Hi Felipe,
> From: Felipe Balbi
> Sent: Thursday, April 21, 2016 7:05 PM
>
> Yoshihiro Shimoda <[email protected]> writes:
>
> > If kernel configuration is CONFIG_USB_XHCI_PLATFORM=y and
> > CONFIG_USB_XHCI_RCAR is not set, R-Car Gen2/3 will cause long wait
> > in xhci_reset() because such SoCs need specific initialization.
>
> where is the delay coming from exactly ?
The delay is coming from the following code:
ret = xhci_handshake(&xhci->op_regs->command,
CMD_RESET, 0, 10 * 1000 * 1000);
if (ret)
return ret;
And, kernel log is the following:
[ 1.565605] xhci-hcd ee000000.usb: xHCI Host Controller
[ 1.570636] xhci-hcd ee000000.usb: new USB bus registered, assigned bus
number 5
[ 22.270160] xhci-hcd ee000000.usb: can't setup: -110
[ 22.274931] xhci-hcd ee000000.usb: USB bus 5 deregistered
[ 22.280158] xhci-hcd: probe of ee000000.usb failed with error -110
The timestamp is strange to me. But, logs of R-Car H3 (ES1.0) and R-Car H2 were
the same.
Should I revise the commit log in detail?
Best regards,
Yoshihiro Shimoda
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