This bit allows the MUSB controller to negotiate for high-speed mode when
the device is reset by the hub. If unset, Babble errors occur with
high-speed mass storage devices right after the first packet. This condition
is not caught by the interrupt handles in U-Boot, so no recovery is done,
and the USB communication is stuck.
To fix this, set the bit unconditionally, not only for
CONFIG_USB_GADGET_DUALSPEED but also for host-only modes.
Signed-off-by: Daniel Mack <zon...@gmail.com>
---
drivers/usb/musb-new/musb_core.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/usb/musb-new/musb_core.c b/drivers/usb/musb-new/musb_core.c
index 36681b6..eeaacdf 100644
--- a/drivers/usb/musb-new/musb_core.c
+++ b/drivers/usb/musb-new/musb_core.c
@@ -943,9 +943,7 @@ void musb_start(struct musb *musb)
/* put into basic highspeed mode and start session */
musb_writeb(regs, MUSB_POWER, MUSB_POWER_ISOUPDATE
-#ifdef CONFIG_USB_GADGET_DUALSPEED
| MUSB_POWER_HSENAB
-#endif
/* ENSUSPEND wedges tusb */
/* | MUSB_POWER_ENSUSPEND */
);
--
1.9.3
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