target/linux/arc770/dts/axc001.dtsi

   1 /*
   2  * Copyright (C) 2013-15 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 AXC001 770D/EM6/AS221 CPU card
  11  * Note that this file only supports the 770D CPU
  12  */
  13
  14 / {
  15         compatible = "snps,arc";
  16         clock-frequency = <750000000>;  /* 750 MHZ */
  17         #address-cells = <1>;
  18         #size-cells = <1>;
  19
  20         cpu_card {
  21                 compatible = "simple-bus";
  22                 #address-cells = <1>;
  23                 #size-cells = <1>;
  24
  25                 ranges = <0x00000000 0xf0000000 0x10000000>;
  26
  27                 cpu_intc: arc700-intc@cpu {
  28                         compatible = "snps,arc700-intc";
  29                         interrupt-controller;
  30                         #interrupt-cells = <1>;
  31                 };
  32
  33                 /*
  34                  * this GPIO block ORs all interrupts on CPU card (creg,..)
  35                  * to uplink only 1 IRQ to ARC core intc
  36                  */
  37                 dw-apb-gpio@0x2000 {
  38                         compatible = "snps,dw-apb-gpio";
  39                         reg = < 0x2000 0x80 >;
  40                         #address-cells = <1>;
  41                         #size-cells = <0>;
  42
  43                         ictl_intc: gpio-controller@0 {
  44                                 compatible = "snps,dw-apb-gpio-port";
  45                                 gpio-controller;
  46                                 #gpio-cells = <2>;
  47                                 snps,nr-gpios = <30>;
  48                                 reg = <0>;
  49                                 interrupt-controller;
  50                                 #interrupt-cells = <2>;
  51                                 interrupt-parent = <&cpu_intc>;
  52                                 interrupts = <15>;
  53                         };
  54                 };
  55
  56                 debug_uart: dw-apb-uart@0x5000 {
  57                         compatible = "snps,dw-apb-uart";
  58                         reg = <0x5000 0x100>;
  59                         clock-frequency = <33333000>;
  60                         interrupt-parent = <&ictl_intc>;
  61                         interrupts = <19 4>;
  62                         baud = <115200>;
  63                         reg-shift = <2>;
  64                         reg-io-width = <4>;
  65                 };
  66
  67                 arcpmu0: pmu {
  68                         compatible = "snps,arc700-pct";
  69                 };
  70         };
  71
  72         /*
  73          * This INTC is actually connected to DW APB GPIO
  74          * which acts as a wire between MB INTC and CPU INTC.
  75          * GPIO INTC is configured in platform init code
  76          * and here we mimic direct connection from MB INTC to
  77          * CPU INTC, thus we set "interrupts = <7>" instead of
  78          * "interrupts = <12>"
  79          *
  80          * This intc actually resides on MB, but we move it here to
  81          * avoid duplicating the MB dtsi file given that IRQ from
  82          * this intc to cpu intc are different for axs101 and axs103
  83          */
  84         mb_intc: dw-apb-ictl@0xe0012000 {
  85                 #interrupt-cells = <1>;
  86                 compatible = "snps,dw-apb-ictl";
  87                 reg = < 0xe0012000 0x200 >;
  88                 interrupt-controller;
  89                 interrupt-parent = <&cpu_intc>;
  90                 interrupts = < 7 >;
  91         };
  92
  93         memory {
  94                 #address-cells = <1>;
  95                 #size-cells = <1>;
  96                 ranges = <0x00000000 0x80000000 0x40000000>;
  97                 device_type = "memory";
  98                 reg = <0x80000000 0x20000000>;  /* 512MiB */
  99         };
 100 };