raspberrypi,csi-connector

Vendor: Raspberry Pi Foundation

Description

GPIO pins exposed on the Raspberry Pi CSI Camera connector

There are 2 variants of the Raspberry Pi CSI camera connector. Either 15-pin
or 22-pin. Here only GPIO provided by those connectors are abstracted since
others pins are directly connected to CSI PHY.
For reference, pinout of 15-pin and 22-pin connectors are references below.
In this gpio nexus, only GPIOs are represented and should be described in
the following way, allowing to have a single compatible for both 15-pin
and 22-pin connectors and also allowing to deal with 15-pin to 22-pin
conversion cables.

Nexus mapping:
  1   IO0      pin 11 (15-pin based) / pin 17 (22-pin based)
  2   IO1      pin 12 (15-pin based) / pin 18 (22-pin based)
  3   I2C_SCL  pin 13 (15-pin based) / pin 20 (22-pin based)
  4   I2C_SDA  pin 14 (15-pin based) / pin 21 (22-pin based)

For reference only, Raspberry 15-pin Connector layout:
  1   GND
  2   CSI_D0_N
  3   CSI_D0_P
  4   GND
  5   CSI_D1_N
  6   CSI_D1_P
  7   GND
  8   CSI_CK_N
  9   CSI_CK_P
  10  GND
  11  IO0
  12  IO1
  13  I2C_SCL
  14  I2C_SDA
  15  VCC (3v3)

For reference only, Raspberry 22-pin Connector layout:

  1  GND
  2  CSI_D0_N
  3  CSI_D0_P
  4  GND
  5  CSI_D1_N
  6  CSI_D1_P
  7  GND
  8  CSI_CK_N
  9  CSI_CK_P
  10 GND
  11 CSI_D2_N
  12 CSI_D2_P
  13 GND
  14 CSI_D3_N
  15 CSI_D3_P
  16 GND
  17 IO0
  18 IO1
  19 GND
  20 I2C_SCL
  21 I2C_SDA
  22 VCC (3v3)

Properties

Node specific properties

Properties not inherited from the base binding file.

Name

Type

Details

gpio-map

compound

This property is required.

gpio-map-mask

compound

gpio-map-pass-thru

compound

#gpio-cells

int

Number of items to expect in a GPIO specifier

This property is required.

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 “raspberrypi,csi-connector” compatible.

Name

Type

Details

status

string

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

See Important properties for more information.

compatible

string-array

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 Important properties for more information.

reg

array

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.

See Important properties for more information.

reg-names

string-array

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"

interrupts

array

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 Important properties for more information.

interrupts-extended

compound

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

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

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

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 Important properties for more information.

clocks

phandle-array

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

Optional names given to each clock provider in the "clocks" property.

#address-cells

int

This property encodes the number of <u32> 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

This property encodes the number of <u32> 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.

dmas

phandle-array

DMA channel specifiers relevant to the device.

dma-names

string-array

Optional names given to the DMA channel specifiers in the "dmas" property.

io-channels

phandle-array

IO channel specifiers relevant to the device.

io-channel-names

string-array

Optional names given to the IO channel specifiers in the "io-channels" property.

mboxes

phandle-array

Mailbox / IPM channel specifiers relevant to the device.

mbox-names

string-array

Optional names given to the mbox specifiers in the "mboxes" property.

power-domains

phandle-array

Power domain specifiers relevant to the device.

power-domain-names

string-array

Optional names given to the power domain specifiers in the "power-domains" property.

#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.