1/* 2 * Copyright (C) 2017 Synopsys, Inc. (www.synopsys.com) 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9/* 10 * Device Tree for ARC HS Development Kit 11 */ 12/dts-v1/; 13 14#include <dt-bindings/net/ti-dp83867.h> 15#include <dt-bindings/reset/snps,hsdk-reset.h> 16 17/ { 18 model = "snps,hsdk"; 19 compatible = "snps,hsdk"; 20 21 #address-cells = <1>; 22 #size-cells = <1>; 23 24 chosen { 25 bootargs = "earlycon=uart8250,mmio32,0xf0005000,115200n8 console=ttyS0,115200n8 debug print-fatal-signals=1"; 26 }; 27 28 cpus { 29 #address-cells = <1>; 30 #size-cells = <0>; 31 32 cpu@0 { 33 device_type = "cpu"; 34 compatible = "snps,archs38"; 35 reg = <0>; 36 clocks = <&core_clk>; 37 }; 38 39 cpu@1 { 40 device_type = "cpu"; 41 compatible = "snps,archs38"; 42 reg = <1>; 43 clocks = <&core_clk>; 44 }; 45 46 cpu@2 { 47 device_type = "cpu"; 48 compatible = "snps,archs38"; 49 reg = <2>; 50 clocks = <&core_clk>; 51 }; 52 53 cpu@3 { 54 device_type = "cpu"; 55 compatible = "snps,archs38"; 56 reg = <3>; 57 clocks = <&core_clk>; 58 }; 59 }; 60 61 input_clk: input-clk { 62 #clock-cells = <0>; 63 compatible = "fixed-clock"; 64 clock-frequency = <33333333>; 65 }; 66 67 cpu_intc: cpu-interrupt-controller { 68 compatible = "snps,archs-intc"; 69 interrupt-controller; 70 #interrupt-cells = <1>; 71 }; 72 73 idu_intc: idu-interrupt-controller { 74 compatible = "snps,archs-idu-intc"; 75 interrupt-controller; 76 #interrupt-cells = <1>; 77 interrupt-parent = <&cpu_intc>; 78 }; 79 80 arcpct: pct { 81 compatible = "snps,archs-pct"; 82 }; 83 84 /* TIMER0 with interrupt for clockevent */ 85 timer { 86 compatible = "snps,arc-timer"; 87 interrupts = <16>; 88 interrupt-parent = <&cpu_intc>; 89 clocks = <&core_clk>; 90 }; 91 92 /* 64-bit Global Free Running Counter */ 93 gfrc { 94 compatible = "snps,archs-timer-gfrc"; 95 clocks = <&core_clk>; 96 }; 97 98 soc { 99 compatible = "simple-bus"; 100 #address-cells = <1>; 101 #size-cells = <1>; 102 interrupt-parent = <&idu_intc>; 103 104 ranges = <0x00000000 0xf0000000 0x10000000>; 105 106 cgu_rst: reset-controller@8a0 { 107 compatible = "snps,hsdk-reset"; 108 #reset-cells = <1>; 109 reg = <0x8A0 0x4>, <0xFF0 0x4>; 110 }; 111 112 core_clk: core-clk@0 { 113 compatible = "snps,hsdk-core-pll-clock"; 114 reg = <0x00 0x10>, <0x14B8 0x4>; 115 #clock-cells = <0>; 116 clocks = <&input_clk>; 117 }; 118 119 serial: serial@5000 { 120 compatible = "snps,dw-apb-uart"; 121 reg = <0x5000 0x100>; 122 clock-frequency = <33330000>; 123 interrupts = <6>; 124 baud = <115200>; 125 reg-shift = <2>; 126 reg-io-width = <4>; 127 }; 128 129 gmacclk: gmacclk { 130 compatible = "fixed-clock"; 131 clock-frequency = <400000000>; 132 #clock-cells = <0>; 133 }; 134 135 mmcclk_ciu: mmcclk-ciu { 136 compatible = "fixed-clock"; 137 /* 138 * DW sdio controller has external ciu clock divider 139 * controlled via register in SDIO IP. Due to its 140 * unexpected default value (it should divide by 1 141 * but it divides by 8) SDIO IP uses wrong clock and 142 * works unstable (see STAR 9001204800) 143 * We switched to the minimum possible value of the 144 * divisor (div-by-2) in HSDK platform code. 145 * So add temporary fix and change clock frequency 146 * to 50000000 Hz until we fix dw sdio driver itself. 147 */ 148 clock-frequency = <50000000>; 149 #clock-cells = <0>; 150 }; 151 152 mmcclk_biu: mmcclk-biu { 153 compatible = "fixed-clock"; 154 clock-frequency = <400000000>; 155 #clock-cells = <0>; 156 }; 157 158 ethernet@8000 { 159 #interrupt-cells = <1>; 160 compatible = "snps,dwmac"; 161 reg = <0x8000 0x2000>; 162 interrupts = <10>; 163 interrupt-names = "macirq"; 164 phy-mode = "rgmii"; 165 snps,pbl = <32>; 166 snps,multicast-filter-bins = <256>; 167 clocks = <&gmacclk>; 168 clock-names = "stmmaceth"; 169 phy-handle = <&phy0>; 170 resets = <&cgu_rst HSDK_ETH_RESET>; 171 reset-names = "stmmaceth"; 172 173 tx-fifo-depth = <4096>; 174 rx-fifo-depth = <4096>; 175 176 mdio { 177 #address-cells = <1>; 178 #size-cells = <0>; 179 compatible = "snps,dwmac-mdio"; 180 phy0: ethernet-phy@0 { 181 reg = <0>; 182 ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>; 183 ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>; 184 ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>; 185 }; 186 }; 187 }; 188 189 ohci@60000 { 190 compatible = "snps,hsdk-v1.0-ohci", "generic-ohci"; 191 reg = <0x60000 0x100>; 192 interrupts = <15>; 193 }; 194 195 ehci@40000 { 196 compatible = "snps,hsdk-v1.0-ehci", "generic-ehci"; 197 reg = <0x40000 0x100>; 198 interrupts = <15>; 199 }; 200 201 mmc@a000 { 202 compatible = "altr,socfpga-dw-mshc"; 203 reg = <0xa000 0x400>; 204 num-slots = <1>; 205 fifo-depth = <16>; 206 card-detect-delay = <200>; 207 clocks = <&mmcclk_biu>, <&mmcclk_ciu>; 208 clock-names = "biu", "ciu"; 209 interrupts = <12>; 210 bus-width = <4>; 211 }; 212 }; 213 214 memory@80000000 { 215 #address-cells = <1>; 216 #size-cells = <1>; 217 device_type = "memory"; 218 reg = <0x80000000 0x40000000>; /* 1 GiB */ 219 }; 220}; 221