* A problem about the uart3 of OMAP osk5912
@ 2006-02-17 8:27 林小玫
2006-02-17 21:08 ` Tony Lindgren
0 siblings, 1 reply; 2+ messages in thread
From: 林小玫 @ 2006-02-17 8:27 UTC (permalink / raw)
To: linux-omap-open-source
Hi there,
I have a problem about the uart3 of OMAP osk5912. The fact is that osk5912
don't have a second substantial uart port. We tried to send a echo signal to
/dev/ttyS02(which is a character device node with the major number 4 and
minor number 65 we made), but there was no voltage change on the TX of
uart3. Can you tell me how to control the second uart of osk5912 under OS?
Further more, can you tell me how to use the USB serial converter? We were
using the GMUS-03 with chipset prolific, although the required convert is
Elecom's US-SGT.
Regards,
May
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: A problem about the uart3 of OMAP osk5912
2006-02-17 8:27 A problem about the uart3 of OMAP osk5912 林小玫
@ 2006-02-17 21:08 ` Tony Lindgren
0 siblings, 0 replies; 2+ messages in thread
From: Tony Lindgren @ 2006-02-17 21:08 UTC (permalink / raw)
To: 林小玫; +Cc: linux-omap-open-source
* 林小玫 <subsun.ece94g@nctu.edu.tw> [060217 00:29]:
> Hi there,
>
> I have a problem about the uart3 of OMAP osk5912. The fact is that osk5912
> don't have a second substantial uart port. We tried to send a echo signal to
> /dev/ttyS02(which is a character device node with the major number 4 and
> minor number 65 we made), but there was no voltage change on the TX of
> uart3. Can you tell me how to control the second uart of osk5912 under OS?
> Further more, can you tell me how to use the USB serial converter? We were
> using the GMUS-03 with chipset prolific, although the required convert is
> Elecom's US-SGT.
If you solder a second UART to osk, you also have to init the additional
internal port. See board-osk.c for that. USB serial port should show up
as /dev/ttyUSB0.
Tony
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