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nxp,lpc11u6x-pinctrl

Vendor: NXP Semiconductors

Description

LPC pinctrl node. This node defines pin configurations in pin groups, and has
the 'pinctrl' node identifier in the SOC's devicetree. Each group within the
pin configuration defines a peripheral's pin configuration. Each numbered
subgroup represents pins with shared configuration for that peripheral. The
'pinmux' property of each group selects the pins to be configured with these
properties. For example, here is a configuration for FLEXCOMM0 pins:

pinmux_flexcomm0_usart: pinmux_flexcomm0_usart {
  group0 {
    pinmux = <FC0_TXD_SCL_MISO_WS_PIO0_30>,
            <FC0_RXD_SDA_MOSI_DATA_PIO0_29>;
    slew-rate = "standard";
  };
};

If only the required properties are supplied, the ICON_PIO register will
be assigned the following values:
IOCON_FUNC=<pin mux selection>,
IOCON_MODE=0,
IOCON_SLEW=<slew-rate selection>,
IOCON_INVERT=0,
IOCON_DIGIMODE=1,
IOCON_OD=0,

Values for I2C type and analog type pins have the following defaults:
IOCON_ASW=0
IOCON_SSEL=0
IOCON_FILTEROFF=1
IOCON_ECS=0
IOCON_EGP=1
IOCON_I2CFILTER=1

Note the inherited pinctrl properties defined below have the following effects:
drive-open-drain: IOCON_OD=1
bias-pull-up: IOCON_MODE=2
bias-pull-down: IOCON_MODE=1
drive-push-pull: IOCON_MODE=3

Note: for the LPC11u6x, the following fields are also supported:
IOCON_HYS- set by input-schmitt-enable
IOCON_S_MODE- set by nxp,digital-filter
IOCON_CLKDIV- set by nxp,filter-clock-div
IOCON_FILTR- set by nxp,analog-filter

Properties

Top level properties

These property descriptions apply to “nxp,lpc11u6x-pinctrl” nodes themselves. This page also describes child node properties in the following sections.

Node specific properties

Deprecated node specific properties

Base properties

Properties not inherited from the base binding file.

(None)

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 “nxp,lpc11u6x-pinctrl” 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.

Grandchild node properties

Name

Type

Details

nxp,digital-filter

int

 
Enable digital filter. Set number of clock cycles to use as rejection
threshold for input pulses. 0 disables the filter. Only valid for
lpc11u6x SOC. Filter defaults to disabled, as this is default reset
value for SOC

Legal values: 0, 1, 2, 3

nxp,filter-clock-div

int

 
set peripheral clock divider for input filter sampling clock
IOCONCLKDIV. Only valid for lpc11u6x SOC. Default to 0, as this
is the default reset value for the SOC.

Legal values: 0, 1, 2, 3, 4, 5, 6

nxp,disable-analog-filter

boolean

 
Disable fixed 10 ns input glitch analog filter. Only valid for lpc11u6x
SOC, on analog pins. Note that this filter is enabled on reset, hence
the choice to make disabling the filter opt-in

pinmux

array

 
Pin mux selection for this group. See the SOC level pinctrl header
file in NXP's HAL for a defined list of these options.

This property is required.

nxp,invert

boolean

 
Invert the pin input logic level

nxp,analog-mode

boolean

 
Set the pin to analog mode. Sets DIGIMODE=0, and ASW=1. Only valid for
analog type pins.

nxp,i2c-filter

string

 
I2C glitch filter speed. Only valid for I2C mode pins. Fast mode
typically only required for High speed I2C.

Legal values: 'slow', 'fast'

nxp,i2c-mode

boolean

 
Enable I2C mode for a pin. If not present, pin is in GPIO mode. Only
valid for I2C mode pins

bias-pull-up

boolean

 
enable pull-up resistor

bias-pull-down

boolean

 
enable pull-down resistor

drive-push-pull

boolean

 
drive actively high and low

drive-open-drain

boolean

 
drive with open drain (hardware AND)

input-schmitt-enable

boolean

 
enable schmitt-trigger mode