st,stm32-dcmi

Vendor: STMicroelectronics N.V.

Note

An implementation of a driver matching this compatible is available in drivers/video/video_stm32_dcmi.c.

Description

STMicroelectronics STM32 Digital Camera Memory Interface (DCMI).
Example of node configuration at board level:

&dcmi {
  status = "okay";
  sensor = <&ov2640>;
  pinctrl-0 = <&dcmi_hsync_pa4 &dcmi_pixclk_pa6 &dcmi_vsync_pb7
              &dcmi_d0_pc6 &dcmi_d1_pc7 &dcmi_d2_pe0 &dcmi_d3_pe1
              &dcmi_d4_pe4 &dcmi_d5_pd3 &dcmi_d6_pe5 &dcmi_d7_pe6>;
  pinctrl-names = "default";
  bus-width = <8>;
  hsync-active = <0>;
  vsync-active = <0>;
  pixelclk-active = <1>;
  capture-rate = <1>;
  dmas = <&dma1 0 75 (STM32_DMA_PERIPH_TO_MEMORY | STM32_DMA_PERIPH_NO_INC |
          STM32_DMA_MEM_INC | STM32_DMA_PERIPH_8BITS | STM32_DMA_MEM_32BITS |
          STM32_DMA_PRIORITY_HIGH) STM32_DMA_FIFO_1_4>;

  port {
    dcmi_ep_in: endpoint {
      remote-endpoint = <&ov2640_ep_out>;
    };
  };
};

Properties

Node specific properties

Properties not inherited from the base binding file.

Name

Type

Details

sensor

phandle

 
phandle of connected sensor device

This property is required.

bus-width

int

 
Number of data lines actively used, valid for the parallel busses.

This property is required.

Default value: 8

Legal values: 8, 10, 12, 14

hsync-active

int

 
Polarity of horizontal synchronization (DCMI_HSYNC_Polarity).
0 Horizontal synchronization active Low.
1 Horizontal synchronization active High.

For example, if DCMI_HSYNC_Polarity is programmed active high:
When HSYNC is low, the data is valid.
When HSYNC is high, the data is not valid (horizontal blanking).

This property is required.

Legal values: 0, 1

vsync-active

int

 
Polarity of vertical synchronization (DCMI_VSYNC_Polarity).
0 Vertical synchronization active Low.
1 Vertical synchronization active High.

For example, if DCMI_VSYNC_Polarity is programmed active high:
When VSYNC is low, the data is valid.
When VSYNC is high, the data is not valid (vertical blanking).

This property is required.

Legal values: 0, 1

pixelclk-active

int

 
Polarity of pixel clock (DCMI_PIXCK_Polarity).
0 Pixel clock active on Falling edge.
1 Pixel clock active on Rising edge.

This property is required.

Legal values: 0, 1

capture-rate

int

 
The DCMI can capture all frames or alternate frames. If it is not specified,
the default is all frames.
1 Capture all frames.
2 Capture alternate frames.
4 Capture one frame every 4 frames.

Default value: 1

Legal values: 1, 2, 4

pinctrl-0

phandles

 
Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.

pinctrl-1

phandles

 
Pin configuration/s for the second state. See pinctrl-0.

pinctrl-2

phandles

 
Pin configuration/s for the third state. See pinctrl-0.

pinctrl-3

phandles

 
Pin configuration/s for the fourth state. See pinctrl-0.

pinctrl-4

phandles

 
Pin configuration/s for the fifth state. See pinctrl-0.

pinctrl-names

string-array

 
Names for the provided states. The number of names needs to match the
number of states.

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 “st,stm32-dcmi” compatible.

Name

Type

Details

interrupts

array

 
interrupts for device

This property is required.

See Important properties for more information.

dmas

phandle-array

 
phandle of DMA controller. The DMA controller should be compatible with
DMA channel specifier. Specifies a phandle reference to the dma controller,
the channel number, the slot number, channel configuration and finally features.

dmas = <&dma1 0 75 (STM32_DMA_PERIPH_TO_MEMORY | STM32_DMA_PERIPH_NO_INC |
        STM32_DMA_MEM_INC | STM32_DMA_PERIPH_8BITS | STM32_DMA_MEM_32BITS |
        STM32_DMA_PRIORITY_HIGH) STM32_DMA_FIFO_1_4>;

This property is required.

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

array

 
register space

See Important properties for more information.

reg-names

string-array

 
name of each register space

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

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.