solomon,ssd1327fb (on i2c bus)

Vendor: Solomon Systech Limited

Description

Solomon SSD1327 display controller on I2C bus

The Solomon SSD1327 is a 4-bit greyscale OLED controller
with a maximum 128x128 resolution.

Properties

Properties not inherited from the base binding file.

Name

Type

Details

oscillator-freq

int

Front clock divider (3:0) / oscillator frequency (7:4). It can be set to 0x0. If you get weird scanlines, increase oscillator frequency and play with phase length values, for example set this to 0x70. Note this increases power consumption.

This property is required.

display-offset

int

Vertical offset by com from 0 ~ 127. Typically 128 - height.

This property is required.

start-line

int

Start line of display RAM to be displayed by selecting a value from 0 to 127. Typically 0.

This property is required.

multiplex-ratio

int

Multiplex ratio from 15MUX to 127MUX. Typically same value as height - 1.

This property is required.

prechargep

int

Pre-charge period ranging from 0 to 15 DCLK's

This property is required.

remap-value

int

Remap register
Has multiple configurations (see each bit setting in the datasheet) - Column Address Remapping (A[0]) - Nibble Remapping (A[1]) - Address increment mode (A[2]), off is horizontal, on is vertical. - COM Remapping (A[4]) - Undocumented related to a monochrome mode, not supported by all displays (A[5]) - Splitting of Odd / Even COM Signals (A[6])
A[0], A[1], and A[4], define flipping of the display. A[6] is needed when display has striping. A[2] and A[5] must be off for this driver.

This property is required.

phase-length

int

Phase Length for segment charging (7:4) and discharging (3:0). Good values to try first are 0x1f and 0xf1.

This property is required.

function-selection-b

int

Enables second precharge (A[1]), and external Voltage Segment Level (A[0]) The value can either be 0x61, 0x62, or 0x63. Most displays use 0x62.

Default value: 98

precharge-voltage

int

Set precharge voltage (0:4) from 0.20 x VCC to 0.613 x VCC (0x7) and VCOMH (0x8+). Most displays support 0x8.

Default value: 8

vcomh-voltage

int

Set precharge voltage (0:3) from 0.72 x VCC to 0.86 x VCC Most displays support 0x7.

Default value: 7

inversion-on

boolean

Turn on display color inverting

height

int

Height of the panel driven by the controller, with the units in pixels.

This property is required.

width

int

Width of the panel driven by the controller, with the units in pixels.

This property is required.

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.