Hello.
Ajay Kumar Gupta wrote:
Isochronous Tx DMA is getting programmed but never getting started
for CPPI and TUSB DMAs and thus Isochronous Tx doesn't work.
That's not true.
Fixing it by starting DMAs using musb_h_tx_dma_start().
Signed-off-by: Swaminathan S <swami.iyer@xxxxxx>
Signed-off-by: Babu Ravi <ravibabu@xxxxxx>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@xxxxxx>
NAK.
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index cf94511..e3ab40a 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -1301,8 +1301,11 @@ void musb_host_tx(struct musb *musb, u8 epnum)
return;
} else if (usb_pipeisoc(pipe) && dma) {
if (musb_tx_dma_program(musb->dma_controller, hw_ep, qh, urb,
- offset, length))
+ offset, length)) {
+ if (is_cppi_enabled() || tusb_dma_omap())
+ musb_h_tx_dma_start(hw_ep);
return;
It will have been already started by this moment -- from
musb_start_urb() which is enough . Otherwise it wouldn't work, and I've
made sure it *does* work.
WBR, Sergei
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