gpio-samsung.txt

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 Samsung Exynos4 GPIO Controller
    2 
    3 Required properties:
    4 - compatible: Compatible property value should be "samsung,exynos4-gpio>".
    5 
    6 - reg: Physical base address of the controller and length of memory mapped
    7   region.
    8 
    9 - #gpio-cells: Should be 4. The syntax of the gpio specifier used by client nodes
   10   should be the following with values derived from the SoC user manual.
   11      <[phandle of the gpio controller node]
   12       [pin number within the gpio controller]
   13       [mux function]
   14       [flags and pull up/down]
   15       [drive strength]>
   16 
   17   Values for gpio specifier:
   18   - Pin number: is a value between 0 to 7.
   19   - Flags and Pull Up/Down: 0 - Pull Up/Down Disabled.
   20                             1 - Pull Down Enabled.
   21                             3 - Pull Up Enabled.
   22           Bit 16 (0x00010000) - Input is active low.
   23   - Drive Strength: 0 - 1x,
   24                     1 - 3x,
   25                     2 - 2x,
   26                     3 - 4x
   27 
   28 - gpio-controller: Specifies that the node is a gpio controller.
   29 - #address-cells: should be 1.
   30 - #size-cells: should be 1.
   31 
   32 Example:
   33 
   34         gpa0: gpio-controller@11400000 {
   35                 #address-cells = <1>;
   36                 #size-cells = <1>;
   37                 compatible = "samsung,exynos4-gpio";
   38                 reg = <0x11400000 0x20>;
   39                 #gpio-cells = <4>;
   40                 gpio-controller;
   41         };

Cache object: e6604f894995088863491aa6cdc52cf0

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

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

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