dm: usb: Add a uclass for USB controllers
Add a uclass that can represent a USB controller. For now we do not create
devices for things attached to the controller. This will be added later.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index b4a9442..a4414ef 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -35,6 +35,20 @@
if USB
+config DM_USB
+ bool "Enable driver model for USB"
+ depends on USB && DM
+ help
+ Enable driver model for USB. The USB interface is then implemented
+ by the USB uclass. Multiple USB controllers of different types
+ (XHCI, EHCI) can be attached and used. The 'usb' command works as
+ normal. OCHI is not supported at present.
+
+ Much of the code is shared but with this option enabled the USB
+ uclass takes care of device enumeration. USB devices can be
+ declared with the USB_DEVICE() macro and will be automatically
+ probed when found on the bus.
+
source "drivers/usb/host/Kconfig"
config USB_STORAGE