:orphan:
.. raw:: html
.. dtcompatible:: ti,am654-sdhci
.. _dtbinding_ti_am654_sdhci:
ti,am654-sdhci
##############
.. sidebar:: Overview
:Name: ``ti,am654-sdhci``
:Vendor: :ref:`Texas Instruments `
:Used in: :zephyr:board-catalog:`List of boards <#compatibles=ti,am654-sdhci>` using
this compatible
:Driver: :zephyr_file:`drivers/sdhc/sdhc_ti_am654.c`
Description
***********
These nodes are "sd" bus nodes.
.. code-block:: none
TI SD/eMMC Host 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
* - ``ti,is-embedded``
- ``boolean``
- .. code-block:: none
Whether the slot type is embedded or not
* - ``ti,dll-present``
- ``boolean``
- .. code-block:: none
Whether PHY requires DLL configuration or not
* - ``ti,fails-without-test-cd``
- ``boolean``
- .. code-block:: none
When present, indicates that the CD line is not connected and the controller must be put into Test mode to force the Card Detect signal high by setting the TESTCD bit.
* - ``ti,clkbuf-sel``
- ``int``
- .. code-block:: none
Clock Delay Buffer Select
This property is **required**.
* - ``ti,strobe-sel``
- ``int``
- .. code-block:: none
Strobe Select Delay
* - ``ti,strobe-sel-4-bit``
- ``boolean``
- .. code-block:: none
Use 4-bit strobe selection mask instead of full 8-bit mask
* - ``ti,dll-frqsel-2-bit``
- ``boolean``
- .. code-block:: none
Use 2-bit legacy frequency selection instead of 3-bit mode
* - ``ti,driver-strength-ohm``
- ``int``
- .. code-block:: none
DLL drive strength in ohms
Legal values: ``33``, ``40``, ``50``, ``66``, ``100``
* - ``ti,trm-icp``
- ``int``
- .. code-block:: none
DLL trim select
* - ``ti,itap-del-sel-legacy``
- ``int``
- .. code-block:: none
Input tap delay for SD/MMC legacy timing
* - ``ti,otap-del-sel-legacy``
- ``int``
- .. code-block:: none
Output tap delay for SD/MMC legacy timing
* - ``ti,itap-del-sel-hs``
- ``int``
- .. code-block:: none
Input tap delay for SD/MMC High Speed timing
* - ``ti,otap-del-sel-hs``
- ``int``
- .. code-block:: none
Output tap delay for SD/MMC High Speed timing
* - ``ti,itap-del-sel-sdr12``
- ``int``
- .. code-block:: none
Input tap delay for SD UHS SDR12 timing
* - ``ti,otap-del-sel-sdr12``
- ``int``
- .. code-block:: none
Output tap delay for SD UHS SDR12 timing
* - ``ti,itap-del-sel-sdr25``
- ``int``
- .. code-block:: none
Input tap delay for SD UHS SDR25 timing
* - ``ti,otap-del-sel-sdr25``
- ``int``
- .. code-block:: none
Output tap delay for SD UHS SDR25 timing
* - ``ti,otap-del-sel-sdr50``
- ``int``
- .. code-block:: none
Output tap delay for SD UHS SDR50 timing
* - ``ti,itap-del-sel-ddr50``
- ``int``
- .. code-block:: none
Input tap delay for SD UHS DDR50 timing
* - ``ti,otap-del-sel-ddr50``
- ``int``
- .. code-block:: none
Output tap delay for SD UHS DDR50 timing
* - ``ti,itap-del-sel-ddr52``
- ``int``
- .. code-block:: none
Input tap delay for eMMC DDR52 timing
* - ``ti,otap-del-sel-ddr52``
- ``int``
- .. code-block:: none
Output tap delay for eMMC DDR52 timing
* - ``ti,otap-del-sel-sdr104``
- ``int``
- .. code-block:: none
Output tap delay for SD UHS SDR104 timing
* - ``ti,otap-del-sel-hs200``
- ``int``
- .. code-block:: none
Output tap delay for eMMC HS200 timing
* - ``vmmc-supply``
- ``phandle``
- .. code-block:: none
Phandle to the regulator that provides the main power supply voltage
to the MMC/SD card.
* - ``vqmmc-supply``
- ``phandle``
- .. code-block:: none
Phandle to the regulator that provides the I/O signaling voltage
(VDDIO) to the MMC/SD card.
* - ``max-current-330``
- ``int``
- .. code-block:: none
Max drive current in mA at 3.3V. A value of zero indicates no maximum
is specified by the driver.
