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Altera_Forum
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11 years ago

Getting Slow Frame Rate using Frame Buffer Driver on Cyclone IV Board

Hi, I am developing Frame Buffer based Video Driver to Play upto 720P Resolution Video on Cyclone IV board in Linux Platform. I have used concept of Linux PCI Driver as well as Virtual Frame ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Hi,

I have verified that PCIe to DDR2 Memory Write Operation is getting some slow by following way from my Linux Frame Buffer Driver.

I have assigned DDR2 Memory address as my System RAM's Address insetad of actual PCIe DDR2 address and started to dump same resolution on frame buffer device which was completed within proper time.

So, It seems like PCIe to DDR2 Memory write openrations becomes slow on high resolution video in my system.

Regards,

Ritesh Prajapati