Freescale Semiconductor i.MX 6SoloLite Linux, Справочное руководство

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Chapter 12
Camera Sensor Interface (CSI) Driver
The CSI driver enables the i.MX device to directly connect to external CMOS sensors
and CCIR656 video sources. The CSI and sensor drivers are implemented in the Video
for Linux Two (V4L2) driver framework. It consists of the image capture driver and the
video output driver.
12.1 Hardware Operation
The CSI driver configures and operates with the hardware registers for the CSI module. It
provides:
• Configurable interface logic to support most commonly available CMOS sensors.
• Full control of 8-bit/pixel, 10-bit/pixel or 16-bit/pixel data format to 32-bit receive
FIFO packing.
• 128X32 FIFO to store received image pixel data.
• Receive FIFO overrun protection mechanism.
• Embedded DMA controllers to transfer data from receive FIFO or statistic FIFO
through AHB bus.
• Support for double buffering two frames in the external memory.
• Single interrupt source to interrupt controller from maskable interrupt sources: Start
of Frame, End of Frame, and so on.
• Configurable master clock frequency output to sensor.
For more information, see the CSI chapter in the i.MX 6SoloLite Multimedia Applications
Processor Reference Manual
.
12.2 Software Operation
This section includes the following:
i.MX 6SoloLite Linux Reference Manual, Rev. L3.0.35_4.1.0, 09/2013
Freescale Semiconductor, Inc. 93