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RE: SSP in MASTER_BIDIR mode





> We have recently solved a case where the syncser driver would cause 
> high CPU load. I'll send an updated driver to you.

Thank you, Mikael.
To use the updated driver I think I could replace sync_serial.c with the
new 
version, then 'make kernel', 'make images' and run a 'ktest'. Is this
procedure ok?

Regards,
Carlos



> -----Original Message-----
> From: owner-dev-etrax@xxxxxxx.com">mailto:owner-dev-etrax@xxxxxxx.com] On 
> Behalf Of Carlos Ojea
> Sent: Thursday, October 16, 2003 5:51 PM
> To: dev-etrax
> Subject: SSP in MASTER_BIDIR mode
>
>
>
> Hello:
>
> When I configure SSP in MASTER_BIDIR mode my program runs very, very, 
> slowly and CLOCK_GATED does not work (master output mode works ok).
>
> Here is part of my program:
> devspi = open ("/dev/syncser0", O_RDWR | O_SYNC | O_NONBLOCK); ioctl 
> (devspi, SSP_MODE, MASTER_BIDIR); ioctl (devspi, SSP_FRAME_SYNC, 
> FLOW_CONTROL_DISABLE); ioctl (devspi, SSP_FRAME_SYNC, CLOCK_GATED);
>
> Anybody knows why or have any clue?
>
> Regards,
> Carlos