[U-Boot] PPC440EP USB1.1 Host Error

[Remy Bohmer]

Hello Steven,

> I have a ploblem in using usb 1.1 host , in my board(has not CPLD)
> I wanna using USB1.1 Host , and not using USB2.2
> But usb1.1 Host is not working , when usb device is connected Kernel prints
> -62 err messages
> How can I Slove it?

Sorry for the late reply.

Looking at the logging, it seems that you are using the common OHCI
driver. The logging I see appears familiar to me.
It happens sometimes on some controllers (I do not expect it is USB
stick related). It looks a bit like a startup issue, on our CPUs it
occurs very infrequently and the problem is usually gone after a
single reset. I still want to figure why it is happening sometimes.

Another option, which is more likely here, because the Linux kernel
also has the same problem, is that the board specific initialisation
is not entirely correct. Similar errors are also seen when the 48 MHz
is not available (or configured wrong, at wrong frequency) for the
OHCI controller. Usually U-boot needs to set up board timing, PLLs,
etc. correct, the Linux kernel can depend on the bootloader
configuration, but that might be different per architecture.

Kind Regards,

Remy


>
> Best Regards.
> Steven
> ____________________________________________________________________________
> _____________________________
> Hit any key to stop autoboot:  0
> => usb start
> (Re)start USB...
> USB:   USB 1.1 Device init
> scanning bus for devices... ERROR:  USB-error: DEVICENOTRESPONDING: Device
> did not respond to token d
> not provide a handshake (OUT) (5)
> ERROR: USB-error: DEVICENOTRESPONDING: Device did not respond to token (IN)
> or did
> not provide a handshake (OUT) (5)
> 2 USB Device(s) found
>       scanning bus for storage devices... 0 Storage Device(s) found
>
>
>
>>>>> Kernel Error Message
> # usb 1-1: new low speed USB device using ppc-soc-ohci and address 2
> usb 1-1: device descriptor read/64, error -62
> usb 1-1: device descriptor read/64, error -62
> usb 1-1: new low speed USB device using ppc-soc-ohci and address 3
> usb 1-1: device descriptor read/64, error -62
> usb 1-1: device descriptor read/64, error -62
> usb 1-1: new low speed USB device using ppc-soc-ohci and address 4
> usb 1-1: device not accepting address 4, error -62
> usb 1-1: new low speed USB device using ppc-soc-ohci and address 5
> usb 1-1: device not accepting address 5, error -62
>
> ____________________________________________________________________________
> _____________________________
>
>
> /* It's my test code , but not working
> int board_early_init_f(void)
> {
> ...
>
> #if 1 //steven added
>        //mfsdr(sdr_usb0, sdr0_usb0);
>        //sdr0_usb0 = sdr0_usb0 &~SDR0_USB0_USB_DEVSEL_MASK;
>        //sdr0_usb0 = sdr0_usb0 | SDR0_USB0_USB11D_DEVSEL;
>        //mtsdr(sdr_usb0, sdr0_usb0);
>
>        mfsdr(sdr_usb0, sdr0_usb0);
>        sdr0_usb0 = sdr0_usb0 &~SDR0_USB0_LEEN_MASK;
>        sdr0_usb0 = sdr0_usb0 | SDR0_USB0_LEEN_ENABLE;
>        mtsdr(sdr_usb0, sdr0_usb0);
> #endif
>
>
>
> }
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