nxp,mci-io-mux

Vendor: NXP Semiconductors N.V.

Description

MCI IO MUX pin control 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 = <IO_MUX_FC0_USART_DATA_IO2>,
            <IO_MUX_FC0_USART_DATA_IO3>;
    slew-rate = "normal";
  };
};

If only the required properties are supplied, the pin will be configured
as normal drive strength and no pull. This corresponds to the following
pin settings:
PAD_PU_PD_ENx = (0x0 << pin_index)
SR_CONFIGx = (0x2 << pin_index)

Note

Note the inherited pinctrl properties defined below have the following effects:
bias-pull-up: PAD_PU_PD_ENx= (0x1 << pin_index)
bias-pull-down: PAD_PU_PD_ENx= (0x10 << pin_index)

Properties

Top level properties

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

Node specific properties

Properties not inherited from the base binding file.

(None)

Deprecated node specific properties

Deprecated properties not inherited from the base binding file.

(None)

Base properties

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,mci-io-mux” 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.

This property is deprecated.

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

power-domains

phandle-array

 
Power domain specifiers

power-domain-names

string-array

 
Provided names of power domain specifiers

#power-domain-cells

int

 
Number of cells in power-domains property

zephyr,deferred-init

boolean

 
Do not initialize device automatically on boot. Device should be manually
initialized using device_init().

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.

zephyr,pm-device-runtime-auto

boolean

 
Automatically configure the device for runtime power management after the
init function runs.

zephyr,disabling-power-states

phandles

 
List of power states that will disable this device power.

Grandchild node properties

Name

Type

Details

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.

slew-rate

string

 
Pin output slew rate. Sets the GPIOxx_SR field in the SR_CONFIGx
register.
0 - slow slew rate
1 - normal slew rate
2 - fast slew rate
3 - fastest slew rate (ultra)

This property is required.

Legal values: 'slow', 'normal', 'fast', 'ultra'

bias-pull-up

boolean

 
enable pull-up resistor

bias-pull-down

boolean

 
enable pull-down resistor