st,stm32-dcmi
Vendor: STMicroelectronics
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
Properties not inherited from the base binding file.
Name |
Type |
Details |
|---|---|---|
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phandle of connected sensor device
This property is required. |
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Number of data lines actively used, valid for the parallel busses.
This property is required. Default value: Legal values: |
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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: |
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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: |
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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: |
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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: Legal values: |
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Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.
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Pin configuration/s for the second state. See pinctrl-0.
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Pin configuration/s for the third state. See pinctrl-0.
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Pin configuration/s for the fourth state. See pinctrl-0.
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Pin configuration/s for the fifth state. See pinctrl-0.
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Names for the provided states. The number of names needs to match the
number of states.
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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 “st,stm32-dcmi” compatible.
Name |
Type |
Details |
|---|---|---|
|
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interrupts for device
This property is required. See Important properties for more information. |
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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. |
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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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register space
See Important properties for more information. |
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name of each register space
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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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Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
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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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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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