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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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  • 0 in reply to Former Member

    Thanks for answer.
    I decompile DTB on first partition of SD using DTC -I dtb -O dts -o devicetree.dts devicetree.dtb. I add UART0 and I2C0 in to DTS. Last step is compiling DTB using DTC -I dts -O dtb -o devicetree.dtb devicetree.dts. Uart works fine but I2C does not.

    Two possible reasons:
    1. Wrong entry for I2C0 in DTS
    2. Driver for I2C not found or does not exist in Xillinux.

    I am linux newbie and I am not sure how to verify this.
    I tried list modules by lsmod and modprobe -l. But nothing look like I2C driver. I thing that I2C driver is not instaled. I believe that it is not need recompile entire kernel. I read in  "Getting started with Xillybus on a Linux host" about compiling single module respective specified folder. This is what I tryed, but no success yet.

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