1/* 2 * Copyright (C) 2014-15 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 AXC003 CPU card: HS38x UP configuration 11 */ 12 13/ { 14 compatible = "snps,arc"; 15 clock-frequency = <90000000>; 16 #address-cells = <1>; 17 #size-cells = <1>; 18 19 cpu_card { 20 compatible = "simple-bus"; 21 #address-cells = <1>; 22 #size-cells = <1>; 23 24 ranges = <0x00000000 0xf0000000 0x10000000>; 25 26 cpu_intc: archs-intc@cpu { 27 compatible = "snps,archs-intc"; 28 interrupt-controller; 29 #interrupt-cells = <1>; 30 }; 31 32 /* 33 * this GPIO block ORs all interrupts on CPU card (creg,..) 34 * to uplink only 1 IRQ to ARC core intc 35 */ 36 dw-apb-gpio@0x2000 { 37 compatible = "snps,dw-apb-gpio"; 38 reg = < 0x2000 0x80 >; 39 #address-cells = <1>; 40 #size-cells = <0>; 41 42 ictl_intc: gpio-controller@0 { 43 compatible = "snps,dw-apb-gpio-port"; 44 gpio-controller; 45 #gpio-cells = <2>; 46 snps,nr-gpios = <30>; 47 reg = <0>; 48 interrupt-controller; 49 #interrupt-cells = <2>; 50 interrupt-parent = <&cpu_intc>; 51 interrupts = <25>; 52 }; 53 }; 54 55 debug_uart: dw-apb-uart@0x5000 { 56 compatible = "snps,dw-apb-uart"; 57 reg = <0x5000 0x100>; 58 clock-frequency = <33333000>; 59 interrupt-parent = <&ictl_intc>; 60 interrupts = <2 4>; 61 baud = <115200>; 62 reg-shift = <2>; 63 reg-io-width = <4>; 64 }; 65 66 arcpct0: pct { 67 compatible = "snps,archs-pct"; 68 #interrupt-cells = <1>; 69 interrupt-parent = <&cpu_intc>; 70 interrupts = <20>; 71 }; 72 }; 73 74 /* 75 * The DW APB ICTL intc on MB is connected to CPU intc via a 76 * DT "invisible" DW APB GPIO block, configured to simply pass thru 77 * interrupts - setup accordinly in platform init (plat-axs10x/ax10x.c) 78 * 79 * So here we mimic a direct connection betwen them, ignoring the 80 * ABPG GPIO. Thus set "interrupts = <24>" (DW APB GPIO to core) 81 * instead of "interrupts = <12>" (DW APB ICTL to DW APB GPIO) 82 * 83 * This intc actually resides on MB, but we move it here to 84 * avoid duplicating the MB dtsi file given that IRQ from 85 * this intc to cpu intc are different for axs101 and axs103 86 */ 87 mb_intc: dw-apb-ictl@0xe0012000 { 88 #interrupt-cells = <1>; 89 compatible = "snps,dw-apb-ictl"; 90 reg = < 0xe0012000 0x200 >; 91 interrupt-controller; 92 interrupt-parent = <&cpu_intc>; 93 interrupts = < 24 >; 94 }; 95 96 memory { 97 #address-cells = <1>; 98 #size-cells = <1>; 99 ranges = <0x00000000 0x80000000 0x40000000>; 100 device_type = "memory"; 101 reg = <0x80000000 0x20000000>; /* 512MiB */ 102 }; 103}; 104