On 09/16/2014 12:55 PM, Sebastian Andrzej Siewior wrote:

On 09/15/2014 07:01 PM, Sebastian Andrzej Siewior wrote:

quoted

On 09/11/2014 04:35 PM, Peter Hurley wrote:

quoted

I do need to find out if omap hardware sets UART_MSR_DCTS when auto CTS
is on. Would you mind running the debug patch below with HW flow control on?

I didn't forget about this. However I told minicom to use hardware flow
control (and I see the driver set the HW bit) but I haven't seen that
uart_handle_cts_change() has been invoked at all. I'm going to check
two other boards and report then.

No, I don't get into this at all function.

Ok, good to know. Thanks for testing that.

So I connected my am335x-evm
with beagle board xm because both of them have an old fashion UART
connector (instead those uart-to-usb). Both configured with HW-Flow and
I haven't seen the function invoked but I saw "port->icount.overrun"
being incremented. This shouldn't happen. So I am a little puzzled here?

Yeah, that's weird. Do you have a break-out box to confirm that RTS/CTS are
being driven?

Regards,
Peter Hurley