configure usb phy transmitter control linux kernel

[hchristo]

I am trying to figure out how to set the USB PHY Tx Control Reg via the device tree. If I have to do from userspace, I have to (ideas on this are appreciated also) but I think I should be able to define a register address (0x020CA010 for the i.MX6) and value to be loaded (0xC).

The POR default value for D_CAL may be insufficient to allow the on-chip PHY to drive a signal w/ all cables.

Any assistance is appreciated.

[igorpadykov]

Hi Harland

one can look at tx-d-cal optional property in

linux/Documentation/devicetree/bindings/usb/mxs-phy.txt

mxs-phy.txt\usb\bindings\devicetree\Documentation - linux-imx - i.MX Linux kernel 

Best regards
igor
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