usbh2: device descriptor read/64, error -71

[vishnu_motghare]

Hi,

We have a custom board based on IMX.6 Freescale SoC. The device has a LAN9730 HSIC USB to ethernet controller connected to USBH2 of IMX.6 processor.  The DATA line is connected to RGMII_TXC pin & STOBE line is connected to RGMII_TX_CTL pin.

I'm using the "rel_imx_5.4.70_2.3.7" kernel version & following is my DTS configuration

usbh2 {
          pinctrl_usbh2_1: usbh2grp-1 {
              fsl,pins = <
                  MX6QDL_PAD_RGMII_TXC__USB_H2_DATA       0x13030
                  MX6QDL_PAD_RGMII_TX_CTL__USB_H2_STROBE  0x13030
              >;
          };
          pinctrl_usbh2_2: usbh2grp-2 {
              fsl,pins = <
                 MX6QDL_PAD_RGMII_TXC__USB_H2_DATA       0x13030
                 MX6QDL_PAD_RGMII_TX_CTL__USB_H2_STROBE  0x17030
              >;
          };
};

&usbh2 {
    pinctrl-names = "idle", "active";
    pinctrl-0 = <&pinctrl_usbh2_1>;
    pinctrl-1 = <&pinctrl_usbh2_2>;
    status = "okay";
};

But USB enumeration fails with error -71. 

[    2.936707] imx_usb 2184400.usb: No over current polarity defined
[    2.943332] imx_usb 2184400.usb: 2184400.usb supply vbus not found, using dummy regulator
[    2.997053] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.04
[    3.005439] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.012761] usb usb2: Product: EHCI Host Controller
[    3.017677] usb usb2: Manufacturer: Linux 5.4.70-dirty ehci_hcd
[    3.023689] usb usb2: SerialNumber: ci_hdrc.1
[    3.291087] usb 2-1: new high-speed USB device number 2 using ci_hdrc
[    3.410432] usbcore: registered new interface driver usbhid
[    3.416442] usbhid: USB HID core driver
[    3.471091] usb 2-1: device no response, device descriptor read/64, error -71
[    3.761847] usb 2-1: device no response, device descriptor read/64, error -71
[    4.030978] usb 2-1: new high-speed USB device number 3 using ci_hdrc
[    4.222852] usb 2-1: device no response, device descriptor read/64, error -71
[    4.500983] usb 2-1: device no response, device descriptor read/64, error -71
[    4.631182] usb usb2-port1: attempt power cycle
[    5.121689] usb 2-1: new high-speed USB device number 4 using ci_hdrc
[    5.571209] usb 2-1: device not accepting address 4, error -71
[    5.721762] usb 2-1: new high-speed USB device number 5 using ci_hdrc
[    6.171139] usb 2-1: device not accepting address 5, error -71
[    6.181358] usb usb2-port1: unable to enumerate USB device

I've also tried with the older IMX kernel "rel_imx_4.14.98_2.0.0_ga" & also tried the 5.15 mainline kernel & I get exact same error with all. I'm not sure why the enumeration is falling. Am I missing any settings in the device tree or in the kernel config? Any help is appreciated. 

Thanks,

Vishnu

[Rita_Wang]

You can refer to https://community.nxp.com/t5/i-MX-Processors/USB-silently-hangs-on-imx6q-in-presence-of-transmission...

[vishnu_motghare]

@Rita_Wang . Thanks for your reply. I've tried following command mentioned in the post but It did not work. Getting same error

# echo ci_hdrc.1 > /sys/bus/platform/drivers/ci_hdrc/unbind
ci_hdrc ci_hdrc.1: remove, state 4
usb usb2: USB disconnect, device number 1
ci_hdrc ci_hdrc.1: USB bus 2 deregistered

# echo ci_hdrc.1 > /sys/bus/platform/drivers/ci_hdrc/bind
ci_hdrc ci_hdrc.1: EHCI Host Controller
ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 2

ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.15
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: Product: EHCI Host Controller
usb usb2: Manufacturer: Linux 5.15.79-rt54-g65e3421f494d-dirty ehci_hcd
usb usb2: SerialNumber: ci_hdrc.1
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
usb 2-1: new high-speed USB device number 2 using ci_hdrc
usb 2-1: device descriptor read/64, error -71
usb 2-1: device descriptor read/64, error -71
usb 2-1: new high-speed USB device number 3 using ci_hdrc
usb 2-1: device descriptor read/64, error -71
usb 2-1: device descriptor read/64, error -71
usb usb2-port1: attempt power cycle
usb 2-1: new high-speed USB device number 4 using ci_hdrc
usb 2-1: device not accepting address 4, error -71
usb 2-1: new high-speed USB device number 5 using ci_hdrc
usb 2-1: device not accepting address 5, error -71
usb usb2-port1: unable to enumerate USB device