From: Steven Saunderson <[email protected]> Sent: Wednesday, 25 February 2015, 6:30 Subject: Re: [linux-sunxi] CubieTruck internal UARTs with 3.19 kernel for Bluetooth
I think the host UART driver ( serial8250 ) should be dealing with the handshaking. It is hopefully just a question of getting it configured correctly at start up. This could make things simpler. If you can configure the serial port for a null-modem environment then it might be possible to use the standard program. I had assumed it could be configured and that was the reason for suggesting stty crtscts -F /dev/ttyS2 A patch was posted back in May 2014 that added has-hw-flow-control to the DTS bindings:http://lists.openwall.net/linux-kernel/2014/05/28/673 It doesn't appear to have been applied:https://www.kernel.org/doc/Documentation/devicetree/bindings/serial/of-serial.txt There appears another patch renaming the documentation file from of-serial.txt to 8250.txt:https://lkml.org/lkml/2014/11/25/596That doesn't appear to have been applied. So maybe that is why 3.19 doesn't work as expected. Does anyone know the status of hardware flow control for UART on AllWinner SoCs? Al -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
