On Tue, Feb 02, 2021 at 01:31:17AM +0100, Giulio Benetti wrote:

Il 18/05/2020 17:21, Andy Shevchenko ha scritto:

quoted

On Sun, May 17, 2020 at 11:56:10PM +0200, Heiko Stuebner wrote:

quoted

From: Giulio Benetti <redacted>

Need to use rs485 transceiver so let's use existing em485 485 emulation
layer on top of 8250.

Add rs485_config callback to port and uses the standard em485 start and
stop helpers.

Would it prevent to use native RS485 support?

8250_dw doesn't have a native RS485 support, do you mean using hardware
RTS assertion? Anyway at the moment it's not present. This would be the
first rs485 support added to 8250_dw.

DW v4.0+ has it.

-- 
With Best Regards,
Andy Shevchenko