arch/arm/boot/dts/bcm2835.dtsi

   1 /include/ "skeleton.dtsi"
   2
   3 / {
   4         compatible = "brcm,bcm2835";
   5         model = "BCM2835";
   6         interrupt-parent = <&intc>;
   7
   8         chosen {
   9                 bootargs = "earlyprintk console=ttyAMA0";
  10         };
  11
  12         soc {
  13                 compatible = "simple-bus";
  14                 #address-cells = <1>;
  15                 #size-cells = <1>;
  16                 ranges = <0x7e000000 0x20000000 0x02000000>;
  17
  18                 timer {
  19                         compatible = "brcm,bcm2835-system-timer";
  20                         reg = <0x7e003000 0x1000>;
  21                         interrupts = <1 0>, <1 1>, <1 2>, <1 3>;
  22                         clock-frequency = <1000000>;
  23                 };
  24
  25                 intc: interrupt-controller {
  26                         compatible = "brcm,bcm2835-armctrl-ic";
  27                         reg = <0x7e00b200 0x200>;
  28                         interrupt-controller;
  29                         #interrupt-cells = <2>;
  30                 };
  31
  32                 watchdog {
  33                         compatible = "brcm,bcm2835-pm-wdt";
  34                         reg = <0x7e100000 0x28>;
  35                 };
  36
  37                 uart@20201000 {
  38                         compatible = "brcm,bcm2835-pl011", "arm,pl011", "arm,primecell";
  39                         reg = <0x7e201000 0x1000>;
  40                         interrupts = <2 25>;
  41                         clock-frequency = <3000000>;
  42                 };
  43
  44                 gpio: gpio {
  45                         compatible = "brcm,bcm2835-gpio";
  46                         reg = <0x7e200000 0xb4>;
  47                         /*
  48                          * The GPIO IP block is designed for 3 banks of GPIOs.
  49                          * Each bank has a GPIO interrupt for itself.
  50                          * There is an overall "any bank" interrupt.
  51                          * In order, these are GIC interrupts 17, 18, 19, 20.
  52                          * Since the BCM2835 only has 2 banks, the 2nd bank
  53                          * interrupt output appears to be mirrored onto the
  54                          * 3rd bank's interrupt signal.
  55                          * So, a bank0 interrupt shows up on 17, 20, and
  56                          * a bank1 interrupt shows up on 18, 19, 20!
  57                          */
  58                         interrupts = <2 17>, <2 18>, <2 19>, <2 20>;
  59
  60                         gpio-controller;
  61                         #gpio-cells = <2>;
  62
  63                         interrupt-controller;
  64                         #interrupt-cells = <2>;
  65                 };
  66         };
  67 };