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PS I2C on Xillinux

Former Member

Hi,
I use Xillinux and I need I2C for my application.
I open system.xmp, enable I2C 0 in PS and configure to use MIO 10..11. I folow instuctions in Getting started with Xillinux for Zynq-7000 EPP 3.3, 3.5 and 3.6. New bitstreem is identical to origin. I thing that bitstreem must be little different.
What I do wrong?

Thanks

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    There are two ways to come around this:

    (1) If you don't need the card's sound capability, and you're fine with using PL pins from the chip, you may "steal" the I2C interface used to program the sound chip. Just reLOC the relevant pins to your application logic, and disable the sound subsystem as described in the Getting Started Guide for Linux.

    (2) If you want the native I2C Linux driver to run the relevant PL lines, you'll need to modify the DTS file, and compile it into a DTB, and then copy it to the SD card's first partition. The entry you need to add tells the kernel that an I2C hardware element is available, and also its attributes. I've never done this, but this is the flow. There shouldn't be a need to recompile the kernel, I believe.

       Eli

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