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[am335x] Fix HDMI suport for Beaglebone Black

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Fallback to Linux video interface bindings introduced in r313068 worked
with then current DTS but that DTS turned out to be not conformant to
the the bindings spec. DTS import in r314854 fixed the conformancy but
broke the functionality. This commit syncs up functionality to the actual
spec.

Reported by:	manu@
This commit is contained in:
Oleksandr Tymoshenko 2017-03-30 21:54:57 +00:00
parent b65ec5e523
commit dda1957040
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=316306
1 changed files with 9 additions and 7 deletions
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16
sys/arm/ti/am335x/am335x_lcd.c
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@ -342,7 +342,7 @@ am335x_mode_is_valid(const struct videomode *mode)
static void
am335x_read_hdmi_property(device_t dev)
{
phandle_t node;
phandle_t node, xref;
phandle_t endpoint;
phandle_t hdmi_xref;
struct am335x_lcd_softc *sc;
@ -372,13 +372,15 @@ am335x_read_hdmi_property(device_t dev)
return;
for (endpoint = OF_child(node); endpoint != 0; endpoint = OF_peer(endpoint)) {
if (OF_getencprop(endpoint, "remote-endpoint", &node, sizeof(node)) != -1) {
/* port node of remote endpoint */
node = OF_node_from_xref(node);
/* port/ node */
if (OF_getencprop(endpoint, "remote-endpoint", &xref, sizeof(xref)) != -1) {
/* port/port@0/endpoint@0 */
node = OF_node_from_xref(xref);
/* port/port@0 */
node = OF_parent(node);
/* actual owner of port/endpoint, in our case HDMI framer */
sc->sc_hdmi_framer = OF_parent(node);
/* port */
node = OF_parent(node);
/* actual owner of port, in our case HDMI framer */
sc->sc_hdmi_framer = OF_xref_from_node(OF_parent(node));
if (sc->sc_hdmi_framer != 0)
return;
}