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led-strip-matrix

Vendor: Generic or vendor-independent

Note

An implementation of a driver matching this compatible is available in drivers/display/display_led_strip_matrix.c.

Description

Generic LED strip matrix (LED strip arranged in a grid pattern)

Properties

Properties not inherited from the base binding file.

Name

Type

Details

circulative

boolean

 
Use a circulative layout that returns to the left edge of the next row
after reaching the right edge.
If not set, turn around and go left in a serpentine layout when it reaches
the right edge.

* circulative layout
  [ 0][ 1][ 2][ 3]
  [ 4][ 5][ 6][ 7]
  [ 8][ 9][10][11]
  [12][13][14][15]

* serpentine layout
  [ 0][ 1][ 2][ 3]
  [ 7][ 6][ 5][ 4]
  [ 8][ 9][10][11]
  [15][14][13][12]

start-from-right

boolean

 
Specify if the first LED is at the right.

* Start from the right with a serpentine layout
  [ 3][ 2][ 1][ 0]
  [ 4][ 5][ 6][ 7]
  [11][10][ 9][ 8]
  [12][13][14][15]

* Start from the right with a circulative layout
  [ 3][ 2][ 1][ 0]
  [ 7][ 6][ 5][ 4]
  [11][10][ 9][ 8]
  [15][14][13][12]

start-from-bottom

boolean

 
Specify if the first LED is at the bottom.

* Start from the bottom with a circulative layout
  [12][13][14][15]
  [ 8][ 9][10][11]
  [ 4][ 5][ 6][ 7]
  [ 0][ 1][ 2][ 3]

* Start from the bottom with a serpentine layout
  [15][14][13][12]
  [ 8][ 9][10][11]
  [ 7][ 6][ 5][ 4]
  [ 0][ 1][ 2][ 3]

width

int

 
Specifies the overall width of the matrix.
If the matrix consists of multiple modules, it is the sum of their widths.

This property is required.

height

int

 
Specifies the overall height of the matrix.
If the matrix consists of multiple modules, it is the sum of their heights.

This property is required.

horizontal-modules

int

 
If the display forms with multiple modules,
specify the horizontal number of modules.
The number must be able to divide the width value.
If not set, it controls a single matrix.

* 8x4 display with 2 serpentine layout modules
  [ 0][ 1][ 2][ 3]  [16][17][18][19]
  [ 7][ 6][ 5][ 4]  [23][22][21][20]
  [ 8][ 9][10][11]  [24][25][26][27]
  [15][14][13][12]  [31][30][29][28]

Default value: 1

vertical-modules

int

 
If the display forms with multiple modules,
specify the vertical number of modules.
The number must be able to divide the height value.
If not set, it controls a single matrix.

* 4x8 display with 2 serpentine layout modules
  [ 0][ 1][ 2][ 3]
  [ 7][ 6][ 5][ 4]
  [ 8][ 9][10][11]
  [15][14][13][12]

  [16][17][18][19]
  [23][22][21][20]
  [24][25][26][27]
  [31][30][29][28]

Default value: 1

modules-circulative

boolean

 
Specifies that the order of the modules that make up the matrix is circulative.

* circulative module layout
  [M0][M1][M2]
  [M3][M4][M5]
  [M6][M7][M8]

* serpentine module layout
  [M0][M1][M2]
  [M5][M4][M3]
  [M6][M7][M8]

modules-start-from-right

boolean

 
Specifies that modules are ordered from right to left.

* Start from the right with a module serpentine layout
  [M2][M1][M0]
  [M3][M4][M5]
  [M8][M7][M6]

* Start from the right with a module circulative layout
  [M2][M1][M0]
  [M5][M4][M3]
  [M8][M7][M6]

modules-start-from-bottom

boolean

 
Specifies that modules are ordered from bottom to top.

* Start from the right with a module serpentine layout
  [M6][M7][M8]
  [M5][M4][M3]
  [M0][M1][M2]

* Start from the right with a module circulative layout
  [M6][M7][M8]
  [M3][M4][M5]
  [M0][M1][M2]

led-strips

phandles

 
Specify the LED strip that is the substance of the matrix.
If multiple strips are specified, they are "flattened" and sequentialized.
For example, if `strip0` and `strip1` with 128 LEDs are specified,
the first LED of `strip1` will be treated as the 129th LED.
These LEDs are mapped to coordinates according to the layout rule in order.
The amount of LEDs must equal the [width * height] value.

This property is required.

chain-lengths

array

 
Specify the number of LEDs for each strip.
It can omit the value if all strip nodes have a `chain-length` property.
Each value must be a multiple of the number of LEDs per module
[(width / horizontal-modules) * (height / vertical-modules)].

pixel-format

int

 
Initial Pixel format.
See dt-bindings/display/panel.h for a list.
This property only accepts PANEL_PIXEL_FORMAT_RGB_888 and PANEL_PIXEL_FORMAT_RRGB_8888.
If this property is not set, use PANEL_PIXEL_FORMAT_RGB_888 as a default.

Default value: 1