Signed-off-by: Peter Mamonov <pmamonov@xxxxxxxxx>
---
drivers/usb/host/ehci-hcd.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 1146b71..1077ac4 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -940,13 +940,18 @@ static int ehci_probe(struct device_d *dev)
{
struct ehci_data data = {};
struct ehci_platform_data *pdata = dev->platform_data;
+ struct device_node *dn = dev->device_node;
- /* default to EHCI_HAS_TT to not change behaviour of boards
- * without platform_data
- */
if (pdata)
data.flags = pdata->flags;
- else
+ else if (dn) {
+ data.flags = 0;
+ if (of_property_read_bool(dn, "has-transaction-translator"))
+ data.flags |= EHCI_HAS_TT;
+ } else
+ /* default to EHCI_HAS_TT to not change behaviour of boards
+ * without platform_data
+ */
data.flags = EHCI_HAS_TT;
data.hccr = dev_request_mem_region(dev, 0);
@@ -967,9 +972,18 @@ static void ehci_remove(struct device_d *dev)
ehci_halt(ehci);
}
+static __maybe_unused struct of_device_id ehci_platform_dt_ids[] = {
+ {
+ .compatible = "generic-ehci",
+ }, {
+ /* sentinel */
+ }
+};
+
static struct driver_d ehci_driver = {
.name = "ehci",
.probe = ehci_probe,
.remove = ehci_remove,
+ .of_compatible = DRV_OF_COMPAT(ehci_platform_dt_ids),
};
device_platform_driver(ehci_driver);
--
2.1.4
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