ti,lp503x (on i2c bus)

Vendor: Texas Instruments

Description

TI LP503x LED controller node

Properties

Top level properties

These property descriptions apply to “ti,lp503x” nodes themselves. This page also describes child node properties in the following sections.

Node specific properties

Base properties

Properties not inherited from the base binding file.

Name

Type

Details

max_curr_opt

boolean

 
If enabled the maximum current output is set to 35 mA (25.5 mA else).

log_scale_en

boolean

 
If enabled a logarithmic dimming scale curve is used for LED brightness
control. A linear dimming scale curve is used else.

supply-gpios

phandle

 
GPIO specifier that controls power to the device.

This property should be provided when the device has a dedicated
switch that controls power to the device.  The supply state is
entirely the responsibility of the device driver.

Contrast with vin-supply.

vin-supply

phandle

 
Reference to the regulator that controls power to the device.
The referenced devicetree node must have a regulator compatible.

This property should be provided when device power is supplied
by a shared regulator.  The supply state is dependent on the
request status of all devices fed by the regulator.

Contrast with supply-gpios.  If both properties are provided
then the regulator must be requested before the supply GPIOS is
set to an active state, and the supply GPIOS must be set to an
inactive state before releasing the regulator.

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 “ti,lp503x” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

See Important properties for more information.

label

string

 
Human readable string describing the device (used as device_get_binding() argument)

This property is required.

See Important properties for more information.

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-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

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

Child node properties

Name

Type

Details

label

string

 
Human readable string describing the LED

This property is required.

See Important properties for more information.

index

int

 
Index of the LED on a controller. It can be used by drivers or
applications to map a logical LED to its real position on the
controller. For example, this allows to handle boards where the
LEDs in an array/strip are not wired following the LED order of
the controller.

This property is required.

color-mapping

array

 
Channel to color mapping of a multicolor LED. If a LED supports
several colors, then the color-mapping property can be used to
describe how the hardware channels and the colors are mapped.

For example the channel to color mapping of RGB LEDs would be

   color-mapping =
        <LED_COLOR_ID_RED>,
        <LED_COLOR_ID_GREEN>,
        <LED_COLOR_ID_BLUE>;

This property is required.