Cyclone5 SoC: U-Boot not detecting USB-HUB

Hi AlanCLTan​ 

sorry, I was out for some days and didn't have the chance yet, but thanks a lot for your insights and ideas.

What I see is the following:

usb-phy0 is already defined in the base socfpga.dtsi file, as:

usbphy0: usbphy {
#phy-cells = <0>;
compatible = "usb-nop-xceiv";
status = "okay";
};

It is lacking the reset-gpios entry, what I think I could overlay on my dtsi file.

usb1 refers to the phy, but using a different atttribute (phys instead of usb-phy as you suggested):

usb0: usb@ffb00000 {
compatible = "snps,dwc2";
reg = <0xffb00000 0xffff>;
interrupts = <0 125 4>;
clocks = <&usb_mp_clk>;
clock-names = "otg";
resets = <&rst USB0_RESET>;
reset-names = "dwc2";
phys = <&usbphy0>;
phy-names = "usb2-phy";
status = "disabled";
};

Could that make a difference?

Regarding your suggested kernel configuration, does this apply to the u-boot defconfig? So far I'm trying to have a working u-boot, but I don't see all those options in my current .config, either set or not set:

• CONFIG_USB_DWC2. That is set.
• CONFIG_USB_OHCI_HCD. That is not set.
• CONFIG_PHY. Not in u-boot .config
• CONFIG_NOP_USB_XCEIV. Not in u-boot .config, but there is a CONFIG_NOP_PHY.

I will play a bit with these ideas to see if I get a working configuration