The .bind function is implemented to bind the correct
"half" of the hub that the driver wants to bind,
and returning -ENODEV for the other "half".
Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbar...@amd.com>
---
common/usb_onboard_hub.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/common/usb_onboard_hub.c b/common/usb_onboard_hub.c
index 94ea01a7b0..e29aaa00d4 100644
--- a/common/usb_onboard_hub.c
+++ b/common/usb_onboard_hub.c
@@ -162,6 +162,26 @@ err:
return ret;
}
+static int usb_onboard_hub_bind(struct udevice *dev)
+{
+ struct ofnode_phandle_args phandle;
+ const void *fdt = gd->fdt_blob;
+ int ret, off;
+
+ ret = dev_read_phandle_with_args(dev, "peer-hub", NULL, 0, 0, &phandle);
+ if (ret) {
+ dev_err(dev, "peer-hub not specified\n");
+ return ret;
+ }
+
+ off = ofnode_to_offset(phandle.node);
+ ret = fdt_node_check_compatible(fdt, off, "usb424,5744");
+ if (!ret)
+ return 0;
+
+ return -ENODEV;
+}
+
static int usb_onboard_hub_remove(struct udevice *dev)
{
struct onboard_hub *hub = dev_get_priv(dev);
@@ -201,6 +221,7 @@ static const struct udevice_id usb_onboard_hub_ids[] = {
U_BOOT_DRIVER(usb_onboard_hub) = {
.name = "usb_onboard_hub",
.id = UCLASS_USB_HUB,
+ .bind = usb_onboard_hub_bind,
.probe = usb_onboard_hub_probe,
.remove = usb_onboard_hub_remove,
.of_match = usb_onboard_hub_ids,
--
2.17.1
