arch/arm/boot/dts/intel-ixp42x-ixdpg425.dts

   1 // SPDX-License-Identifier: ISC
   2 /*
   3  * Device Tree file for the Intel IXDPG425 reference design.
   4  * Derived from boardfiles written by MontaVista software.
   5  * Ethernet set-up from OpenWrt.
   6  *
   7  * The device has 4 x FXS RJ11 ports for analog phones for
   8  * internet telephony. (Not supported yet.)
   9  *
  10  * The device has 9 status LEDs we do not support yet.
  11  *
  12  * This device is very similar to ADI engingeering Coyote.
  13  */
  14
  15 /dts-v1/;
  16
  17 #include "intel-ixp42x.dtsi"
  18 #include <dt-bindings/input/input.h>
  19
  20 / {
  21         model = "Intel IXDPG425 reference design";
  22         compatible = "intel,ixdpg425", "intel,ixp42x";
  23         #address-cells = <1>;
  24         #size-cells = <1>;
  25
  26         memory@0 {
  27                 /* 32 MB SDRAM */
  28                 device_type = "memory";
  29                 reg = <0x00000000 0x02000000>;
  30         };
  31
  32         chosen {
  33                 bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
  34                 stdout-path = "uart0:115200n8";
  35         };
  36
  37         aliases {
  38                 serial0 = &uart0;
  39         };
  40
  41         soc {
  42                 bus@c4000000 {
  43                         flash@0,0 {
  44                                 compatible = "intel,ixp4xx-flash", "cfi-flash";
  45                                 bank-width = <2>;
  46                                 /*
  47                                  * CHECKME: the product brief says 16MB in a flash
  48                                  * socket.
  49                                  */
  50                                 reg = <0 0x00000000 0x1000000>;
  51
  52                                 /* Configure expansion bus to allow writes */
  53                                 intel,ixp4xx-eb-write-enable = <1>;
  54
  55                                 partitions {
  56                                         compatible = "redboot-fis";
  57                                         /* CHECKME: guess this is Redboot FIS */
  58                                         fis-index-block = <0x7f>;
  59                                 };
  60                         };
  61                 };
  62
  63                 pci@c0000000 {
  64                         status = "ok";
  65
  66                         /*
  67                          * Taken from IXDPG425 PCI boardfile.
  68                          * We have slots (IDSEL) 12, 13 and 14 with one assigned IRQ
  69                          * for 12 & 13 and one for 14.
  70                          */
  71                         interrupt-map =
  72                         /* IDSEL 12 */
  73                         <0x6000 0 0 1 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 12 is irq 7 */
  74                         <0x6000 0 0 2 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 12 is irq 7 */
  75                         <0x6000 0 0 3 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 12 is irq 7 */
  76                         <0x6000 0 0 4 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 12 is irq 7 */
  77                         /* IDSEL 13 */
  78                         <0x6800 0 0 1 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 13 is irq 7 */
  79                         <0x6800 0 0 2 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 13 is irq 7 */
  80                         <0x6800 0 0 3 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 13 is irq 7 */
  81                         <0x6800 0 0 4 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 13 is irq 7 */
  82                         /* IDSEL 14 */
  83                         <0x7000 0 0 1 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 14 is irq 6 */
  84                         <0x7000 0 0 2 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 14 is irq 6 */
  85                         <0x7000 0 0 3 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 14 is irq 6 */
  86                         <0x7000 0 0 4 &gpio0 6 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 14 is irq 6 */
  87                 };
  88
  89                 /*
  90                  * CHECKME: this ethernet setup seems dubious. Photos of the board shows some kind
  91                  * of Realtek DSA switch on the board.
  92                  */
  93
  94                 /* EthB */
  95                 ethernet@c8009000 {
  96                         status = "ok";
  97                         queue-rx = <&qmgr 3>;
  98                         queue-txready = <&qmgr 20>;
  99                         phy-mode = "rgmii";
 100                         phy-handle = <&phy5>;
 101
 102                         mdio {
 103                                 #address-cells = <1>;
 104                                 #size-cells = <0>;
 105
 106                                 phy4: ethernet-phy@4 {
 107                                         reg = <4>;
 108                                 };
 109
 110                                 phy5: ethernet-phy@5 {
 111                                         reg = <5>;
 112                                 };
 113                         };
 114                 };
 115
 116                 /* EthC */
 117                 ethernet@c800a000 {
 118                         status = "ok";
 119                         queue-rx = <&qmgr 4>;
 120                         queue-txready = <&qmgr 21>;
 121                         phy-mode = "rgmii";
 122                         phy-handle = <&phy4>;
 123                 };
 124         };
 125 };