This patch fixes the register offset used for super-speed connection¹s max
packet size.
Without it using the 338x series of devices in enhanced mode will only
allow full or high speed operation to function correctly.
Signed-off-by: Simon Appleby <simon.appleby@xxxxxxxxxxxxxxxxx>
--- linux/drivers/usb/gadget/udc/net2280.h.orig 2016-02-08
09:31:10.000000000 +0000
+++ linux/drivers/usb/gadget/udc/net2280.h 2016-02-08
09:25:32.000000000 +0000
@@ -369,9 +369,20 @@ static inline void set_max_speed(struct
static const u32 ep_enhanced[9] = { 0x10, 0x60, 0x30, 0x80,
0x50, 0x20, 0x70, 0x40, 0x90 };
- if (ep->dev->enhanced_mode)
+ if (ep->dev->enhanced_mode) {
reg = ep_enhanced[ep->num];
- else{
+ switch (ep->dev->gadget.speed) {
+ case USB_SPEED_SUPER:
+ reg += 2;
+ break;
+ case USB_SPEED_FULL:
+ reg += 1;
+ break;
+ case USB_SPEED_HIGH:
+ default:
+ break;
+ }
+ } else {
reg = (ep->num + 1) * 0x10;
if (ep->dev->gadget.speed != USB_SPEED_HIGH)
reg += 1;
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