[3] */
			DM814X_IOPAD(0x0924, PIN_INPUT_PULLUP | 0x40)	/* SD1_POW */
			DM814X_IOPAD(0x0928, PIN_INPUT | 0x40)	/* SD1_SDWP */
			DM814X_IOPAD(0x093C, PIN_INPUT | 0x2)	/* SD1_SDCD */
			>;
	};

	usb0_pins: pinmux_usb0_pins {
		pinctrl-single,pins = <
			DM814X_IOPAD(0x0c34, PIN_OUTPUT | 0x1)	/* USB0_DRVVBUS */
			>;
	};

	usb1_pins: pinmux_usb1_pins {
		pinctrl-single,pins = <
			DM814X_IOPAD(0x0834, PIN_OUTPUT | 0x80)	/* USB1_DRVVBUS */
			>;
	};

	gpio1_pins: pinmux_gpio1_pins {
		pinctrl-single,pins = <
			DM814X_IOPAD(0x081c, PIN_OUTPUT | 0x80)	/* PROGRAM_B */
			DM814X_IOPAD(0x0820, PIN_INPUT | 0x80)	/* INIT_B */
			DM814X_IOPAD(0x0824, PIN_INPUT | 0x80)	/* DONE */

			DM814X_IOPAD(0x0838, PIN_INPUT_PULLUP | 0x80) /* FMCA_TMS */
			DM814X_IOPAD(0x083c, PIN_INPUT_PULLUP | 0x80) /* FMCA_TCK */
			DM814X_IOPAD(0x0898, PIN_INPUT_PULLUP | 0x80) /* FMCA_TDO */
			DM814X_IOPAD(0x089c, PIN_INPUT_PULLUP | 0x80) /* FMCA_TDI */
			DM814X_IOPAD(0x08ac, PIN_INPUT_PULLUP | 0x80) /* FMCA_TRST */

			DM814X_IOPAD(0x08b0, PIN_INPUT_PULLUP | 0x80) /* FMCB_TMS */
			DM814X_IOPAD(0x0a88, PIN_INPUT_PULLUP | 0x80) /* FMCB_TCK */
			DM814X_IOPAD(0x0a8c, PIN_INPUT_PULLUP | 0x80) /* FMCB_TDO */
			DM814X_IOPAD(0x08bc, PIN_INPUT_PULLUP | 0x80) /* FMCB_TDI */
			DM814X_IOPAD(0x0a94, PIN_INPUT_PULLUP | 0x80) /* FMCB_TRST */

			DM814X_IOPAD(0x08d4, PIN_INPUT_PULLUP | 0x80) /* FPGA_TMS */
			DM814X_IOPAD(0x0aa8, PIN_INPUT_PULLUP | 0x80) /* FPGA_TCK */
			DM814X_IOPAD(0x0adc, PIN_INPUT_PULLUP | 0x80) /* FPGA_TDO */
			DM814X_IOPAD(0x0ab0, PIN_INPUT_PULLUP | 0x80) /* FPGA_TDI */
			>;
	};

	gpio2_pins: pinmux_gpio2_pins {
		pinctrl-single,pins = <
			DM814X_IOPAD(0x090c, PIN_INPUT_PULLUP | 0x80) /* PHY A IRQ */
			DM814X_IOPAD(0x0910, PIN_INPUT_PULLUP | 0x80) /* PHY A RESET */
			DM814X_IOPAD(0x08f4, PIN_INPUT_PULLUP | 0x80) /* PHY B IRQ */
			DM814X_IOPAD(0x08f8, PIN_INPUT_PULLUP | 0x80) /* PHY B RESET */

			//DM814X_IOPAD(0x0a14, PIN_INPUT_PULLUP | 0x80) /* ARM IRQ */
			//DM814X_IOPAD(0x0900, PIN_INPUT | 0x80) /* GPIO IRQ */
			DM814X_IOPAD(0x0a2c, PIN_INPUT_PULLUP | 0x80) /* GPIO RESET */
		>;
	};

	gpio4_pins: pinmux_gpio4_pins {
		pinctrl-single,pins = <
			/* The PLL doesn't react well to the SPI controller reset, so
			 * we force the CS lines to pull up as GPIOs until we're ready.
			 * See https://e2e.ti.com/support/processors/f/791/t/276011?Linux-support-for-AM3874-DM8148-in-Arago-linux-omap3
			 */
			DM814X_IOPAD(0x0b3c, PIN_INPUT_PULLUP | 0x80) /* BP_ARM_GPIO0 */
			DM814X_IOPAD(0x0b40, PIN_INPUT_PULLUP | 0x80) /* BP_ARM_GPIO1 */
			DM814X_IOPAD(0x0b44, PIN_INPUT_PULLUP | 0x80) /* BP_ARM_GPIO2 */
			DM814X_IOPAD(0x0b48, PIN_INPUT_PULLUP | 0x80) /* BP_ARM_GPIO3 */
			DM814X_IOPAD(0x0b4c, PIN_INPUT_PULLUP | 0x80) /* BP_ARM_GPIO4 */
			DM814X_IOPAD(0x0b50, PIN_INPUT_PULLUP | 0x80) /* BP_ARM_GPIO5 */
		>;
	};

