0001 // SPDX-License-Identifier: ISC
0002 /*
0003 * Device Tree include file for Intel reference designs for the
0004 * XScale Network Processors in the IXP 4xx series. Common device
0005 * set-up for IXDP425, IXCDP1100, KIXRP435 and IXDP465.
0006 */
0007
0008 / {
0009 memory@0 {
0010 /*
0011 * The board supports up to 256 MB of memory. Here we put in
0012 * 64 MB and this may be modified by the boot loader.
0013 */
0014 device_type = "memory";
0015 reg = <0x00000000 0x4000000>;
0016 };
0017
0018 chosen {
0019 bootargs = "console=ttyS0,115200n8";
0020 stdout-path = "uart0:115200n8";
0021 };
0022
0023 aliases {
0024 serial0 = &uart0;
0025 };
0026
0027 i2c {
0028 compatible = "i2c-gpio";
0029 sda-gpios = <&gpio0 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
0030 scl-gpios = <&gpio0 6 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
0031 #address-cells = <1>;
0032 #size-cells = <0>;
0033
0034 eeprom@50 {
0035 /*
0036 * Philips PCF8582C-2T/03 512byte I2C EEPROM
0037 * should behave like an Atmel 24c04.
0038 */
0039 compatible = "atmel,24c04";
0040 reg = <0x50>;
0041 pagesize = <16>;
0042 size = <512>;
0043 read-only;
0044 };
0045 };
0046
0047 soc {
0048 bus@c4000000 {
0049 /* Flash memory defined per-variant */
0050 nand-controller@3,0 {
0051 /* Some designs have a NAND on CS3 enable it here if present */
0052 status = "disabled";
0053
0054 /*
0055 * gen_nand needs to be extended and documented to get
0056 * command byte = 1 and address byte = 2 from the device
0057 * tree.
0058 */
0059 compatible = "gen_nand";
0060
0061 /* Expansion bus set-up */
0062 intel,ixp4xx-eb-t1 = <0>;
0063 intel,ixp4xx-eb-t2 = <0>;
0064 intel,ixp4xx-eb-t3 = <1>; // 1 cycle extra strobe phase
0065 intel,ixp4xx-eb-t4 = <0>;
0066 intel,ixp4xx-eb-t5 = <0>;
0067 intel,ixp4xx-eb-cycle-type = <0>; // Intel cycle type
0068 intel,ixp4xx-eb-byte-access-on-halfword = <0>;
0069 intel,ixp4xx-eb-mux-address-and-data = <0>;
0070 intel,ixp4xx-eb-ahb-split-transfers = <0>;
0071 intel,ixp4xx-eb-write-enable = <1>;
0072 intel,ixp4xx-eb-byte-access = <1>;
0073
0074 /* 512 bytes memory window */
0075 reg = <3 0x00000000 0x200>;
0076 nand-on-flash-bbt;
0077 nand-ecc-mode = "soft_bch";
0078 nand-ecc-step-size = <512>;
0079 nand-ecc-strength = <4>;
0080 nce-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>; /* NCE */
0081
0082 label = "ixp400 NAND";
0083
0084 partitions {
0085 compatible = "fixed-partitions";
0086 #address-cells = <1>;
0087 #size-cells = <1>;
0088
0089 fs@0 {
0090 label = "ixp400 NAND FS 0";
0091 reg = <0x0 0x800000>;
0092 };
0093 fs@800000 {
0094 label = "ixp400 NAND FS 1";
0095 reg = <0x800000 0x0>;
0096 };
0097 };
0098 };
0099 };
0100
0101 pci@c0000000 {
0102 status = "ok";
0103
0104 /*
0105 * Taken from IXDP425 PCI boardfile.
0106 * PCI slots on the BIXMB425BD base card.
0107 * We have up to 4 slots (IDSEL) with 4 swizzled IRQs.
0108 */
0109 #interrupt-cells = <1>;
0110 interrupt-map-mask = <0xf800 0 0 7>;
0111 interrupt-map =
0112 /* IDSEL 1 */
0113 <0x0800 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 11 */
0114 <0x0800 0 0 2 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 1 is irq 10 */
0115 <0x0800 0 0 3 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 1 is irq 9 */
0116 <0x0800 0 0 4 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 1 is irq 8 */
0117 /* IDSEL 2 */
0118 <0x1000 0 0 1 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 10 */
0119 <0x1000 0 0 2 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 2 is irq 9 */
0120 <0x1000 0 0 3 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 2 is irq 8 */
0121 <0x1000 0 0 4 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 2 is irq 11 */
0122 /* IDSEL 3 */
0123 <0x1800 0 0 1 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 3 is irq 9 */
0124 <0x1800 0 0 2 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 3 is irq 8 */
0125 <0x1800 0 0 3 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 3 is irq 11 */
0126 <0x1800 0 0 4 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 3 is irq 10 */
0127 /* IDSEL 4 */
0128 <0x2000 0 0 1 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 4 is irq 8 */
0129 <0x2000 0 0 2 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 4 is irq 11 */
0130 <0x2000 0 0 3 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 4 is irq 10 */
0131 <0x2000 0 0 4 &gpio0 9 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 4 is irq 9 */
0132 };
0133 };
0134 };
