cdns,sdhc
Vendor: Cadence Design Systems Inc.
Note
An implementation of a driver matching this compatible is available in drivers/sdhc/sdhc_cdns.c.
Description
These nodes are “sd” bus nodes.
Cadence SDHC Controller node
Properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
|---|---|---|
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clock-frequency for SDHC
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delay required to switch on the SDHC
This property is required. |
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Max drive current in mA at 3.3V. A value of zero indicates no maximum
is specified by the driver.
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Max drive current in mA at 3.0V. A value of zero indicates no maximum
is specified by the driver.
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Max drive current in mA at 1.8V. A value of zero indicates no maximum
is specified by the driver.
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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: |
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Minimum bus frequency for SD card. This should be the frequency that
cards first will select when attached to the SDHC bus
Default value: |
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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: |
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The host controller supports HS200 at 1.8V
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The host controller supports HS400 at 1.8V
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Reset information
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Name of each reset
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Deprecated properties not inherited from the base binding file.
(None)
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 “cdns,sdhc” compatible.
Name |
Type |
Details |
|---|---|---|
|
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register space
This property is required. See Important properties for more information. |
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indicates the operational status of a device
Legal values: See Important properties for more information. |
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compatible strings
This property is required. See Important properties for more information. |
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name of each register space
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interrupts for device
See Important properties for more information. |
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extended interrupt specifier for device
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name of each interrupt
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phandle to interrupt controller node
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No description provided for this label
See Important properties for more information. |
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Clock gate information
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name of each clock
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number of address cells in reg property
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number of size cells in reg property
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DMA channels specifiers
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Provided names of DMA channel specifiers
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IO channels specifiers
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Provided names of IO channel specifiers
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mailbox / IPM channels specifiers
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Provided names of mailbox / IPM channel specifiers
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Power domain specifiers
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Provided names of power domain specifiers
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Number of cells in power-domains property
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Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
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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.
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Automatically configure the device for runtime power management after the
init function runs.
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List of power states that will disable this device power.
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