Support musb being probed by ti,musb-am33xx. The non-upstream DT probing
used a wrapper driver that probed ti-musb-peripheral and ti-musb-host.
This wrapper registered as UCLASS_MISC, which is why it is requested in
this board.c file.

With the new devicetree the wrapper that registers as UCLASS_MISC is
gone, instead the UCLASS_USB and UCLASS_USB_GADGET_GENERIC have to be
requested.

Signed-off-by: Markus Schneider-Pargmann (TI) <[email protected]>
---
 arch/arm/mach-omap2/am33xx/board.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/arch/arm/mach-omap2/am33xx/board.c 
b/arch/arm/mach-omap2/am33xx/board.c
index 
c3931900622957a5499fe6483473c61e3a62fff0..5a006cf309b08d0e035faeb675368da73076e7ed
 100644
--- a/arch/arm/mach-omap2/am33xx/board.c
+++ b/arch/arm/mach-omap2/am33xx/board.c
@@ -264,15 +264,19 @@ int arch_misc_init(void)
 int arch_misc_init(void)
 {
        struct udevice *dev;
-       int ret;
+       int ret = 0;
 
-       /*
-        * Trigger probe of the UCLASS_MISC device which is a USB wrapper driver
-        * ti-musb-wrapper that handles all usb host and gadget devices.
-        */
-       ret = uclass_first_device_err(UCLASS_MISC, &dev);
-       if (ret)
-               printf("Failed probing USB %d, continue without USB\n", ret);
+       if (!IS_ENABLED(CONFIG_OF_UPSTREAM)) {
+               /*
+                * Trigger probe of the UCLASS_MISC device which is a USB
+                * wrapper driver ti-musb-wrapper that handles all usb host and
+                * gadget devices. Note that with OF_UPSTREAM the devices are
+                * bound directly, no wrapper necessary.
+                */
+               ret = uclass_first_device_err(UCLASS_MISC, &dev);
+               if (ret)
+                       printf("Failed probing USB %d, continue without USB\n", 
ret);
+       }
 
 #if defined(CONFIG_DM_ETH) && defined(CONFIG_USB_ETHER)
        if (!ret)

-- 
2.53.0

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