Lantiq FALCON pinmux controller Required properties: - compatible: "lantiq,pinctrl-falcon" - reg: Should contain the physical address and length of the gpio/pinmux register range Please refer to pinctrl-bindings.txt in this directory for details of the common pinctrl bindings used by client devices, including the meaning of the phrase "pin configuration node". Lantiq's pin configuration nodes act as a container for an arbitrary number of subnodes. Each of these subnodes represents some desired configuration for a pin, a group, or a list of pins or groups. This configuration can include the mux function to select on those group(s), and two pin configuration parameters: pull-up and open-drain The name of each subnode is not important as long as it is unique; all subnodes should be enumerated and processed purely based on their content. Each subnode only affects those parameters that are explicitly listed. In other words, a subnode that lists a mux function but no pin configuration parameters implies no information about any pin configuration parameters. Similarly, a pin subnode that describes a pullup parameter implies no information about e.g. the mux function. We support 2 types of nodes. Definition of mux function groups: Required subnode-properties: - lantiq,groups : An array of strings. Each string contains the name of a group. Valid values for these names are listed below. - lantiq,function: A string containing the name of the function to mux to the group. Valid values for function names are listed below. Valid values for group and function names: mux groups: por, ntr, ntr8k, hrst, mdio, bootled, asc0, spi, spi cs0, spi cs1, i2c, jtag, slic, pcm, asc1 functions: rst, ntr, mdio, led, asc, spi, i2c, jtag, slic, pcm Definition of pin configurations: Required subnode-properties: - lantiq,pins : An array of strings. Each string contains the name of a pin. Valid values for these names are listed below. Optional subnode-properties: - lantiq,pull: Integer, representing the pull-down/up to apply to the pin. 0: none, 1: down - lantiq,drive-current: Boolean, enables drive-current - lantiq,slew-rate: Boolean, enables slew-rate Example: pinmux0 { compatible = "lantiq,pinctrl-falcon"; pinctrl-names = "default"; pinctrl-0 = <&state_default>; state_default: pinmux { asc0 { lantiq,groups = "asc0"; lantiq,function = "asc"; }; ntr { lantiq,groups = "ntr8k"; lantiq,function = "ntr"; }; i2c { lantiq,groups = "i2c"; lantiq,function = "i2c"; }; hrst { lantiq,groups = "hrst"; lantiq,function = "rst"; }; }; };