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/include/ "skeleton_hs.dtsi" 14 15/ { 16 compatible = "snps,arc"; 17 #address-cells = <2>; 18 #size-cells = <2>; 19 20 cpu_card { 21 compatible = "simple-bus"; 22 #address-cells = <1>; 23 #size-cells = <1>; 24 25 ranges = <0x00000000 0x0 0xf0000000 0x10000000>; 26 27 input_clk: input-clk { 28 #clock-cells = <0>; 29 compatible = "fixed-clock"; 30 clock-frequency = <33333333>; 31 }; 32 33 core_clk: core-clk@80 { 34 compatible = "snps,axs10x-arc-pll-clock"; 35 reg = <0x80 0x10>, <0x100 0x10>; 36 #clock-cells = <0>; 37 clocks = <&input_clk>; 38 39 /* 40 * Set initial core pll output frequency to 90MHz. 41 * It will be applied at the core pll driver probing 42 * on early boot. 43 */ 44 assigned-clocks = <&core_clk>; 45 assigned-clock-rates = <90000000>; 46 }; 47 48 core_intc: archs-intc@cpu { 49 compatible = "snps,archs-intc"; 50 interrupt-controller; 51 #interrupt-cells = <1>; 52 }; 53 54 /* 55 * this GPIO block ORs all interrupts on CPU card (creg,..) 56 * to uplink only 1 IRQ to ARC core intc 57 */ 58 dw-apb-gpio@2000 { 59 compatible = "snps,dw-apb-gpio"; 60 reg = < 0x2000 0x80 >; 61 #address-cells = <1>; 62 #size-cells = <0>; 63 64 ictl_intc: gpio-controller@0 { 65 compatible = "snps,dw-apb-gpio-port"; 66 gpio-controller; 67 #gpio-cells = <2>; 68 snps,nr-gpios = <30>; 69 reg = <0>; 70 interrupt-controller; 71 #interrupt-cells = <2>; 72 interrupt-parent = <&core_intc>; 73 interrupts = <25>; 74 }; 75 }; 76 77 debug_uart: dw-apb-uart@5000 { 78 compatible = "snps,dw-apb-uart"; 79 reg = <0x5000 0x100>; 80 clock-frequency = <33333000>; 81 interrupt-parent = <&ictl_intc>; 82 interrupts = <2 4>; 83 baud = <115200>; 84 reg-shift = <2>; 85 reg-io-width = <4>; 86 }; 87 88 arcpct0: pct { 89 compatible = "snps,archs-pct"; 90 #interrupt-cells = <1>; 91 interrupt-parent = <&core_intc>; 92 interrupts = <20>; 93 }; 94 }; 95 96 /* 97 * Mark DMA peripherals connected via IOC port as dma-coherent. We do 98 * it via overlay because peripherals defined in axs10x_mb.dtsi are 99 * used for both AXS101 and AXS103 boards and only AXS103 has IOC (so 100 * only AXS103 board has HW-coherent DMA peripherals) 101 * We don't need to mark pgu@17000 as dma-coherent because it uses 102 * external DMA buffer located outside of IOC aperture. 103 */ 104 axs10x_mb { 105 ethernet@18000 { 106 dma-coherent; 107 }; 108 109 ehci@40000 { 110 dma-coherent; 111 }; 112 113 ohci@60000 { 114 dma-coherent; 115 }; 116 117 mmc@15000 { 118 dma-coherent; 119 }; 120 }; 121 122 /* 123 * The DW APB ICTL intc on MB is connected to CPU intc via a 124 * DT "invisible" DW APB GPIO block, configured to simply pass thru 125 * interrupts - setup accordinly in platform init (plat-axs10x/ax10x.c) 126 * 127 * So here we mimic a direct connection betwen them, ignoring the 128 * ABPG GPIO. Thus set "interrupts = <24>" (DW APB GPIO to core) 129 * instead of "interrupts = <12>" (DW APB ICTL to DW APB GPIO) 130 * 131 * This intc actually resides on MB, but we move it here to 132 * avoid duplicating the MB dtsi file given that IRQ from 133 * this intc to cpu intc are different for axs101 and axs103 134 */ 135 mb_intc: dw-apb-ictl@e0012000 { 136 #interrupt-cells = <1>; 137 compatible = "snps,dw-apb-ictl"; 138 reg = < 0x0 0xe0012000 0x0 0x200 >; 139 interrupt-controller; 140 interrupt-parent = <&core_intc>; 141 interrupts = < 24 >; 142 }; 143 144 memory { 145 device_type = "memory"; 146 /* CONFIG_LINUX_RAM_BASE needs to match low mem start */ 147 reg = <0x0 0x80000000 0x0 0x20000000 /* 512 MiB low mem */ 148 0x1 0xc0000000 0x0 0x40000000>; /* 1 GiB highmem */ 149 }; 150 151 reserved-memory { 152 #address-cells = <2>; 153 #size-cells = <2>; 154 ranges; 155 /* 156 * Move frame buffer out of IOC aperture (0x8z-0xaz). 157 */ 158 frame_buffer: frame_buffer@be000000 { 159 compatible = "shared-dma-pool"; 160 reg = <0x0 0xbe000000 0x0 0x2000000>; 161 no-map; 162 }; 163 }; 164}; 165