Default value: ``0``
* - ``max-current-300``
- ``int``
- .. code-block:: none
Max drive current in mA at 3.0V. A value of zero indicates no maximum
is specified by the driver.
Default value: ``0``
* - ``max-current-180``
- ``int``
- .. code-block:: none
Max drive current in mA at 1.8V. A value of zero indicates no maximum
is specified by the driver.
Default value: ``0``
* - ``max-bus-freq``
- ``int``
- .. code-block:: none
Maximum bus frequency for SD card. This should be the highest frequency
the SDHC is capable of negotiating with cards on the bus.
Default value: ``400000``
* - ``min-bus-freq``
- ``int``
- .. code-block:: none
Minimum bus frequency for SD card. This should be the frequency that
cards first will select when attached to the SDHC bus
Default value: ``400000``
* - ``power-delay-ms``
- ``int``
- .. code-block:: none
time in ms for SDHC to delay when toggling power to the SD card. This
delay gives the card time to power up or down fully
Default value: ``500``
* - ``mmc-hs200-1_8v``
- ``boolean``
- .. code-block:: none
The host controller supports HS200 at 1.8V
* - ``mmc-hs400-1_8v``
- ``boolean``
- .. code-block:: none
The host controller supports HS400 at 1.8V
* - ``mmc-hs400-enhanced-strobe``
- ``boolean``
- .. code-block:: none
The host controller and board support eMMC HS400 enhanced strobe.
This mode also requires HS400 at 1.8V and an 8-bit data bus.
* - ``pinctrl-0``
- ``phandles``
- .. code-block:: none
Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.
* - ``pinctrl-1``
- ``phandles``
- .. code-block:: none
Pin configuration/s for the second state. See pinctrl-0.
* - ``pinctrl-2``
- ``phandles``
- .. code-block:: none
Pin configuration/s for the third state. See pinctrl-0.
* - ``pinctrl-3``
- ``phandles``
- .. code-block:: none
Pin configuration/s for the fourth state. See pinctrl-0.
* - ``pinctrl-4``
- ``phandles``
- .. code-block:: none
Pin configuration/s for the fifth state. See pinctrl-0.
* - ``pinctrl-names``
- ``string-array``
- .. code-block:: none
Names for the provided states. The number of names needs to match the
number of states.
.. 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 "ti,am654-sdhci" compatible.
.. list-table::
:widths: 1 1 4
:header-rows: 1
* - Name
- Type
- Details
* - ``reg``
- ``array``
- .. code-block:: none
Information used to address the device. The value is specific to
the device (i.e. is different depending on the compatible
property).
The "reg" property is typically a sequence of (address, length) pairs.
Each pair is called a "register block". Values are
conventionally written in hex.
For details, see "2.3.6 reg" in Devicetree Specification v0.4.
This property is **required**.
See :ref:`zephyr:dt-important-props` for more information.
* - ``status``
- ``string``
- .. code-block:: none
Indicates the operational status of the hardware or other
resource that the node represents. In particular:
- "okay" means the resource is operational and, for example,
can be used by device drivers
- "disabled" means the resource is not operational and the system
should treat it as if it is not present
For details, see "2.3.4 status" in Devicetree Specification v0.4.
Legal values: ``okay``, ``disabled``, ``reserved``, ``fail``, ``fail-sss``
See :ref:`zephyr:dt-important-props` for more information.
* - ``compatible``
- ``string-array``
- .. code-block:: none
This property is a list of strings that essentially define what
type of hardware or other resource this devicetree node
represents. Each device driver checks for specific compatible
property values to find the devicetree nodes that represent
resources that the driver should manage.
The recommended format is "vendor,device", The "vendor" part is
an abbreviated name of the vendor. The "device" is usually from
the datasheet.
The compatible property can have multiple values, ordered from
most- to least-specific. Having additional values is useful when the
device is a specific instance of a more general family, to allow the
system to match the most specific driver available.
For details, see "2.3.1 compatible" in Devicetree Specification v0.4.
This property is **required**.
See :ref:`zephyr:dt-important-props` for more information.
* - ``reg-names``
- ``string-array``
- .. code-block:: none
Optional names given to each register block in the "reg" property.
For example:
/ {
soc {
#address-cells = <1>;
#size-cells = <1>;
uart@1000 {
reg = <0x1000 0x2000>, <0x3000 0x4000>;
reg-names = "foo", "bar";
};
};
};
The uart@1000 node has two register blocks:
- one with base address 0x1000, size 0x2000, and name "foo"
- another with base address 0x3000, size 0x4000, and name "bar"
* - ``ranges``
- ``compound``
- .. code-block:: none
Information used to define a mapping (or translation) between the address
space of a bus (the "child address space") and the address space of the
bus node's parent (the "parent address space").
