Hi Jean-Michel, On Friday 13 March 2009 14:38:55 Jean-Michel Hautbois wrote: > Hi all ! > > I am currently facing a big problem on my MPC8272ADS development board. > I have tried to use the /dev/ttyCPM1 port in order to send data over > the serial cable to another device. > > This is just not working but nothing is sent, my DTR signal is down: > > cat /proc/tty/driver/ttyCPM > > 0: uart:CPM UART mmio:0xF0011A00 irq:40 tx:296 rx:0 RTS|CTS|DTR|DSR|CD > 1: uart:CPM UART mmio:0xF0011A60 irq:43 tx:0 rx:0 CTS|DSR|CD > > So, I have tried to use the serial port /dev/ttyCPM0. It is > successfully sending out my bytes, but I can't configure it !! > When I am trying to use the tcsetattr() function, I don't have any > error, but the signal is always the same (no effect, if you prefer). > > I have tried to disable the kernel console output, but it is not > working, either...
Support for the modem control lines has been added in v2.6.27-rc2. You will need to declare the modem control lines in your device tree. See Documentation/powerpc/dts-bindings/fsl/cpm_qe/serial.txt for more information. Please note that hardware flow control is not supported by the CPM UART driver yet. Best regards, -- Laurent Pinchart CSE Semaphore Belgium Waterloo Office Park Building M Dreve Richelle, 161 B-1410 Waterloo Belgium T +32 (2) 387 42 59 F +32 (2) 387 42 75
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