device-tree-bindings/pinctrl/pinctrl-bindings.txt

4 such as pull-up/down, tri-state, drive-strength etc are designated as pin
15 need to reconfigure pins at run-time, for example to tri-state pins when the
47 pinctrl-0:	List of phandles, each pointing at a pin configuration
65 pinctrl-1:	List of phandles, each pointing at a pin configuration
68 pinctrl-n:	List of phandles, each pointing at a pin configuration
70 pinctrl-names:	The list of names to assign states. List entry 0 defines the
78 		pinctrl-names = "active", "idle";
79 		pinctrl-0 = <&state_0_node_a>;
80 		pinctrl-1 = <&state_1_node_a &state_1_node_b>;
85 		pinctrl-0 = <&state_0_node_a>;
86 		pinctrl-1 = <&state_1_node_a &state_1_node_b>;
94 		pinctrl-names = "active", "idle";
95 		pinctrl-0 = <>;
96 		pinctrl-1 = <>;
134 function		- the mux function to select
135 groups			- the list of groups to select with this function
137 pins			- the list of pins to select with this function (either
170 pins			- the list of pins that properties in the node
173 group			- the group to apply the properties to, if the driver
177 bias-disable		- disable any pin bias
178 bias-high-impedance	- high impedance mode ("third-state", "floating")
179 bias-bus-hold		- latch weakly
180 bias-pull-up		- pull up the pin
181 bias-pull-down		- pull down the pin
182 bias-pull-pin-default	- use pin-default pull state
183 drive-push-pull		- drive actively high and low
184 drive-open-drain	- drive with open drain
185 drive-open-source	- drive with open source
186 drive-strength		- sink or source at most X mA
187 input-enable		- enable input on pin (no effect on output)
188 input-disable		- disable input on pin (no effect on output)
189 input-schmitt-enable	- enable schmitt-trigger mode
190 input-schmitt-disable	- disable schmitt-trigger mode
191 input-debounce		- debounce mode with debound time X
192 power-source		- select between different power supplies
193 low-power-enable	- enable low power mode
194 low-power-disable	- disable low power mode
195 output-low		- set the pin to output mode with low level
196 output-high		- set the pin to output mode with high level
197 slew-rate		- set the slew rate
204 		bias-pull-up;
210 		output-high;
215 		group = "foo-group";
216 		bias-pull-up;
223 - pins takes a list of pin names or IDs as a required argument. The specific
225   - Whether the entries are integers or strings, and their meaning.
227 - bias-pull-up, -down and -pin-default take as optional argument on hardware
228   supporting it the pull strength in Ohm. bias-disable will disable the pull.
230 - drive-strength takes as argument the target strength in mA.
232 - input-debounce takes the debounce time in usec as argument
235 More in-depth documentation on these parameters can be found in
236 <include/linux/pinctrl/pinconf-generic.h>