arm64: dts: marvell: add DTS for Turris Mox

This adds support for the Turris Mox board from CZ.NIC.

Turris Mox is as modular router based on the Armada 3720 SOC (same as
EspressoBin).

The basic board can be extended by different modules.
If those are connected, U-Boot lets the kernel know via device-tree.

Since modules can be connected in different order and some modules can
be connected multiple times (up to three modules containing 8-port
ethernet switch in DSA configuration can be connected) we decided
against using device-tree overlays, because it got complicated rather
quickly. (For example the SFP module can be connected directly to the
CPU, or after a switch module. There are four cases and all would need
different SFP overlay. There are two types of switch modules (8-port
with pass-through and 4-port with no pass-through). For those we would
again need at least 6 more overlays.)

We therefore decided to put all the possibly connected devices in one
device-tree and disable them by default. When U-Boot finds out which
modules are connected, it fixes the loaded device-tree accordingly just
before boot. By Rob Herring's suggestion we also made it so that U-Boot
completely removes nodes which are disabled after this fixup.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Rob Herring <robh@kernel.org>
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

arch/arm64/boot/dts/marvell/Makefile

@@ -2,6 +2,7 @@
 # Mvebu SoC Family
 dtb-$(CONFIG_ARCH_MVEBU) += armada-3720-db.dtb
 dtb-$(CONFIG_ARCH_MVEBU) += armada-3720-espressobin.dtb
+dtb-$(CONFIG_ARCH_MVEBU) += armada-3720-turris-mox.dtb
 dtb-$(CONFIG_ARCH_MVEBU) += armada-3720-uDPU.dtb
 dtb-$(CONFIG_ARCH_MVEBU) += armada-7040-db.dtb
 dtb-$(CONFIG_ARCH_MVEBU) += armada-8040-clearfog-gt-8k.dtb

arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Device Tree file for CZ.NIC Turris Mox Board
+ * 2019 by Marek Behun <marek.behun@nic.cz>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/bus/moxtet.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include "armada-372x.dtsi"
+
+/ {
+	model = "CZ.NIC Turris Mox Board";
+	compatible = "cznic,turris-mox", "marvell,armada3720",
+		     "marvell,armada3710";
+
+	aliases {
+		spi0 = &spi0;
+		ethernet1 = &eth1;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x00000000 0x00000000 0x20000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		red {
+			label = "mox:red:activity";
+			gpios = <&gpiosb 21 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "default-on";
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpiosb 20 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	exp_usb3_vbus: usb3-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb3-vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		enable-active-high;
+		regulator-always-on;
+		gpio = <&gpiosb 0 GPIO_ACTIVE_HIGH>;
+	};
+
+	usb3_phy: usb3-phy {
+		compatible = "usb-nop-xceiv";
+		vcc-supply = <&exp_usb3_vbus>;
+	};
+
+	vsdc_reg: vsdc-reg {
+		compatible = "regulator-gpio";
+		regulator-name = "vsdc";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+
+		gpios = <&gpiosb 23 GPIO_ACTIVE_HIGH>;
+		gpios-states = <0>;
+		states = <1800000 0x1
+			  3300000 0x0>;
+		enable-active-high;
+	};
+
