Hi Peter, > All imx usb controller's non core registers uses the same clock gate with > core registers, the usbmisc_imx is the library for imx glue driver, the > glue keeps clock on when it calls usbmisc_imx API to change non-core register. > > Besides, we will support runtime pm in the future, it also needs to > close this clock when the usb is not in use. > > Philipp Zabel also verifies it at imx6q platform, see > http://www.spinics.net/lists/linux-usb/msg118491.html > > Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> > Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> > --- > drivers/usb/chipidea/usbmisc_imx.c | 19 ------------------- > 1 file changed, 19 deletions(-) This commit causes hard lockup when loading ci_hdrc_imx module on my iMX6DL (UDOO Dual) board. Specifically, on current git the lockup happens on read from USBNC register in usbmisc_imx6q_set_wakeup() in usbmisc_imx. This looks like the point where there is a first read from a register during attachment to device. Best regards, Maciej Szmigiero -- 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
