1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) 4 */ 5 6/* 7 * Device tree for AXC003 CPU card: HS38x UP configuration 8 */ 9 10/include/ "skeleton_hs.dtsi" 11 12/ { 13 compatible = "snps,arc"; 14 #address-cells = <2>; 15 #size-cells = <2>; 16 17 cpu_card { 18 compatible = "simple-bus"; 19 #address-cells = <1>; 20 #size-cells = <1>; 21 22 ranges = <0x00000000 0x0 0xf0000000 0x10000000>; 23 24 input_clk: input-clk { 25 #clock-cells = <0>; 26 compatible = "fixed-clock"; 27 clock-frequency = <33333333>; 28 }; 29 30 core_clk: core-clk@80 { 31 compatible = "snps,axs10x-arc-pll-clock"; 32 reg = <0x80 0x10>, <0x100 0x10>; 33 #clock-cells = <0>; 34 clocks = <&input_clk>; 35 36 /* 37 * Set initial core pll output frequency to 90MHz. 38 * It will be applied at the core pll driver probing 39 * on early boot. 40 */ 41 assigned-clocks = <&core_clk>; 42 assigned-clock-rates = <90000000>; 43 }; 44 45 core_intc: archs-intc@cpu { 46 compatible = "snps,archs-intc"; 47 interrupt-controller; 48 #interrupt-cells = <1>; 49 }; 50 51 /* 52 * this GPIO block ORs all interrupts on CPU card (creg,..) 53 * to uplink only 1 IRQ to ARC core intc 54 */ 55 dw-apb-gpio@2000 { 56 compatible = "snps,dw-apb-gpio"; 57 reg = < 0x2000 0x80 >; 58 #address-cells = <1>; 59 #size-cells = <0>; 60 61 ictl_intc: gpio-controller@0 { 62 compatible = "snps,dw-apb-gpio-port"; 63 gpio-controller; 64 #gpio-cells = <2>; 65 snps,nr-gpios = <30>; 66 reg = <0>; 67 interrupt-controller; 68 #interrupt-cells = <2>; 69 interrupt-parent = <&core_intc>; 70 interrupts = <25>; 71 }; 72 }; 73 74 debug_uart: dw-apb-uart@5000 { 75 compatible = "snps,dw-apb-uart"; 76 reg = <0x5000 0x100>; 77 clock-frequency = <33333000>; 78 interrupt-parent = <&ictl_intc>; 79 interrupts = <2 4>; 80 baud = <115200>; 81 reg-shift = <2>; 82 reg-io-width = <4>; 83 }; 84 85 arcpct0: pct { 86 compatible = "snps,archs-pct"; 87 #interrupt-cells = <1>; 88 interrupt-parent = <&core_intc>; 89 interrupts = <20>; 90 }; 91 }; 92 93 /* 94 * Mark DMA peripherals connected via IOC port as dma-coherent. We do 95 * it via overlay because peripherals defined in axs10x_mb.dtsi are 96 * used for both AXS101 and AXS103 boards and only AXS103 has IOC (so 97 * only AXS103 board has HW-coherent DMA peripherals) 98 * We don't need to mark pgu@17000 as dma-coherent because it uses 99 * external DMA buffer located outside of IOC aperture. 100 */ 101 axs10x_mb { 102 ethernet@18000 { 103 dma-coherent; 104 }; 105 106 usb@40000 { 107 dma-coherent; 108 }; 109 110 usb@60000 { 111 dma-coherent; 112 }; 113 114 mmc@15000 { 115 dma-coherent; 116 }; 117 }; 118 119 /* 120 * The DW APB ICTL intc on MB is connected to CPU intc via a 121 * DT "invisible" DW APB GPIO block, configured to simply pass thru 122 * interrupts - setup accordinly in platform init (plat-axs10x/ax10x.c) 123 * 124 * So here we mimic a direct connection betwen them, ignoring the 125 * ABPG GPIO. Thus set "interrupts = <24>" (DW APB GPIO to core) 126 * instead of "interrupts = <12>" (DW APB ICTL to DW APB GPIO) 127 * 128 * This intc actually resides on MB, but we move it here to 129 * avoid duplicating the MB dtsi file given that IRQ from 130 * this intc to cpu intc are different for axs101 and axs103 131 */ 132 mb_intc: interrupt-controller@e0012000 { 133 #interrupt-cells = <1>; 134 compatible = "snps,dw-apb-ictl"; 135 reg = < 0x0 0xe0012000 0x0 0x200 >; 136 interrupt-controller; 137 interrupt-parent = <&core_intc>; 138 interrupts = < 24 >; 139 }; 140 141 memory { 142 device_type = "memory"; 143 /* CONFIG_LINUX_RAM_BASE needs to match low mem start */ 144 reg = <0x0 0x80000000 0x0 0x20000000 /* 512 MiB low mem */ 145 0x1 0xc0000000 0x0 0x40000000>; /* 1 GiB highmem */ 146 }; 147 148 reserved-memory { 149 #address-cells = <2>; 150 #size-cells = <2>; 151 ranges; 152 /* 153 * Move frame buffer out of IOC aperture (0x8z-0xaz). 154 */ 155 frame_buffer: frame_buffer@be000000 { 156 compatible = "shared-dma-pool"; 157 reg = <0x0 0xbe000000 0x0 0x2000000>; 158 no-map; 159 }; 160 }; 161}; 162