+	vsdio_reg: vsdio-reg {
+		compatible = "regulator-gpio";
+		regulator-name = "vsdio";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+
+		gpios = <&gpiosb 22 GPIO_ACTIVE_HIGH>;
+		gpios-states = <0>;
+		states = <1800000 0x1
+			  3300000 0x0>;
+		enable-active-high;
+	};
+
+	sdhci1_pwrseq: sdhci1-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&gpionb 19 GPIO_ACTIVE_HIGH>;
+		status = "okay";
+	};
+
+	sfp: sfp {
+		compatible = "sff,sfp+";
+		i2c-bus = <&i2c0>;
+		los-gpio = <&moxtet_sfp 0 GPIO_ACTIVE_HIGH>;
+		tx-fault-gpio = <&moxtet_sfp 1 GPIO_ACTIVE_HIGH>;
+		mod-def0-gpio = <&moxtet_sfp 2 GPIO_ACTIVE_LOW>;
+		tx-disable-gpio = <&moxtet_sfp 4 GPIO_ACTIVE_HIGH>;
+		rate-select0-gpio = <&moxtet_sfp 5 GPIO_ACTIVE_HIGH>;
+
+		/* enabled by U-Boot if SFP module is present */
+		status = "disabled";
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+	status = "okay";
+
+	rtc@6f {
+		compatible = "microchip,mcp7940x";
+		reg = <0x6f>;
+	};
+};
+
+&pcie_reset_pins {
+	function = "gpio";
+};
+
+&pcie0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie_reset_pins &pcie_clkreq_pins>;
+	status = "okay";
+	max-link-speed = <2>;
+	reset-gpios = <&gpiosb 3 GPIO_ACTIVE_LOW>;
+	phys = <&comphy1 0>;
+
+	/* enabled by U-Boot if PCIe module is present */
+	status = "disabled";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&eth0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii_pins>;
+	phy-mode = "rgmii-id";
+	phy = <&phy1>;
+	status = "okay";
+};
+
+&eth1 {
+	phy-mode = "2500base-x";
+	managed = "in-band-status";
+	phys = <&comphy0 1>;
+};
+
+&sdhci0 {
+	wp-inverted;
+	bus-width = <4>;
+	cd-gpios = <&gpionb 10 GPIO_ACTIVE_HIGH>;
+	vqmmc-supply = <&vsdc_reg>;
+	marvell,pad-type = "sd";
+	status = "okay";
+};
+
+&sdhci1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdio_pins>;
+	non-removable;
+	bus-width = <4>;
+	marvell,pad-type = "sd";
+	vqmmc-supply = <&vsdio_reg>;
+	mmc-pwrseq = <&sdhci1_pwrseq>;
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi_quad_pins &spi_cs1_pins>;
+	assigned-clocks = <&nb_periph_clk 7>;
+	assigned-clock-parents = <&tbg 1>;
+	assigned-clock-rates = <20000000>;
+
+	spi-flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <20000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "secure-firmware";
+				reg = <0x0 0x20000>;
+			};
+
+			partition@20000 {
+				label = "u-boot";
+				reg = <0x20000 0x160000>;
+			};
+
+			partition@180000 {
+				label = "u-boot-env";
+				reg = <0x180000 0x10000>;
+			};
+
+			partition@190000 {
+				label = "Rescue system";
+				reg = <0x190000 0x660000>;
+			};
+
+			partition@7f0000 {
+				label = "dtb";
+				reg = <0x7f0000 0x10000>;
+			};
+		};
+	};
+
+	moxtet: moxtet@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "cznic,moxtet";
+		reg = <1>;
+		reset-gpios = <&gpiosb 2 GPIO_ACTIVE_LOW>;
+		spi-max-frequency = <10000000>;
+		spi-cpol;
+		spi-cpha;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		interrupt-parent = <&gpiosb>;
+		interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+		status = "okay";
+
+		moxtet_sfp: gpio@0 {
+			compatible = "cznic,moxtet-gpio";
+			gpio-controller;
+			#gpio-cells = <2>;
+			reg = <0>;
+			status = "disabled";
+		};
+	};
+};
+
+&usb2 {
+	status = "okay";
