On Tue, Sep 08, 2015 at 04:10:12PM -0500, Bin Liu wrote: > Set musb config->maximum_speed based on the dts setting to control musb > speed. > > By default musb works in high-speed mode. Adding > > maximum-speed = "full-speed"; > > to dts usb node will force musb to full-speed mode. > > Signed-off-by: Bin Liu <b-liu@xxxxxx> > --- > drivers/usb/musb/musb_dsps.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c > index 0ca6011..268e2b5 100644 > --- a/drivers/usb/musb/musb_dsps.c > +++ b/drivers/usb/musb/musb_dsps.c > @@ -736,6 +736,11 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, > pdata.power = get_int_prop(dn, "mentor,power") / 2; > config->multipoint = of_property_read_bool(dn, "mentor,multipoint"); > > + config->maximum_speed = of_usb_get_maximum_speed(musb->dev.of_node); > + if (config->maximum_speed == USB_SPEED_UNKNOWN || > + config->maximum_speed > USB_SPEED_HIGH) I'd add a log message for > HIGH. That would mean somebody thinks musb can work in super speed. -- balbi
Attachment:
signature.asc
Description: Digital signature
