0001 // SPDX-License-Identifier: ISC
0002 /*
0003 * Device Tree file for ADI Engineering Coyote platform.
0004 * Derived from boardfiles written by MontaVista software.
0005 * Ethernet set-up from OpenWrt.
0006 */
0007
0008 /dts-v1/;
0009
0010 #include "intel-ixp42x.dtsi"
0011 #include <dt-bindings/input/input.h>
0012
0013 / {
0014 model = "ADI Engineering Coyote reference design";
0015 compatible = "adieng,coyote", "intel,ixp42x";
0016 #address-cells = <1>;
0017 #size-cells = <1>;
0018
0019 memory@0 {
0020 /* CHECKME: 16 MB SDRAM minimum, maybe the Coyote actually has more */
0021 device_type = "memory";
0022 reg = <0x00000000 0x01000000>;
0023 };
0024
0025 chosen {
0026 bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
0027 stdout-path = "uart1:115200n8";
0028 };
0029
0030 aliases {
0031 /* These are switched around */
0032 serial0 = &uart1;
0033 serial1 = &uart0;
0034 };
0035
0036 soc {
0037 bus@c4000000 {
0038 flash@0,0 {
0039 compatible = "intel,ixp4xx-flash", "cfi-flash";
0040 bank-width = <2>;
0041 /*
0042 * 32 MB of Flash in 128 0x20000 sized blocks
0043 * mapped in at CS0 and CS1
0044 */
0045 reg = <0 0x00000000 0x2000000>;
0046
0047 /* Configure expansion bus to allow writes */
0048 intel,ixp4xx-eb-write-enable = <1>;
0049
0050 partitions {
0051 compatible = "redboot-fis";
0052 /* CHECKME: guess this is Redboot FIS */
0053 fis-index-block = <0x1ff>;
0054 };
0055 };
0056 };
0057
0058 pci@c0000000 {
0059 status = "ok";
0060
0061 /*
0062 * Taken from Coyote PCI boardfile.
0063 * We have slots (IDSEL) 1 and 2 with one assigned IRQ
0064 * each handling all IRQs.
0065 */
0066 #interrupt-cells = <1>;
0067 interrupt-map-mask = <0xf800 0 0 7>;
0068 interrupt-map =
0069 /* IDSEL 1 */
0070 <0x0800 0 0 1 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 6 */
0071 <0x0800 0 0 2 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 1 is irq 6 */
0072 <0x0800 0 0 3 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 1 is irq 6 */
0073 <0x0800 0 0 4 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 1 is irq 6 */
0074 /* IDSEL 2 */
0075 <0x1000 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 11 */
0076 <0x1000 0 0 2 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 2 is irq 11 */
0077 <0x1000 0 0 3 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 2 is irq 11 */
0078 <0x1000 0 0 4 &gpio0 11 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 2 is irq 11 */
0079 };
0080
0081 /* EthB */
0082 ethernet@c8009000 {
0083 status = "ok";
0084 queue-rx = <&qmgr 3>;
0085 queue-txready = <&qmgr 20>;
0086 phy-mode = "rgmii";
0087 phy-handle = <&phy5>;
0088
0089 mdio {
0090 #address-cells = <1>;
0091 #size-cells = <0>;
0092
0093 phy4: ethernet-phy@4 {
0094 reg = <4>;
0095 };
0096
0097 phy5: ethernet-phy@5 {
0098 reg = <5>;
0099 };
0100 };
0101 };
0102
0103 /* EthC */
0104 ethernet@c800a000 {
0105 status = "ok";
0106 queue-rx = <&qmgr 4>;
0107 queue-txready = <&qmgr 21>;
0108 phy-mode = "rgmii";
0109 phy-handle = <&phy4>;
0110 };
0111 };
0112 };