+};
+
+&usb3 {
+	status = "okay";
+	phys = <&comphy2 0>;
+	usb-phy = <&usb3_phy>;
+};
+
+&mdio {
+	pinctrl-names = "default";
+	pinctrl-0 = <&smi_pins>;
+	status = "okay";
+
+	phy1: ethernet-phy@1 {
+		reg = <1>;
+	};
+
+	/* switch nodes are enabled by U-Boot if modules are present */
+	switch0@10 {
+		compatible = "marvell,mv88e6190";
+		reg = <0x10 0>;
+		dsa,member = <0 0>;
+		interrupt-parent = <&moxtet>;
+		interrupts = <MOXTET_IRQ_PERIDOT(0)>;
+		status = "disabled";
+
+		mdio {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			switch0phy1: switch0phy1@1 {
+				reg = <0x1>;
+			};
+
+			switch0phy2: switch0phy2@2 {
+				reg = <0x2>;
+			};
+
+			switch0phy3: switch0phy3@3 {
+				reg = <0x3>;
+			};
+
+			switch0phy4: switch0phy4@4 {
+				reg = <0x4>;
+			};
+
+			switch0phy5: switch0phy5@5 {
+				reg = <0x5>;
+			};
+
+			switch0phy6: switch0phy6@6 {
+				reg = <0x6>;
+			};
+
+			switch0phy7: switch0phy7@7 {
+				reg = <0x7>;
+			};
+
+			switch0phy8: switch0phy8@8 {
+				reg = <0x8>;
+			};
+		};
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@1 {
+				reg = <0x1>;
+				label = "lan1";
+				phy-handle = <&switch0phy1>;
+			};
+
+			port@2 {
+				reg = <0x2>;
+				label = "lan2";
+				phy-handle = <&switch0phy2>;
+			};
+
+			port@3 {
+				reg = <0x3>;
+				label = "lan3";
+				phy-handle = <&switch0phy3>;
+			};
+
+			port@4 {
+				reg = <0x4>;
+				label = "lan4";
+				phy-handle = <&switch0phy4>;
+			};
+
+			port@5 {
+				reg = <0x5>;
+				label = "lan5";
+				phy-handle = <&switch0phy5>;
+			};
+
+			port@6 {
+				reg = <0x6>;
+				label = "lan6";
+				phy-handle = <&switch0phy6>;
+			};
+
+			port@7 {
+				reg = <0x7>;
+				label = "lan7";
+				phy-handle = <&switch0phy7>;
+			};
+
+			port@8 {
+				reg = <0x8>;
+				label = "lan8";
+				phy-handle = <&switch0phy8>;
+			};
+
+			port@9 {
+				reg = <0x9>;
+				label = "cpu";
+				ethernet = <&eth1>;
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+			};
+
+			switch0port10: port@a {
+				reg = <0xa>;
+				label = "dsa";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				link = <&switch1port9 &switch2port9>;
+				status = "disabled";
+			};
+
+			port-sfp@a {
+				reg = <0xa>;
+				label = "sfp";
+				sfp = <&sfp>;
+				phy-mode = "sgmii";
+				managed = "in-band-status";
+				status = "disabled";
+			};
+		};
+	};
+
+	switch0@2 {
+		compatible = "marvell,mv88e6085";
+		reg = <0x2 0>;
+		dsa,member = <0 0>;
+		interrupt-parent = <&moxtet>;
+		interrupts = <MOXTET_IRQ_TOPAZ>;
+		status = "disabled";
+
+		mdio {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			switch0phy1_topaz: switch0phy1@11 {
+				reg = <0x11>;
+			};
+
+			switch0phy2_topaz: switch0phy2@12 {
+				reg = <0x12>;
+			};
+
+			switch0phy3_topaz: switch0phy3@13 {
+				reg = <0x13>;
+			};
+
+			switch0phy4_topaz: switch0phy4@14 {
+				reg = <0x14>;
+			};
+		};
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@1 {
+				reg = <0x1>;
+				label = "lan1";
+				phy-handle = <&switch0phy1_topaz>;
+			};
+
+			port@2 {
+				reg = <0x2>;
+				label = "lan2";
+				phy-handle = <&switch0phy2_topaz>;
+			};
+
+			port@3 {
+				reg = <0x3>;
+				label = "lan3";
+				phy-handle = <&switch0phy3_topaz>;
+			};
+
+			port@4 {
