:orphan:
.. raw:: html
.. dtcompatible:: istech,ist3931
.. _dtbinding_istech_ist3931:
istech,ist3931 (on i2c bus)
###########################
Vendor: :ref:`Integrated Solutions Technology Inc. `
.. note::
An implementation of a driver matching this compatible is available in
:zephyr_file:`drivers/display/display_ist3931.c`.
Description
***********
.. code-block:: none
IST3931 65x132 display controller
Properties
**********
.. tabs::
.. group-tab:: Node specific properties
Properties not inherited from the base binding file.
.. list-table::
:widths: 1 1 4
:header-rows: 1
* - Name
- Type
- Details
* - ``reset-gpios``
- ``phandle-array``
- .. code-block:: none
RESET pin.
The RESET pin of IST3931 is active low.
If connected directly the MCU pin should be configured
as active low.
This property is **required**.
* - ``x-offset``
- ``int``
- .. code-block:: none
The column offset in pixels of the LCD to the controller memory
This property is **required**.
* - ``y-offset``
- ``int``
- .. code-block:: none
The row offset in pixels of the LCD to the controller memory
This property is **required**.
* - ``voltage-converter``
- ``boolean``
- .. code-block:: none
Internal voltage converter circuits will be enabled if true
* - ``voltage-follower``
- ``boolean``
- .. code-block:: none
Internal voltage follower circuits will be enabled if true
* - ``lcd-bias``
- ``int``
- .. code-block:: none
LCD bias ratio of the voltage required for driving the LCD
This property is **required**.
* - ``lcd-ct``
- ``int``
- .. code-block:: none
reference voltage V0= [0.7+CT*0.005]/Bias at 24 degree Celsius
This property is **required**.
* - ``duty-ratio``
- ``int``
- .. code-block:: none
Com_1~COM_N is select, N=Duty-ratio.
This property is **required**.
* - ``frame-control``
- ``int``
- .. code-block:: none
Frame-control of row frequency and frame frequency. Row frequency = 3X10^6/ Frame-control Frame frequency = Row frequency / Duty-ratio
This property is **required**.
* - ``reverse-com-output``
- ``boolean``
- .. code-block:: none
Common Output Mode Select, the output mode will be COM_1->COM_N if set to 0
* - ``reverse-seg-driver``
- ``boolean``
- .. code-block:: none
Defines the relationship between RAM column address and segment driver. the mapping will be SEG1->SEG132 if set to 0
* - ``e-force-on``
- ``boolean``
- .. code-block:: none
turn on whole LCD points regardless of display RAM
* - ``reverse-ram-lcd``
- ``boolean``
- .. code-block:: none
Reverse the lit and unlit display relation between RAM bit data and LCD cell
* - ``supply-gpios``
- ``phandle-array``
- .. code-block:: none
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``
- .. code-block:: none
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.
* - ``height``
- ``int``
- .. code-block:: none
Height of the panel driven by the controller, with the units in pixels.
This property is **required**.
* - ``width``
- ``int``
- .. code-block:: none
Width of the panel driven by the controller, with the units in pixels.
This property is **required**.
.. group-tab:: Deprecated node specific properties
Deprecated properties not inherited from the base binding file.
(None)
.. group-tab:: 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 "istech,ist3931" compatible.
.. list-table::
:widths: 1 1 4
:header-rows: 1
* - Name
- Type
- Details
* - ``reg``
- ``array``
- .. code-block:: none
device address on i2c bus
This property is **required**.
See :ref:`zephyr:dt-important-props` for more information.
* - ``status``
- ``string``
- .. code-block:: none
indicates the operational status of a device
Legal values: ``'ok'``, ``'okay'``, ``'disabled'``, ``'reserved'``, ``'fail'``, ``'fail-sss'``
See :ref:`zephyr:dt-important-props` for more information.
* - ``compatible``
- ``string-array``
- .. code-block:: none
compatible strings
This property is **required**.
See :ref:`zephyr:dt-important-props` for more information.
* - ``reg-names``
- ``string-array``
- .. code-block:: none
name of each register space
* - ``interrupts``
- ``array``
- .. code-block:: none
interrupts for device
See :ref:`zephyr:dt-important-props` for more information.
* - ``interrupts-extended``
- ``compound``
- .. code-block:: none
extended interrupt specifier for device
* - ``interrupt-names``
- ``string-array``
- .. code-block:: none
name of each interrupt
* - ``interrupt-parent``
- ``phandle``
- .. code-block:: none
phandle to interrupt controller node
* - ``label``
- ``string``
- .. code-block:: none
Human readable string describing the device (used as device_get_binding() argument)
See :ref:`zephyr:dt-important-props` for more information.
This property is **deprecated**.
* - ``clocks``
- ``phandle-array``
- .. code-block:: none
Clock gate information
* - ``clock-names``
- ``string-array``
- .. code-block:: none
name of each clock
* - ``#address-cells``
- ``int``
- .. code-block:: none
number of address cells in reg property
* - ``#size-cells``
- ``int``
- .. code-block:: none
number of size cells in reg property
* - ``dmas``
- ``phandle-array``
- .. code-block:: none
DMA channels specifiers
* - ``dma-names``
- ``string-array``
- .. code-block:: none
Provided names of DMA channel specifiers
* - ``io-channels``
- ``phandle-array``
- .. code-block:: none
IO channels specifiers
* - ``io-channel-names``
- ``string-array``
- .. code-block:: none
Provided names of IO channel specifiers
* - ``mboxes``
- ``phandle-array``
- .. code-block:: none
mailbox / IPM channels specifiers
* - ``mbox-names``
- ``string-array``
- .. code-block:: none
Provided names of mailbox / IPM channel specifiers
* - ``power-domains``
- ``phandle-array``
- .. code-block:: none
Power domain specifiers
* - ``power-domain-names``
- ``string-array``
- .. code-block:: none
Provided names of power domain specifiers
* - ``#power-domain-cells``
- ``int``
- .. code-block:: none
Number of cells in power-domains property
* - ``zephyr,deferred-init``
- ``boolean``
- .. code-block:: none
Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
* - ``wakeup-source``
- ``boolean``
- .. code-block:: none
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``
- .. code-block:: none
Automatically configure the device for runtime power management after the
init function runs.
* - ``zephyr,disabling-power-states``
- ``phandles``
- .. code-block:: none
List of power states that will disable this device power.