MPC8260 SCC UART hardware flow control

Wolfgang Denk wd at
Thu Jul 20 04:37:40 EST 2006

In message <200607191718.00328.laurent.pinchart at> you wrote:
> I was wondering if anyone had implemented hardware flow control support in the 
> cpm_uart driver. If not, I would appreciate pointers regarding how to do so.

You can probably take our 2.4 kernel code as a starting point. But be
aware of the inherent restrictions of the CPM, see

[In the end, you might want to configure  the  handshake  signals  as
GPIO lines and controll these manually. But then you will have to ask
yourself why you are using a CPM...]

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at
The average woman would rather have beauty than brains,  because  the
average man can see better than he can think.

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