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126 lines
3.0 KiB
126 lines
3.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com) |
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*/ |
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/* |
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* Device tree for AXC001 770D/EM6/AS221 CPU card |
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* Note that this file only supports the 770D CPU |
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*/ |
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/include/ "skeleton.dtsi" |
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/ { |
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compatible = "snps,arc"; |
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#address-cells = <2>; |
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#size-cells = <2>; |
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cpu_card { |
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compatible = "simple-bus"; |
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#address-cells = <1>; |
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#size-cells = <1>; |
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ranges = <0x00000000 0x0 0xf0000000 0x10000000>; |
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core_clk: core_clk { |
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#clock-cells = <0>; |
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compatible = "fixed-clock"; |
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clock-frequency = <750000000>; |
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}; |
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input_clk: input-clk { |
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#clock-cells = <0>; |
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compatible = "fixed-clock"; |
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clock-frequency = <33333333>; |
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}; |
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core_intc: arc700-intc@cpu { |
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compatible = "snps,arc700-intc"; |
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interrupt-controller; |
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#interrupt-cells = <1>; |
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}; |
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/* |
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* this GPIO block ORs all interrupts on CPU card (creg,..) |
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* to uplink only 1 IRQ to ARC core intc |
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*/ |
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dw-apb-gpio@2000 { |
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compatible = "snps,dw-apb-gpio"; |
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reg = < 0x2000 0x80 >; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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ictl_intc: gpio-controller@0 { |
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compatible = "snps,dw-apb-gpio-port"; |
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gpio-controller; |
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#gpio-cells = <2>; |
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snps,nr-gpios = <30>; |
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reg = <0>; |
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interrupt-controller; |
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#interrupt-cells = <2>; |
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interrupt-parent = <&core_intc>; |
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interrupts = <15>; |
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}; |
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}; |
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debug_uart: dw-apb-uart@5000 { |
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compatible = "snps,dw-apb-uart"; |
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reg = <0x5000 0x100>; |
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clock-frequency = <33333000>; |
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interrupt-parent = <&ictl_intc>; |
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interrupts = <19 4>; |
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baud = <115200>; |
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reg-shift = <2>; |
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reg-io-width = <4>; |
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}; |
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arcpct0: pct { |
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compatible = "snps,arc700-pct"; |
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}; |
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}; |
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/* |
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* This INTC is actually connected to DW APB GPIO |
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* which acts as a wire between MB INTC and CPU INTC. |
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* GPIO INTC is configured in platform init code |
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* and here we mimic direct connection from MB INTC to |
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* CPU INTC, thus we set "interrupts = <7>" instead of |
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* "interrupts = <12>" |
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* |
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* This intc actually resides on MB, but we move it here to |
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* avoid duplicating the MB dtsi file given that IRQ from |
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* this intc to cpu intc are different for axs101 and axs103 |
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*/ |
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mb_intc: interrupt-controller@e0012000 { |
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#interrupt-cells = <1>; |
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compatible = "snps,dw-apb-ictl"; |
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reg = < 0x0 0xe0012000 0x0 0x200 >; |
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interrupt-controller; |
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interrupt-parent = <&core_intc>; |
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interrupts = < 7 >; |
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}; |
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memory { |
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device_type = "memory"; |
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/* CONFIG_LINUX_RAM_BASE needs to match low mem start */ |
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reg = <0x0 0x80000000 0x0 0x1b000000>; /* (512 - 32) MiB */ |
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}; |
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reserved-memory { |
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#address-cells = <2>; |
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#size-cells = <2>; |
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ranges; |
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/* |
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* We just move frame buffer area to the very end of |
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* available DDR. And even though in case of ARC770 there's |
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* no strict requirement for a frame-buffer to be in any |
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* particular location it allows us to use the same |
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* base board's DT node for ARC PGU as for ARc HS38. |
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*/ |
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frame_buffer: frame_buffer@9e000000 { |
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compatible = "shared-dma-pool"; |
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reg = <0x0 0x9e000000 0x0 0x2000000>; |
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no-map; |
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}; |
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}; |
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};
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