	spi2_pins: pinmux_spi2_pins {
		pinctrl-single,pins = <
			DM814X_IOPAD(0x0950, PIN_INPUT_PULLUP | 0x80) /* PLL SPI CS1 as GPIO */
			DM814X_IOPAD(0x0818, PIN_INPUT_PULLUP | 0x80) /* PLL SPI CS2 as GPIO */
		>;
	};

	spi4_pins: pinmux_spi4_pins {
		pinctrl-single,pins = <
			DM814X_IOPAD(0x0a7c, 0x20)
			DM814X_IOPAD(0x0b74, 0x20)
			DM814X_IOPAD(0x0b78, PIN_OUTPUT | 0x20)
			DM814X_IOPAD(0x0b7c, PIN_OUTPUT_PULLDOWN | 0x20)
			DM814X_IOPAD(0x0b80, PIN_INPUT | 0x20)
		>;
	};
};

&gpio1 {
	pinctrl-names = "default";
	pinctrl-0 = <&gpio1_pins>;
	gpio-line-names =
		"", "PROGRAM_B", "INIT_B", "DONE",			/* 0-3 */
		"", "", "", "",						/* 4-7 */
		"FMCA_TMS", "FMCA_TCK", "FMCA_TDO", "FMCA_TDI",		/* 8-11 */
		"", "", "", "FMCA_TRST",				/* 12-15 */
		"FMCB_TMS", "FMCB_TCK", "FMCB_TDO", "FMCB_TDI",		/* 16-19 */
		"FMCB_TRST", "", "", "",				/* 20-23 */
		"FPGA_TMS", "FPGA_TCK", "FPGA_TDO", "FPGA_TDI",		/* 24-27 */
		"", "", "", "";						/* 28-31 */
};

&gpio2 {
	pinctrl-names = "default";
	pinctrl-0 = <&gpio2_pins>;
	gpio-line-names =
		"PHYA_IRQ_N", "PHYA_RESET_N", "", "",			/* 0-3 */
		"", "", "", "PHYB_IRQ_N",				/* 4-7 */
		"PHYB_RESET_N", "ARM_IRQ", "GPIO_IRQ", "";		/* 8-11 */
};

&gpio3 {
	pinctrl-names = "default";
	/*pinctrl-0 = <&gpio3_pins>;*/
	gpio-line-names =
		"", "", "ARMClkSel0", "",				/* 0-3 */
		"EnFPGARef", "", "", "ARMClkSel1";			/* 4-7 */
};

&gpio4 {
	pinctrl-names = "default";
	pinctrl-0 = <&gpio4_pins>;
	gpio-line-names =
		"BP_ARM_GPIO0", "BP_ARM_GPIO1", "BP_ARM_GPIO2", "BP_ARM_GPIO3",
		"BP_ARM_GPIO4", "BP_ARM_GPIO5";
};

&usb0 {
	pinctrl-names = "default";
	pinctrl-0 = <&usb0_pins>;
	dr_mode = "host";
};

&usb1 {
	pinctrl-names = "default";
	pinctrl-0 = <&usb1_pins>;
	dr_mode = "host";
};

&mcspi1 {
	s25fl256@0 {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "jedec,spi-nor";
		reg = <0>;
		spi-max-frequency = <40000000>;

		fsbl@0 {
			/* 256 kB */
			label = "U-Boot-min";
			reg = <0 0x40000>;
		};
		ssbl@1 {
			/* 512 kB */
			label = "U-Boot";
			reg = <0x40000 0x80000>;
		};
		bootenv@2 {
			/* 256 kB */
			label = "U-Boot Env";
			reg = <0xc0000 0x40000>;
		};
		kernel@3 {
			/* 4 MB */
			label = "Kernel";
			reg = <0x100000 0x400000>;
		};
		ipmi@4 {
			label = "IPMI FRU";
			reg = <0x500000 0x40000>;
		};
		fs@5 {
			label = "File System";
			reg = <0x540000 0x1ac0000>;
		};
	};
};

&mcspi3 {
	/* DMA event numbers stolen from MCASP */
	dmas = <&edma_xbar 8 0 16 &edma_xbar 9 0 17
		&edma_xbar 10 0 18 &edma_xbar 11 0 19>;
	dma-names = "tx0", "rx0", "tx1", "rx1";
};

&mcspi4 {
	pinctrl-names = "default";
	pinctrl-0 = <&spi4_pins>;

	/* DMA event numbers stolen from MCASP, MCBSP */
	dmas = <&edma_xbar 12 0 20 &edma_xbar 13 0 21>;
	dma-names = "tx0", "rx0";
};