On Thu, Aug 17, 2023 at 06:08:23PM +0300, Dmitry Baryshkov wrote: > In the embedded cases, the DisplayPort connector is handled by the TCPM > itself. It was proposed to add the "displayport" OF property to the DT > bindings, but it was rejected in favour of properly describing the > electrical signal path using of_graph. > > Fallback to the controller fwnode for HPD notifications to > support such usecases without requiring additional DT properties. > > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > --- > drivers/usb/typec/altmodes/displayport.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c > index bc4af130940d..a4cf1045b535 100644 > --- a/drivers/usb/typec/altmodes/displayport.c > +++ b/drivers/usb/typec/altmodes/displayport.c > @@ -594,7 +594,10 @@ int dp_altmode_probe(struct typec_altmode *alt) > alt->ops = &dp_altmode_ops; > > fwnode = dev_fwnode(alt->dev.parent->parent); /* typec_port fwnode */ > - dp->connector_fwnode = fwnode_find_reference(fwnode, "displayport", 0); > + if (fwnode_property_present(fwnode, "displayport")) > + dp->connector_fwnode = fwnode_find_reference(fwnode, "displayport", 0); > + else > + dp->connector_fwnode = fwnode_handle_get(fwnode); /* embedded DP */ > if (IS_ERR(dp->connector_fwnode)) > dp->connector_fwnode = NULL; > > -- > 2.39.2 -- heikki
