USB: ehci-platform: support EHCIs with transaction translator
Some EHCI controllers have a Transaction Translator built into
the root hub. Support this feature in device tree when using
the ehci-platform driver by adding a feature flag for it.
This is needed to get USB working on NXP LPC18xx/43xx platforms.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index d8a75a5..ba07f16 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -202,6 +202,10 @@
"needs-reset-on-resume"))
pdata->reset_on_resume = 1;
+ if (of_property_read_bool(dev->dev.of_node,
+ "has-transaction-translator"))
+ pdata->has_tt = 1;
+
priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
"phys", "#phy-cells");
priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;