intel-ixp4xx-reference-design.dtsi

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    1 // SPDX-License-Identifier: ISC
    2 /*
    3  * Device Tree include file for Intel reference designs for the
    4  * XScale Network Processors in the IXP 4xx series. Common device
    5  * set-up for IXDP425, IXCDP1100, KIXRP435 and IXDP465.
    6  */
    7 
    8 / {
    9         memory@0 {
   10                 /*
   11                  * The board supports up to 256 MB of memory. Here we put in
   12                  * 64 MB and this may be modified by the boot loader.
   13                  */
   14                 device_type = "memory";
   15                 reg = <0x00000000 0x4000000>;
   16         };
   17 
   18         chosen {
   19                 bootargs = "console=ttyS0,115200n8";
   20                 stdout-path = "uart0:115200n8";
   21         };
   22 
   23         aliases {
   24                 serial0 = &uart0;
   25         };
   26 
   27         i2c {
   28                 compatible = "i2c-gpio";
   29                 sda-gpios = <&gpio0 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
   30                 scl-gpios = <&gpio0 6 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
   31                 #address-cells = <1>;
   32                 #size-cells = <0>;
   33 
   34                 eeprom@50 {
   35                         /*
   36                          * Philips PCF8582C-2T/03 512byte I2C EEPROM
   37                          * should behave like an Atmel 24c04.
   38                          */
   39                         compatible = "atmel,24c04";
   40                         reg = <0x50>;
   41                         pagesize = <16>;
   42                         size = <512>;
   43                         read-only;
   44                 };
   45         };
   46 
   47         soc {
   48                 bus@c4000000 {
   49                         /* Flash memory defined per-variant */
   50                         nand-controller@3,0 {
   51                                 /* Some designs have a NAND on CS3 enable it here if present */
   52                                 status = "disabled";
   53 
   54                                 /*
   55                                  * gen_nand needs to be extended and documented to get
   56                                  * command byte = 1 and address byte = 2 from the device
   57                                  * tree.
   58                                  */
   59                                 compatible = "gen_nand";
   60 
   61                                 /* Expansion bus set-up */
   62                                 intel,ixp4xx-eb-t1 = <0>;
   63                                 intel,ixp4xx-eb-t2 = <0>;
   64                                 intel,ixp4xx-eb-t3 = <1>; // 1 cycle extra strobe phase
   65                                 intel,ixp4xx-eb-t4 = <0>;
   66                                 intel,ixp4xx-eb-t5 = <0>;
   67                                 intel,ixp4xx-eb-cycle-type = <0>; // Intel cycle type
   68                                 intel,ixp4xx-eb-byte-access-on-halfword = <0>;
   69                                 intel,ixp4xx-eb-mux-address-and-data = <0>;
   70                                 intel,ixp4xx-eb-ahb-split-transfers = <0>;
   71                                 intel,ixp4xx-eb-write-enable = <1>;
   72                                 intel,ixp4xx-eb-byte-access = <1>;
   73 
   74                                 /* 512 bytes memory window */
   75                                 reg = <3 0x00000000 0x200>;
   76                                 nand-on-flash-bbt;
   77                                 nand-ecc-mode = "soft_bch";
   78                                 nand-ecc-step-size = <512>;
   79                                 nand-ecc-strength = <4>;
   80                                 nce-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>; /* NCE */
   81 
   82                                 label = "ixp400 NAND";
   83 
   84                                 partitions {
   85                                         compatible = "fixed-partitions";
   86                                         #address-cells = <1>;
   87                                         #size-cells = <1>;
   88 
   89                                         fs@0 {
   90                                                 label = "ixp400 NAND FS 0";
   91                                                 reg = <0x0 0x800000>;
   92                                         };
   93                                         fs@800000 {
   94                                                 label = "ixp400 NAND FS 1";
   95                                                 reg = <0x800000 0x0>;
   96                                         };
   97                                 };
   98                         };
   99                 };
  100 
  101                 pci@c0000000 {
  102                         status = "ok";
  103 
  104                         /*
  105                          * Taken from IXDP425 PCI boardfile.
  106                          * PCI slots on the BIXMB425BD base card.
  107                          * We have up to 4 slots (IDSEL) with 4 swizzled IRQs.
  108                          */
  109                         #interrupt-cells = <1>;
  110                         interrupt-map-mask = <0xf800 0 0 7>;
  111                         interrupt-map =
  112                         /* IDSEL 1 */
  113                         <0x0800 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 11 */
  114                         <0x0800 0 0 2 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 1 is irq 10 */
  115                         <0x0800 0 0 3 &gpio0 9  IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 1 is irq 9 */
  116                         <0x0800 0 0 4 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 1 is irq 8 */
  117                         /* IDSEL 2 */
  118                         <0x1000 0 0 1 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 10 */
  119                         <0x1000 0 0 2 &gpio0 9  IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 2 is irq 9 */
  120                         <0x1000 0 0 3 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 2 is irq 8 */
  121                         <0x1000 0 0 4 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 2 is irq 11 */
  122                         /* IDSEL 3 */
  123                         <0x1800 0 0 1 &gpio0 9  IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 3 is irq 9 */
  124                         <0x1800 0 0 2 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 3 is irq 8 */
  125                         <0x1800 0 0 3 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 3 is irq 11 */
  126                         <0x1800 0 0 4 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 3 is irq 10 */
  127                         /* IDSEL 4 */
  128                         <0x2000 0 0 1 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 4 is irq 8 */
  129                         <0x2000 0 0 2 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 4 is irq 11 */
  130                         <0x2000 0 0 3 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 4 is irq 10 */
  131                         <0x2000 0 0 4 &gpio0 9  IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 4 is irq 9 */
  132                 };
  133         };
  134 };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/src/arm/intel-ixp4xx-reference-design.dtsi

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sys/contrib/device-tree/src/arm/intel-ixp4xx-reference-design.dtsi