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// SPDX-License-Identifier: ISC
/*
* Device Tree file for the Arcom/Eurotech Vulcan board.
* This board is a single board computer in the PC/104 form factor based on
* IXP425, and was released around 2005. It previously had the name "Mercury".
*/
/dts-v1/;
#include "intel-ixp42x.dtsi"
#include <dt-bindings/input/input.h>
/ {
model = "Arcom/Eurotech Vulcan";
compatible = "arcom,vulcan", "intel,ixp42x";
#address-cells = <1>;
#size-cells = <1>;
memory@0 {
device_type = "memory";
reg = <0x00000000 0x4000000>;
};
chosen {
/* CHECKME: using a harddrive at /dev/sda1 as rootfs by default */
bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootfstype=ext4 rootwait";
stdout-path = "uart0:115200n8";
};
aliases {
serial0 = &uart0;
};
onewire {
compatible = "w1-gpio";
gpios = <&gpio0 14 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
};
soc {
bus@c4000000 {
flash@0,0 {
compatible = "intel,ixp4xx-flash", "cfi-flash";
bank-width = <2>;
/*
* 32 MB of Flash in 0x20000 byte blocks
* mapped in at CS0 and CS1.
*
* The documentation mentions the existence
* of a 16MB version, which we conveniently
* ignore. Shout if you own one!
*/
reg = <0 0x00000000 0x2000000>;
/* Expansion bus settings */
intel,ixp4xx-eb-t3 = <3>;
intel,ixp4xx-eb-byte-access-on-halfword = <1>;
intel,ixp4xx-eb-write-enable = <1>;
partitions {
compatible = "redboot-fis";
fis-index-block = <0x1ff>;
};
};
sram@2,0 {
/* 256 KB SDRAM memory at CS2 */
compatible = "shared-dma-pool";
device_type = "memory";
reg = <2 0x00000000 0x40000>;
no-map;
/* Expansion bus settings */
intel,ixp4xx-eb-t3 = <1>;
intel,ixp4xx-eb-t4 = <2>;
intel,ixp4xx-eb-ahb-split-transfers = <1>;
intel,ixp4xx-eb-write-enable = <1>;
intel,ixp4xx-eb-byte-access = <1>;
};
serial@3,0 {
/*
* 8250-compatible Exar XR16L2551 2 x UART
*
* CHECKME: if special tweaks are needed, then fix the
* operating system to handle it.
*/
compatible = "exar,xr16l2551", "ns8250";
reg = <3 0x00000000 0x10>;
interrupt-parent = <&gpio0>;
interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
clock-frequency = <1843200>;
/* Expansion bus settings */
intel,ixp4xx-eb-t3 = <3>;
intel,ixp4xx-eb-cycle-type = <1>; /* Motorola cycles */
intel,ixp4xx-eb-write-enable = <1>;
intel,ixp4xx-eb-byte-access = <1>;
};
gpio1: gpio@4,0 {
/*
* MMIO GPIO in one byte
*/
compatible = "arcom,vulcan-gpio";
reg = <4 0x00000000 0x1>;
/* Expansion bus settings */
intel,ixp4xx-eb-write-enable = <1>;
intel,ixp4xx-eb-byte-access = <1>;
};
watchdog@5,0 {
compatible = "maxim,max6369";
reg = <5 0x00000000 0x1>;
/* Expansion bus settings */
intel,ixp4xx-eb-write-enable = <1>;
intel,ixp4xx-eb-byte-access = <1>;
};
};
pci@c0000000 {
status = "okay";
/*
* Taken from Vulcan PCI boardfile.
*
* We have 2 slots (IDSEL) 1 and 2 with one dedicated interrupt
* per slot. This interrupt is shared (OR:ed) by all four pins.
*/
#interrupt-cells = <1>;
interrupt-map-mask = <0xf800 0 0 7>;
interrupt-map =
/* IDSEL 1 */
<0x0800 0 0 1 &gpio0 2 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 2 */
<0x0800 0 0 2 &gpio0 2 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 1 is irq 2 */
<0x0800 0 0 3 &gpio0 2 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 1 is irq 2 */
<0x0800 0 0 4 &gpio0 2 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 1 is irq 2 */
/* IDSEL 2 */
<0x1000 0 0 1 &gpio0 3 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 3 */
<0x1000 0 0 2 &gpio0 3 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 2 is irq 3 */
<0x1000 0 0 3 &gpio0 3 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 2 is irq 3 */
<0x1000 0 0 4 &gpio0 3 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 2 is irq 3 */
};
/* EthB */
ethernet@c8009000 {
status = "okay";
queue-rx = <&qmgr 3>;
queue-txready = <&qmgr 20>;
phy-mode = "rgmii";
phy-handle = <&phy0>;
mdio {
#address-cells = <1>;
#size-cells = <0>;
phy0: ethernet-phy@0 {
reg = <0>;
};
phy1: ethernet-phy@1 {
reg = <1>;
};
};
};
/* EthC */
ethernet@c800a000 {
status = "okay";
queue-rx = <&qmgr 4>;
queue-txready = <&qmgr 21>;
phy-mode = "rgmii";
phy-handle = <&phy1>;
};
};
};
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