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particle-gen3-header

Description

GPIO pins exposed on Particle Gen3 (Feather) headers.

The Particle Gen3 boards are compatible with the Adafruit Feather
"shields" but use a different orientation and pin numbering scheme.

With the board oriented with the micro USB at the top:
* A 12-pin header on the right.  9 pins on this header are exposed
  by this binding
* A 16-pin header.  13 pins on this header are exposed by this
  binding.

This binding provides a nexus mapping for 22 pins where parent pins
0 through 8 correspond to the pins on the 12-pin header, starting
from the bottom; and pins 9 through 21 correspond to pins on the
16-pin header, skipping the bottom pin then assigning 9 through 19,
skipping over GND, and replacing the lower 3V3 with pin 20.  The
physical layout is depicted below.

    21 RESETn
    -  3V3
    20 MODEn
    -  GND
    19 ADC0                  LiPo+   -
    18 ADC1                  ENABLE  -
    17 ADC2                  VBUS    -
    16 ADC3                  PWM1    8
    15 ADC4                  PWM0    7
    14 SS                    PWM1    6
    13 SCK                   PWM1    5
    12 MOSI                  PWM1    4
    11 MISO                  PWM3    3
    10 RX                    PWM3    2
     9 TX                    SCL     1
    -  n/c                   SDA     0

Properties

Properties not inherited from the base binding file.

Name	Type	Details
`gpio-map`	`compound`	This property is required.
`gpio-map-mask`	`compound`
`gpio-map-pass-thru`	`compound`
`#gpio-cells`	`int`	Number of items to expect in a GPIO specifier This property is required.

Deprecated properties not inherited from the base binding file.

(None)

Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “particle-gen3-header” compatible.

Name	Type	Details
`status`	`string`	indicates the operational status of a device Legal values: `'ok'`, `'okay'`, `'disabled'`, `'reserved'`, `'fail'`, `'fail-sss'` See Important properties for more information.
`compatible`	`string-array`	compatible strings This property is required. See Important properties for more information.
`reg`	`array`	register space See Important properties for more information.
`reg-names`	`string-array`	name of each register space
`interrupts`	`array`	interrupts for device See Important properties for more information.
`interrupts-extended`	`compound`	extended interrupt specifier for device
`interrupt-names`	`string-array`	name of each interrupt
`interrupt-parent`	`phandle`	phandle to interrupt controller node
`label`	`string`	Human readable string describing the device (used as device_get_binding() argument) See Important properties for more information.
`clocks`	`phandle-array`	Clock gate information
`clock-names`	`string-array`	name of each clock
`#address-cells`	`int`	number of address cells in reg property
`#size-cells`	`int`	number of size cells in reg property
`dmas`	`phandle-array`	DMA channels specifiers
`dma-names`	`string-array`	Provided names of DMA channel specifiers
`io-channels`	`phandle-array`	IO channels specifiers
`io-channel-names`	`string-array`	Provided names of IO channel specifiers
`mboxes`	`phandle-array`	mailbox / IPM channels specifiers
`mbox-names`	`string-array`	Provided names of mailbox / IPM channel specifiers
`wakeup-source`	`boolean`	Property to identify that a device can be used as wake up source. When this property is provided a specific flag is set into the device that tells the system that the device is capable of wake up the system. Wake up capable devices are disabled (interruptions will not wake up the system) by default but they can be enabled at runtime if necessary.
`power-domain`	`phandle`	Power domain the device belongs to. The device will be notified when the power domain it belongs to is either suspended or resumed.