PORTSC_PFSC is not set on entering host mode which means the USB OTG controller will attempt to enumerate USB devices at high speed even when the CI_HDRC_FORCE_FULLSPEED flag is set in the platform data. This patch ensures it is set right before host mode operations begin if needed. Signed-off-by: Daniel Tang <dt.tangr@xxxxxxxxx> --- drivers/usb/chipidea/host.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index c1694cf..f106d25 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -132,6 +132,9 @@ static int host_start(struct ci_hdrc *ci) if (ci->platdata->flags & CI_HDRC_DISABLE_STREAMING) hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS); + if (ci->platdata->flags & CI_HDRC_FORCE_FULLSPEED) + hw_write(ci, OP_PORTSC, PORTSC_PFSC, PORTSC_PFSC); + return ret; put_hcd: -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
