The purpose of this page is to describe the Linux V4L2 driver for Xilinx RGB to YUV(RGB2YUV) soft IP.

Overview

The Linux RGB2YUV driver (xilinx-rgb2yuv.c) based on the V4L2 framework creates a subdev node(/dev/v4l-subdev*) which can be used to configure the RGB2YUV IP core. The general description of V4L2 framework is documented here, v4l2-framework.txt.

Linux Kernel defconfig

CONFIG_VIDEO_XILINX_RGB2YUV and CONFIG_VIDEO_XILINX should be enabled.

Device tree binding

The dts node should be defined with correct hardware configuration. How to define the node is documented here, xlnx,axi-rgb2yuv.txt.

Supporting features

Following RGB2YUV features are supported including:
  • Converting RGB888 into YUV444 format
  • Configuring clipping/clamping values of Y, U, or V
  • Configuring offset of Y, U, or V
  • Programming A, B, C, D coefficients

Work to be done

  • Improve coefficients programming with V4L2 matrix update API

Related Links