arch/arc/boot/dts/hsdk.dts

   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                 interrupt-parent = <&cpu_intc>;
  83                 interrupts = <20>;
  84         };
  85
  86         /* TIMER0 with interrupt for clockevent */
  87         timer {
  88                 compatible = "snps,arc-timer";
  89                 interrupts = <16>;
  90                 interrupt-parent = <&cpu_intc>;
  91                 clocks = <&core_clk>;
  92         };
  93
  94         /* 64-bit Global Free Running Counter */
  95         gfrc {
  96                 compatible = "snps,archs-timer-gfrc";
  97                 clocks = <&core_clk>;
  98         };
  99
 100         soc {
 101                 compatible = "simple-bus";
 102                 #address-cells = <1>;
 103                 #size-cells = <1>;
 104                 interrupt-parent = <&idu_intc>;
 105
 106                 ranges = <0x00000000 0xf0000000 0x10000000>;
 107
 108                 cgu_rst: reset-controller@8a0 {
 109                         compatible = "snps,hsdk-reset";
 110                         #reset-cells = <1>;
 111                         reg = <0x8A0 0x4>, <0xFF0 0x4>;
 112                 };
 113
 114                 core_clk: core-clk@0 {
 115                         compatible = "snps,hsdk-core-pll-clock";
 116                         reg = <0x00 0x10>, <0x14B8 0x4>;
 117                         #clock-cells = <0>;
 118                         clocks = <&input_clk>;
 119                 };
 120
 121                 serial: serial@5000 {
 122                         compatible = "snps,dw-apb-uart";
 123                         reg = <0x5000 0x100>;
 124                         clock-frequency = <33330000>;
 125                         interrupts = <6>;
 126                         baud = <115200>;
 127                         reg-shift = <2>;
 128                         reg-io-width = <4>;
 129                 };
 130
 131                 gmacclk: gmacclk {
 132                         compatible = "fixed-clock";
 133                         clock-frequency = <400000000>;
 134                         #clock-cells = <0>;
 135                 };
 136
 137                 mmcclk_ciu: mmcclk-ciu {
 138                         compatible = "fixed-clock";
 139                         /*
 140                          * DW sdio controller has external ciu clock divider
 141                          * controlled via register in SDIO IP. Due to its
 142                          * unexpected default value (it should divide by 1
 143                          * but it divides by 8) SDIO IP uses wrong clock and
 144                          * works unstable (see STAR 9001204800)
 145                          * We switched to the minimum possible value of the
 146                          * divisor (div-by-2) in HSDK platform code.
 147                          * So add temporary fix and change clock frequency
 148                          * to 50000000 Hz until we fix dw sdio driver itself.
 149                          */
 150                         clock-frequency = <50000000>;
 151                         #clock-cells = <0>;
 152                 };
 153
 154                 mmcclk_biu: mmcclk-biu {
 155                         compatible = "fixed-clock";
 156                         clock-frequency = <400000000>;
 157                         #clock-cells = <0>;
 158                 };
 159
 160                 ethernet@8000 {
 161                         #interrupt-cells = <1>;
 162                         compatible = "snps,dwmac";
 163                         reg = <0x8000 0x2000>;
 164                         interrupts = <10>;
 165                         interrupt-names = "macirq";
 166                         phy-mode = "rgmii-id";
 167                         snps,pbl = <32>;
 168                         snps,multicast-filter-bins = <256>;
 169                         clocks = <&gmacclk>;
 170                         clock-names = "stmmaceth";
 171                         phy-handle = <&phy0>;
 172                         resets = <&cgu_rst HSDK_ETH_RESET>;
 173                         reset-names = "stmmaceth";
 174
 175                         tx-fifo-depth = <4096>;
 176                         rx-fifo-depth = <4096>;
 177
 178                         mdio {
 179                                 #address-cells = <1>;
 180                                 #size-cells = <0>;
 181                                 compatible = "snps,dwmac-mdio";
 182                                 phy0: ethernet-phy@0 { /* Micrel KSZ9031 */
 183                                         reg = <0>;
 184                                         ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
 185                                         ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
 186                                         ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
 187                                 };
 188                         };
 189                 };
 190
 191                 ohci@60000 {
 192                         compatible = "snps,hsdk-v1.0-ohci", "generic-ohci";
 193                         reg = <0x60000 0x100>;
 194                         interrupts = <15>;
 195                 };
 196
 197                 ehci@40000 {
 198                         compatible = "snps,hsdk-v1.0-ehci", "generic-ehci";
 199                         reg = <0x40000 0x100>;
 200                         interrupts = <15>;
 201                 };
 202
 203                 mmc@a000 {
 204                         compatible = "altr,socfpga-dw-mshc";
 205                         reg = <0xa000 0x400>;
 206                         num-slots = <1>;
 207                         fifo-depth = <16>;
 208                         card-detect-delay = <200>;
 209                         clocks = <&mmcclk_biu>, <&mmcclk_ciu>;
 210                         clock-names = "biu", "ciu";
 211                         interrupts = <12>;
 212                         bus-width = <4>;
 213                 };
 214         };
 215
 216         memory@80000000 {
 217                 #address-cells = <1>;
 218                 #size-cells = <1>;
 219                 device_type = "memory";
 220                 reg = <0x80000000 0x40000000>;  /* 1 GiB */
 221         };
 222 };