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

Node specific properties

Properties not inherited from the base binding file.

Name

Type

Details

clock-frequency

int

 
clock-frequency for SDHC

power_delay_ms

int

 
delay required to switch on the SDHC

This property is required.

max-current-330

int

 
Max drive current in mA at 3.3V. A value of zero indicates no maximum
is specified by the driver.

max-current-300

int

 
Max drive current in mA at 3.0V. A value of zero indicates no maximum
is specified by the driver.

max-current-180

int

 
Max drive current in mA at 1.8V. A value of zero indicates no maximum
is specified by the driver.

max-bus-freq

int

 
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

 
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

 
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

 
The host controller supports HS200 at 1.8V

mmc-hs400-1_8v

boolean

 
The host controller supports HS400 at 1.8V

resets

phandle-array

 
Reset information

reset-names

string-array

 
Name of each reset

Deprecated node specific properties

Deprecated properties not inherited from the base binding file.

(None)

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 “cdns,sdhc” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

See Important properties for more information.

status

string

 
indicates the operational status of a device

Legal values: 'ok', 'okay', 'disabled', 'reserved', 'fail', 'fail-sss'

See Important properties for more information.

compatible

string-array

 
compatible strings

This property is required.

See Important properties for more information.

reg-names

string-array

 
name of each register space

interrupts

array

 
interrupts for device

See Important properties for more information.

interrupts-extended

compound

 
extended interrupt specifier for device

interrupt-names

string-array

 
name of each interrupt

interrupt-parent

phandle

 
phandle to interrupt controller node

label

string

 
Human readable string describing the device (used as device_get_binding() argument)

See Important properties for more information.

This property is deprecated.

clocks

phandle-array

 
Clock gate information

clock-names

string-array

 
name of each clock

#address-cells

int

 
number of address cells in reg property

#size-cells

int

 
number of size cells in reg property

dmas

phandle-array

 
DMA channels specifiers

dma-names

string-array

 
Provided names of DMA channel specifiers

io-channels

phandle-array

 
IO channels specifiers

io-channel-names

string-array

 
Provided names of IO channel specifiers

mboxes

phandle-array

 
mailbox / IPM channels specifiers

mbox-names

string-array

 
Provided names of mailbox / IPM channel specifiers

power-domains

phandle-array

 
Power domain specifiers

power-domain-names

string-array

 
Provided names of power domain specifiers

#power-domain-cells

int

 
Number of cells in power-domains property

zephyr,deferred-init

boolean

 
Do not initialize device automatically on boot. Device should be manually
initialized using device_init().

wakeup-source

boolean

 
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

 
Automatically configure the device for runtime power management after the
init function runs.

zephyr,disabling-power-states

phandles

 
List of power states that will disable this device power.