From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/arc/boot/dts/axc001.dtsi | 126 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 arch/arc/boot/dts/axc001.dtsi (limited to 'arch/arc/boot/dts/axc001.dtsi') diff --git a/arch/arc/boot/dts/axc001.dtsi b/arch/arc/boot/dts/axc001.dtsi new file mode 100644 index 000000000..2a151607b --- /dev/null +++ b/arch/arc/boot/dts/axc001.dtsi @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com) + */ + +/* + * 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>; + }; + + input_clk: input-clk { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <33333333>; + }; + + 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: interrupt-controller@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; + }; + }; +}; -- cgit v1.2.3