+				reg = <0x4>;
+				label = "lan4";
+				phy-handle = <&switch0phy4_topaz>;
+			};
+
+			port@5 {
+				reg = <0x5>;
+				label = "cpu";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				ethernet = <&eth1>;
+			};
+		};
+	};
+
+	switch1@11 {
+		compatible = "marvell,mv88e6190";
+		reg = <0x11 0>;
+		dsa,member = <0 1>;
+		interrupt-parent = <&moxtet>;
+		interrupts = <MOXTET_IRQ_PERIDOT(1)>;
+		status = "disabled";
+
+		mdio {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			switch1phy1: switch1phy1@1 {
+				reg = <0x1>;
+			};
+
+			switch1phy2: switch1phy2@2 {
+				reg = <0x2>;
+			};
+
+			switch1phy3: switch1phy3@3 {
+				reg = <0x3>;
+			};
+
+			switch1phy4: switch1phy4@4 {
+				reg = <0x4>;
+			};
+
+			switch1phy5: switch1phy5@5 {
+				reg = <0x5>;
+			};
+
+			switch1phy6: switch1phy6@6 {
+				reg = <0x6>;
+			};
+
+			switch1phy7: switch1phy7@7 {
+				reg = <0x7>;
+			};
+
+			switch1phy8: switch1phy8@8 {
+				reg = <0x8>;
+			};
+		};
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@1 {
+				reg = <0x1>;
+				label = "lan9";
+				phy-handle = <&switch1phy1>;
+			};
+
+			port@2 {
+				reg = <0x2>;
+				label = "lan10";
+				phy-handle = <&switch1phy2>;
+			};
+
+			port@3 {
+				reg = <0x3>;
+				label = "lan11";
+				phy-handle = <&switch1phy3>;
+			};
+
+			port@4 {
+				reg = <0x4>;
+				label = "lan12";
+				phy-handle = <&switch1phy4>;
+			};
+
+			port@5 {
+				reg = <0x5>;
+				label = "lan13";
+				phy-handle = <&switch1phy5>;
+			};
+
+			port@6 {
+				reg = <0x6>;
+				label = "lan14";
+				phy-handle = <&switch1phy6>;
+			};
+
+			port@7 {
+				reg = <0x7>;
+				label = "lan15";
+				phy-handle = <&switch1phy7>;
+			};
+
+			port@8 {
+				reg = <0x8>;
+				label = "lan16";
+				phy-handle = <&switch1phy8>;
+			};
+
+			switch1port9: port@9 {
+				reg = <0x9>;
+				label = "dsa";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				link = <&switch0port10>;
+			};
+
+			switch1port10: port@a {
+				reg = <0xa>;
+				label = "dsa";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				link = <&switch2port9>;
+				status = "disabled";
+			};
+
+			port-sfp@a {
+				reg = <0xa>;
+				label = "sfp";
+				sfp = <&sfp>;
+				phy-mode = "sgmii";
+				managed = "in-band-status";
+				status = "disabled";
+			};
+		};
+	};
+
+	switch1@2 {
+		compatible = "marvell,mv88e6085";
+		reg = <0x2 0>;
+		dsa,member = <0 1>;
+		interrupt-parent = <&moxtet>;
+		interrupts = <MOXTET_IRQ_TOPAZ>;
+		status = "disabled";
+
+		mdio {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			switch1phy1_topaz: switch1phy1@11 {
+				reg = <0x11>;
+			};
+
+			switch1phy2_topaz: switch1phy2@12 {
+				reg = <0x12>;
+			};
+
+			switch1phy3_topaz: switch1phy3@13 {
+				reg = <0x13>;
+			};
+
+			switch1phy4_topaz: switch1phy4@14 {
+				reg = <0x14>;
+			};
+		};
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@1 {
+				reg = <0x1>;
+				label = "lan9";
+				phy-handle = <&switch1phy1_topaz>;
+			};
+
+			port@2 {
+				reg = <0x2>;
+				label = "lan10";
+				phy-handle = <&switch1phy2_topaz>;
+			};
+
+			port@3 {
+				reg = <0x3>;
+				label = "lan11";
+				phy-handle = <&switch1phy3_topaz>;
+			};
+
+			port@4 {
+				reg = <0x4>;
+				label = "lan12";
