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diff --git a/dts/src/arm/am3874-iceboard.dts b/dts/src/arm/am3874-iceboard.dts
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+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device tree for Winterland IceBoard
+ *
+ * http://mcgillcosmology.com
+ * http://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@0 {
+ /* FMC A */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+ i2c-mux-idle-disconnect;
+ };
+
+ i2c@1 {
+ /* FMC B */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+ i2c-mux-idle-disconnect;
+ };
+
+ i2c@2 {
+ /* QSFP A */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <2>;
+ i2c-mux-idle-disconnect;
+ };
+
+ i2c@3 {
+ /* QSFP B */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <3>;
+ i2c-mux-idle-disconnect;
+ };
+
+ i2c@4 {
+ /* SFP */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <4>;
+ i2c-mux-idle-disconnect;
+ };
+
+ i2c@5 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <5>;
+ i2c-mux-idle-disconnect;
+
+ 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-mux-idle-disconnect;
+ };
+
+ i2c@7 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <7>;
+ i2c-mux-idle-disconnect;
+
+ 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";
+};