Commit 13266fea authored Aug 13, 2013 by Sebastian Andrzej Siewior Committed by Felipe Balbi Aug 13, 2013

usb: musb: cppi41: Enable in device-TX mode



Since the musb-gadget code now calls the dma engine properly it is
possible to enable it for the TX path in device mode.
AM335x Advisory 1.0.13 says that we may lose the toggle bit on multiple
RX transfers. There is a workaround in host mode but none in device mode
and therefore RX transfers are disabled.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

parent fc525751

drivers/usb/musb/musb_cppi41.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -362,6 +362,9 @@ static int cppi41_is_compatible(struct dma_channel *channel, u16 maxpacket,
		WARN_ON(1);
		return 1;
		}
		if (cppi41_channel->is_tx)
		return 1;
		/* AM335x Advisory 1.0.13. No workaround for device RX mode */
		return 0;
		}