On Fri, Jun 26, 2015 at 03:47:03PM +0200, Mike Looijmans wrote: > The datasheet for the 334x PHY mentions that a reset can be performed: > "... by bringing the pin low for a minimum of 1 microsecond and > then high." > A delay of 5ms to implement that seems overly long, so reduce it to > just 1us. > As for the delay after reset, the datasheet only mentioned that the > chip will assert the DIR output. 1ms seems like a safe time to wait > for that to happen, so no change there. > > Signed-off-by: Mike Looijmans <mike.looijmans@xxxxxxxx> > --- > drivers/usb/chipidea/core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c > index e970863..c865abe 100644 > --- a/drivers/usb/chipidea/core.c > +++ b/drivers/usb/chipidea/core.c > @@ -664,7 +664,7 @@ static int ci_hdrc_create_ulpi_phy(struct device *dev, struct ci_hdrc *ci) > dev_err(dev, "Failed to request ULPI reset gpio: %d\n", ret); > return ret; > } > - msleep(5); > + udelay(1); > gpio_set_value_cansleep(reset_gpio, 1); > msleep(1); > } > -- > 1.9.1 > We have no such function at mainline code. -- Best Regards, Peter Chen -- 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
