The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/gpio/gpio-mpc8xxx.txt

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    1 * Freescale MPC512x/MPC8xxx/QorIQ/Layerscape GPIO controller
    2 
    3 Required properties:
    4 - compatible : Should be "fsl,<soc>-gpio"
    5   The following <soc>s are known to be supported:
    6         mpc5121, mpc5125, mpc8349, mpc8572, mpc8610, pq3, qoriq,
    7         ls1021a, ls1043a, ls2080a, ls1028a, ls1088a.
    8 - reg : Address and length of the register set for the device
    9 - interrupts : Should be the port interrupt shared by all 32 pins.
   10 - #gpio-cells : Should be two.  The first cell is the pin number and
   11   the second cell is used to specify the gpio polarity:
   12       0 = active high
   13       1 = active low
   14 
   15 Optional properties:
   16 - little-endian : GPIO registers are used as little endian. If not
   17                   present registers are used as big endian by default.
   18 
   19 Example of gpio-controller node for a mpc5125 SoC:
   20 
   21 gpio0: gpio@1100 {
   22         compatible = "fsl,mpc5125-gpio";
   23         #gpio-cells = <2>;
   24         reg = <0x1100 0x080>;
   25         interrupts = <78 0x8>;
   26 };
   27 
   28 Example of gpio-controller node for a ls2080a SoC:
   29 
   30 gpio0: gpio@2300000 {
   31         compatible = "fsl,ls2080a-gpio", "fsl,qoriq-gpio";
   32         reg = <0x0 0x2300000 0x0 0x10000>;
   33         interrupts = <0 36 0x4>; /* Level high type */
   34         gpio-controller;
   35         little-endian;
   36         #gpio-cells = <2>;
   37         interrupt-controller;
   38         #interrupt-cells = <2>;
   39 };
   40 
   41 
   42 Example of gpio-controller node for a ls1028a/ls1088a SoC:
   43 
   44 gpio1: gpio@2300000 {
   45         compatible = "fsl,ls1028a-gpio", "fsl,ls1088a-gpio", "fsl,qoriq-gpio";
   46         reg = <0x0 0x2300000 0x0 0x10000>;
   47         interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
   48         gpio-controller;
   49         #gpio-cells = <2>;
   50         interrupt-controller;
   51         #interrupt-cells = <2>;
   52         little-endian;
   53 };

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