lantiq,pinctrl-falcon.txt

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    1 Lantiq FALCON pinmux controller
    2 
    3 Required properties:
    4 - compatible: "lantiq,pinctrl-falcon"
    5 - reg: Should contain the physical address and length of the gpio/pinmux
    6   register range
    7 
    8 Please refer to pinctrl-bindings.txt in this directory for details of the
    9 common pinctrl bindings used by client devices, including the meaning of the
   10 phrase "pin configuration node".
   11 
   12 Lantiq's pin configuration nodes act as a container for an arbitrary number of
   13 subnodes. Each of these subnodes represents some desired configuration for a
   14 pin, a group, or a list of pins or groups. This configuration can include the
   15 mux function to select on those group(s), and two pin configuration parameters:
   16 pull-up and open-drain
   17 
   18 The name of each subnode is not important as long as it is unique; all subnodes
   19 should be enumerated and processed purely based on their content.
   20 
   21 Each subnode only affects those parameters that are explicitly listed. In
   22 other words, a subnode that lists a mux function but no pin configuration
   23 parameters implies no information about any pin configuration parameters.
   24 Similarly, a pin subnode that describes a pullup parameter implies no
   25 information about e.g. the mux function.
   26 
   27 We support 2 types of nodes.
   28 
   29 Definition of mux function groups:
   30 
   31 Required subnode-properties:
   32 - lantiq,groups : An array of strings. Each string contains the name of a group.
   33   Valid values for these names are listed below.
   34 - lantiq,function: A string containing the name of the function to mux to the
   35   group. Valid values for function names are listed below.
   36 
   37 Valid values for group and function names:
   38 
   39   mux groups:
   40     por, ntr, ntr8k, hrst, mdio, bootled, asc0, spi, spi cs0, spi cs1, i2c,
   41     jtag, slic, pcm, asc1
   42 
   43   functions:
   44     rst, ntr, mdio, led, asc, spi, i2c, jtag, slic, pcm
   45 
   46 
   47 Definition of pin configurations:
   48 
   49 Required subnode-properties:
   50 - lantiq,pins : An array of strings. Each string contains the name of a pin.
   51   Valid values for these names are listed below.
   52 
   53 Optional subnode-properties:
   54 - lantiq,pull: Integer, representing the pull-down/up to apply to the pin.
   55     0: none, 1: down
   56 - lantiq,drive-current: Boolean, enables drive-current
   57 - lantiq,slew-rate: Boolean, enables slew-rate
   58 
   59 Example:
   60         pinmux0 {
   61                 compatible = "lantiq,pinctrl-falcon";
   62                 pinctrl-names = "default";
   63                 pinctrl-0 = <&state_default>;
   64 
   65                 state_default: pinmux {
   66                         asc0 {
   67                                 lantiq,groups = "asc0";
   68                                 lantiq,function = "asc";
   69                         };
   70                         ntr {
   71                                 lantiq,groups = "ntr8k";
   72                                 lantiq,function = "ntr";
   73                         };
   74                         i2c {
   75                                 lantiq,groups = "i2c";
   76                                 lantiq,function = "i2c";
   77                         };
   78                         hrst {
   79                                 lantiq,groups = "hrst";
   80                                 lantiq,function = "rst";
   81                         };
   82                 };
   83         };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/pinctrl/lantiq,pinctrl-falcon.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/pinctrl/lantiq,pinctrl-falcon.txt