The "ranges" property is typically empty, or a sequence of triplets
(child bus address, parent bus address, length).
If the "ranges" property is empty, it specifies that the parent and child
address spaces are identical and no address translation is required.
If the "ranges" property is not present in a bus node, it is assumed that
no mapping exists between children of the node and the parent address space.
For details, see "2.3.8 ranges" in Devicetree Specification v0.4.
* - ``interrupts``
- ``array``
- .. code-block:: none
Information about interrupts generated by the device, encoded as an array
of one or more interrupt specifiers. The format of the data in this property
varies by where the device appears in the interrupt tree. Devices with the same
"interrupt-parent" will use the same format in their interrupts properties.
For details, see "2.4 Interrupts and Interrupt Mapping" in
Devicetree Specification v0.4.
See :ref:`zephyr:dt-important-props` for more information.
* - ``interrupts-extended``
- ``compound``
- .. code-block:: none
Extended interrupt specifier for device, used as an alternative to
the "interrupts" property.
For details, see "2.4 Interrupts and Interrupt Mapping" in
Devicetree Specification v0.4.
* - ``interrupt-names``
- ``string-array``
- .. code-block:: none
Optional names given to each interrupt generated by a device.
The interrupts themselves are defined in either "interrupts" or
"interrupts-extended" properties.
For details, see "2.4 Interrupts and Interrupt Mapping" in
Devicetree Specification v0.4.
* - ``interrupt-parent``
- ``phandle``
- .. code-block:: none
If present, this refers to the node which handles interrupts generated
by this device.
For details, see "2.4 Interrupts and Interrupt Mapping" in
Devicetree Specification v0.4.
* - ``label``
- ``string``
- .. code-block:: none
Human readable string describing the device. Use of this property is
deprecated except as needed on a case-by-case basis.
For details, see "4.1.2 Miscellaneous Properties" in Devicetree
Specification v0.4.
See :ref:`zephyr:dt-important-props` for more information.
* - ``clocks``
- ``phandle-array``
- .. code-block:: none
Information about the device's clock providers. In general, this property
should follow conventions established in the dt-schema binding:
https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/clock/clock.yaml
* - ``clock-names``
- ``string-array``
- .. code-block:: none
Optional names given to each clock provider in the "clocks" property.
* - ``#address-cells``
- ``int``
- .. code-block:: none
This property encodes the number of cells used by address fields
in "reg" properties in this node's children.
For details, see "2.3.5 #address-cells and #size-cells" in Devicetree
Specification v0.4.
* - ``#size-cells``
- ``int``
- .. code-block:: none
This property encodes the number of cells used by size fields in
"reg" properties in this node's children.
For details, see "2.3.5 #address-cells and #size-cells" in Devicetree
Specification v0.4.
* - ``dma-coherent``
- ``boolean``
- .. code-block:: none
Indicates that the device is capable of coherent DMA operations.
For details, see "2.3.10 dma-coherent" in Devicetree Specification v0.4.
* - ``dmas``
- ``phandle-array``
- .. code-block:: none
DMA channel specifiers relevant to the device.
* - ``dma-names``
- ``string-array``
- .. code-block:: none
Optional names given to the DMA channel specifiers in the "dmas" property.
* - ``io-channels``
- ``phandle-array``
- .. code-block:: none
IO channel specifiers relevant to the device.
* - ``io-channel-names``
- ``string-array``
- .. code-block:: none
Optional names given to the IO channel specifiers in the "io-channels" property.
* - ``mboxes``
- ``phandle-array``
- .. code-block:: none
Mailbox / IPM channel specifiers relevant to the device.
* - ``mbox-names``
- ``string-array``
- .. code-block:: none
Optional names given to the mbox specifiers in the "mboxes" property.
* - ``power-domains``
- ``phandle-array``
- .. code-block:: none
Power domain specifiers relevant to the device.
* - ``power-domain-names``
- ``string-array``
- .. code-block:: none
Optional names given to the power domain specifiers in the "power-domains" property.
* - ``#power-domain-cells``
- ``int``
- .. code-block:: none
Number of cells in power-domains property
* - ``hwlocks``
- ``phandle-array``
- .. code-block:: none
HW spinlock id relevant to the device.
* - ``hwlock-names``
- ``string-array``
- .. code-block:: none
Optional names given to the hwlock specifiers in the "hwlocks" 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.