+				phy-handle = <&switch1phy4_topaz>;
+			};
+
+			port@5 {
+				reg = <0x5>;
+				label = "dsa";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				link = <&switch0port10>;
+			};
+		};
+	};
+
+	switch2@12 {
+		compatible = "marvell,mv88e6190";
+		reg = <0x12 0>;
+		dsa,member = <0 2>;
+		interrupt-parent = <&moxtet>;
+		interrupts = <MOXTET_IRQ_PERIDOT(2)>;
+		status = "disabled";
+
+		mdio {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			switch2phy1: switch2phy1@1 {
+				reg = <0x1>;
+			};
+
+			switch2phy2: switch2phy2@2 {
+				reg = <0x2>;
+			};
+
+			switch2phy3: switch2phy3@3 {
+				reg = <0x3>;
+			};
+
+			switch2phy4: switch2phy4@4 {
+				reg = <0x4>;
+			};
+
+			switch2phy5: switch2phy5@5 {
+				reg = <0x5>;
+			};
+
+			switch2phy6: switch2phy6@6 {
+				reg = <0x6>;
+			};
+
+			switch2phy7: switch2phy7@7 {
+				reg = <0x7>;
+			};
+
+			switch2phy8: switch2phy8@8 {
+				reg = <0x8>;
+			};
+		};
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@1 {
+				reg = <0x1>;
+				label = "lan17";
+				phy-handle = <&switch2phy1>;
+			};
+
+			port@2 {
+				reg = <0x2>;
+				label = "lan18";
+				phy-handle = <&switch2phy2>;
+			};
+
+			port@3 {
+				reg = <0x3>;
+				label = "lan19";
+				phy-handle = <&switch2phy3>;
+			};
+
+			port@4 {
+				reg = <0x4>;
+				label = "lan20";
+				phy-handle = <&switch2phy4>;
+			};
+
+			port@5 {
+				reg = <0x5>;
+				label = "lan21";
+				phy-handle = <&switch2phy5>;
+			};
+
+			port@6 {
+				reg = <0x6>;
+				label = "lan22";
+				phy-handle = <&switch2phy6>;
+			};
+
+			port@7 {
+				reg = <0x7>;
+				label = "lan23";
+				phy-handle = <&switch2phy7>;
+			};
+
+			port@8 {
+				reg = <0x8>;
+				label = "lan24";
+				phy-handle = <&switch2phy8>;
+			};
+
+			switch2port9: port@9 {
+				reg = <0x9>;
+				label = "dsa";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				link = <&switch1port10 &switch0port10>;
+			};
+
+			port-sfp@a {
+				reg = <0xa>;
+				label = "sfp";
+				sfp = <&sfp>;
+				phy-mode = "sgmii";
+				managed = "in-band-status";
+				status = "disabled";
+			};
+		};
+	};
+
+	switch2@2 {
+		compatible = "marvell,mv88e6085";
+		reg = <0x2 0>;
+		dsa,member = <0 2>;
+		interrupt-parent = <&moxtet>;
+		interrupts = <MOXTET_IRQ_TOPAZ>;
+		status = "disabled";
+
+		mdio {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			switch2phy1_topaz: switch2phy1@11 {
+				reg = <0x11>;
+			};
+
+			switch2phy2_topaz: switch2phy2@12 {
+				reg = <0x12>;
+			};
+
+			switch2phy3_topaz: switch2phy3@13 {
+				reg = <0x13>;
+			};
+
+			switch2phy4_topaz: switch2phy4@14 {
+				reg = <0x14>;
+			};
+		};
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@1 {
+				reg = <0x1>;
+				label = "lan17";
+				phy-handle = <&switch2phy1_topaz>;
+			};
+
+			port@2 {
+				reg = <0x2>;
+				label = "lan18";
+				phy-handle = <&switch2phy2_topaz>;
+			};
+
+			port@3 {
+				reg = <0x3>;
+				label = "lan19";
+				phy-handle = <&switch2phy3_topaz>;
+			};
+
+			port@4 {
+				reg = <0x4>;
+				label = "lan20";
+				phy-handle = <&switch2phy4_topaz>;
+			};
+
+			port@5 {
+				reg = <0x5>;
+				label = "dsa";
+				phy-mode = "2500base-x";
+				managed = "in-band-status";
+				link = <&switch1port10 &switch0port10>;
+			};
+		};
+	};
+};