The purpose of this page is to describe the Linux V4L2 driver for Xilinx Scaler(SCALER) soft IP.
NOTE:  This IP has been superseded by the Video Processing Subsystem and users should look at the Xilinx V4L2 VPSS Scaler driver page for the latest driver information.

Overview

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

Linux Kernel defconfig

CONFIG_VIDEO_XILINX_SCALER 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-scaler.txt.

Supporting features

Following SCALER features are supported including:

• Scaling using the Lanczos algorithm to calculate generic coefficients
• Cropping region

Work to be done

• Support to program custom coefficients