Hello,
Currently I'm writing AM572x USB2 driver for vxWorks. AM572x USB1 works on vxWorks. But system always crash if read AM572x USB2 registers (For example, read USB_XHCI_HCSPARAMS1 at 0x488d0004) . I think the root cause maybe clocks. I checked some registers as below:
CM_L3INIT_USB_OTG_SS1_CLKCTRL (0x4A0093f0) = 0x101 -USB1
CM_L3INIT_USB_OTG_SS2_CLKCTRL (0x4A009340) = 0x40101 -USB2
USB2 clocks seem enabled. Frequency may be wrong?
l3init_480m_dclk_div: From name it should be 480MHz, but actually it is 960MHz.
l3init_60m_fclk: From name it should be 60MHz, but actually it is 120MHz.
My questios: How many clocks are needed for USB2? What is their frequencies? Which registers need check to confirm the clocks?
Thanks,
Miles
