/* * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ /* * Device tree for AXC001 770D/EM6/AS221 CPU card * Note that this file only supports the 770D CPU */ /include/ "skeleton.dtsi" / { compatible = "snps,arc"; #address-cells = <2>; #size-cells = <2>; cpu_card { compatible = "simple-bus"; #address-cells = <1>; #size-cells = <1>; ranges = <0x00000000 0x0 0xf0000000 0x10000000>; core_clk: core_clk { #clock-cells = <0>; compatible = "fixed-clock"; clock-frequency = <750000000>; }; core_intc: arc700-intc@cpu { compatible = "snps,arc700-intc"; interrupt-controller; #interrupt-cells = <1>; }; /* * this GPIO block ORs all interrupts on CPU card (creg,..) * to uplink only 1 IRQ to ARC core intc */ dw-apb-gpio@2000 { compatible = "snps,dw-apb-gpio"; reg = < 0x2000 0x80 >; #address-cells = <1>; #size-cells = <0>; ictl_intc: gpio-controller@0 { compatible = "snps,dw-apb-gpio-port"; gpio-controller; #gpio-cells = <2>; snps,nr-gpios = <30>; reg = <0>; interrupt-controller; #interrupt-cells = <2>; interrupt-parent = <&core_intc>; interrupts = <15>; }; }; debug_uart: dw-apb-uart@5000 { compatible = "snps,dw-apb-uart"; reg = <0x5000 0x100>; clock-frequency = <33333000>; interrupt-parent = <&ictl_intc>; interrupts = <19 4>; baud = <115200>; reg-shift = <2>; reg-io-width = <4>; }; arcpct0: pct { compatible = "snps,arc700-pct"; }; }; /* * This INTC is actually connected to DW APB GPIO * which acts as a wire between MB INTC and CPU INTC. * GPIO INTC is configured in platform init code * and here we mimic direct connection from MB INTC to * CPU INTC, thus we set "interrupts = <7>" instead of * "interrupts = <12>" * * This intc actually resides on MB, but we move it here to * avoid duplicating the MB dtsi file given that IRQ from * this intc to cpu intc are different for axs101 and axs103 */ mb_intc: dw-apb-ictl@e0012000 { #interrupt-cells = <1>; compatible = "snps,dw-apb-ictl"; reg = < 0x0 0xe0012000 0x0 0x200 >; interrupt-controller; interrupt-parent = <&core_intc>; interrupts = < 7 >; }; memory { device_type = "memory"; /* CONFIG_LINUX_RAM_BASE needs to match low mem start */ reg = <0x0 0x80000000 0x0 0x1b000000>; /* (512 - 32) MiB */ }; reserved-memory { #address-cells = <2>; #size-cells = <2>; ranges; /* * We just move frame buffer area to the very end of * available DDR. And even though in case of ARC770 there's * no strict requirement for a frame-buffer to be in any * particular location it allows us to use the same * base board's DT node for ARC PGU as for ARc HS38. */ frame_buffer: frame_buffer@9e000000 { compatible = "shared-dma-pool"; reg = <0x0 0x9e000000 0x0 0x2000000>; no-map; }; }; };