1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Device Tree file for Excito Bubba B3 4 * 5 * Copyright (C) 2013, Andrew Lunn <andrew@lunn.ch> 6 * 7 * 8 * Note: This requires a new'ish version of u-boot, which disables the 9 * L2 cache. If your B3 silently fails to boot, u-boot is probably too 10 * old. Either upgrade, or consider the following email: 11 * 12 * https://lists.debian.org/debian-arm/2012/08/msg00128.html 13 */ 14 15/dts-v1/; 16 17#include "kirkwood.dtsi" 18#include "kirkwood-6281.dtsi" 19 20/ { 21 model = "Excito B3"; 22 compatible = "excito,b3", "marvell,kirkwood-88f6281", "marvell,kirkwood"; 23 memory { /* 512 MB */ 24 device_type = "memory"; 25 reg = <0x00000000 0x20000000>; 26 }; 27 28 chosen { 29 bootargs = "console=ttyS0,115200n8 earlyprintk"; 30 stdout-path = &uart0; 31 }; 32 33 ocp@f1000000 { 34 pinctrl: pin-controller@10000 { 35 pmx_button_power: pmx-button-power { 36 marvell,pins = "mpp39"; 37 marvell,function = "gpio"; 38 }; 39 pmx_led_green: pmx-led-green { 40 marvell,pins = "mpp38"; 41 marvell,function = "gpio"; 42 }; 43 pmx_led_red: pmx-led-red { 44 marvell,pins = "mpp41"; 45 marvell,function = "gpio"; 46 }; 47 pmx_led_blue: pmx-led-blue { 48 marvell,pins = "mpp42"; 49 marvell,function = "gpio"; 50 }; 51 pmx_beeper: pmx-beeper { 52 marvell,pins = "mpp40"; 53 marvell,function = "gpio"; 54 }; 55 }; 56 57 spi@10600 { 58 status = "okay"; 59 60 m25p16@0 { 61 #address-cells = <1>; 62 #size-cells = <1>; 63 compatible = "st,m25p16", "jedec,spi-nor"; 64 reg = <0>; 65 spi-max-frequency = <40000000>; 66 mode = <0>; 67 68 partition@0 { 69 reg = <0x0 0xc0000>; 70 label = "u-boot"; 71 }; 72 73 partition@c0000 { 74 reg = <0xc0000 0x20000>; 75 label = "u-boot env"; 76 }; 77 78 partition@e0000 { 79 reg = <0xe0000 0x120000>; 80 label = "data"; 81 }; 82 }; 83 }; 84 85 i2c@11000 { 86 status = "okay"; 87 /* 88 * There is something on the bus at address 0x64. 89 * Not yet identified what it is, maybe the eeprom 90 * for the Atheros WiFi chip? 91 */ 92 }; 93 94 95 serial@12000 { 96 /* Internal on test pins, 3.3v TTL 97 * UART0_RX = Testpoint 65 98 * UART0_TX = Testpoint 66 99 * See the Excito Wiki for more details. 100 */ 101 status = "okay"; 102 }; 103 104 sata@80000 { 105 /* One internal, the second as eSATA */ 106 status = "okay"; 107 nr-ports = <2>; 108 }; 109 }; 110 111 gpio-leds { 112 /* 113 * There is one LED "port" on the front and the colours 114 * mix together giving some interesting combinations. 115 */ 116 compatible = "gpio-leds"; 117 pinctrl-0 = < &pmx_led_green &pmx_led_red 118 &pmx_led_blue >; 119 pinctrl-names = "default"; 120 121 programming_led { 122 label = "bubba3:green:programming"; 123 gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>; 124 default-state = "off"; 125 }; 126 127 error_led { 128 label = "bubba3:red:error"; 129 gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>; 130 }; 131 132 active_led { 133 label = "bubba3:blue:active"; 134 gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>; 135 }; 136 }; 137 138 gpio-keys { 139 compatible = "gpio-keys"; 140 pinctrl-0 = <&pmx_button_power>; 141 pinctrl-names = "default"; 142 143 power-button { 144 /* On the back */ 145 label = "Power Button"; 146 linux,code = <KEY_POWER>; 147 gpios = <&gpio1 7 GPIO_ACTIVE_LOW>; 148 }; 149 }; 150 151 beeper: beeper { 152 /* 4KHz Piezoelectric buzzer */ 153 compatible = "gpio-beeper"; 154 pinctrl-0 = <&pmx_beeper>; 155 pinctrl-names = "default"; 156 gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>; 157 }; 158}; 159 160&mdio { 161 status = "okay"; 162 163 ethphy0: ethernet-phy@8 { 164 device_type = "ethernet-phy"; 165 reg = <8>; 166 }; 167 168 ethphy1: ethernet-phy@24 { 169 device_type = "ethernet-phy"; 170 reg = <24>; 171 }; 172}; 173 174ð0 { 175 status = "okay"; 176 ethernet0-port@0 { 177 phy-handle = <ðphy0>; 178 }; 179}; 180 181ð1 { 182 status = "okay"; 183 ethernet1-port@0 { 184 phy-handle = <ðphy1>; 185 }; 186}; 187 188/* Wifi model has Atheros chipset on pcie port */ 189&pciec { 190 status = "okay"; 191}; 192 193&pcie0 { 194 status = "okay"; 195}; 196