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i.mx6Q/DL, is there a way to change PCIE TX pin drive strength?

Question asked by Wally Yeh on Oct 26, 2015
Latest reply on Nov 5, 2015 by Wally Yeh

Hi, guys:

    Our boss just replace i.mx6Q with i.mx6DL for our product(using SDK_3.0.35-4.1.0), and it was almost a success. but we got some defect product which always hang up at PCIe initialization.

our HW team told me the signal on PCIe TX pin of the i.mx6DL is too high; and i.mx6Q seems have no this issue.

 

I just check the kernel source to see if there a way to change the resistance about the PCIe TX pin; but I can't find it,

I can only change all pins defined at kernel_3.0.35/arch/arm/plat-mxc/include/mach/iomux-mx6dl.h, and there seems no PCIe TX pin define here.

 

    Any suggestion would be help, thanks.

 

Wally

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