This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

sitronix,st7735r (on spi bus)

Vendor: Sitronix Technology Corporation

Description

ST7735R 160x128 display controller

Properties

Properties not inherited from the base binding file.

Name

Type

Details

reset-gpios

phandle-array

RESET pin.
The RESET pin of ST7735R is active low. If connected directly the MCU pin should be configured as active low.

This property is required.

cmd-data-gpios

phandle-array

D/CX pin.
The D/CX pin of ST7735R is active low (transmission command byte). If connected directly the MCU pin should be configured as active low.

This property is required.

height

int

Height in pixels of the panel driven by the controller

This property is required.

width

int

Width in pixels of the panel driven by the controller

This property is required.

x-offset

int

The column offset in pixels of the LCD to the controller memory

This property is required.

y-offset

int

The row offset in pixels of the LCD to the controller memory

This property is required.

madctl

int

Memory Data Access Control

colmod

int

Interface Pixel Format

Default value: 6

pwctr1

uint8-array

Power Control 1 Parameter

Default value: [180, 20, 4]

pwctr2

uint8-array

Power Control 2 Parameter

Default value: [192]

pwctr3

uint8-array

Power Control 3 Parameter

Default value: [10, 0]

pwctr4

uint8-array

Power Control 4 Parameter

Default value: [138, 38]

pwctr5

uint8-array

Power Control 5 Parameter

Default value: [138, 238]

gamctrp1

uint8-array

Positive Voltage Gamma Control Parameter

This property is required.

gamctrn1

uint8-array

Negative Voltage Gamma Control Parameter

This property is required.

frmctr1

uint8-array

Frame rate control (normal mode / full colors)

Default value: [5, 58, 58]

frmctr2

uint8-array

Frame rate control (idle mode / 8 colors)

Default value: [5, 58, 58]

frmctr3

uint8-array

Frame rate control (partial mode / full colors)

Default value: [5, 58, 58, 5, 58, 58]

caset

uint8-array

Column Address Set

Default value: [0, 0, 0, 127]

raset

uint8-array

Row Address Set

Default value: [0, 0, 0, 159]

vmctr1

int

VCOM Control 1

Default value: 10

invctr

int

Display Inversion Control

Default value: 7

spi-max-frequency

int

Maximum clock frequency of device's SPI interface in Hz

This property is required.

duplex

int

Duplex mode, full or half. By default it's always full duplex thus 0
as this is, by far, the most common mode.
Use the macros not the actual enum value, here is the concordance
list (see dt-bindings/spi/spi.h)
  0    SPI_FULL_DUPLEX
  2048 SPI_HALF_DUPLEX

Legal values: 0, 2048

supply-gpios

phandle-array

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.