* burst
@ 2005-07-28 11:03 Wojciech Kromer
2005-07-28 11:25 ` burst Wojciech Kromer
0 siblings, 1 reply; 2+ messages in thread
From: Wojciech Kromer @ 2005-07-28 11:03 UTC (permalink / raw)
To: linuxppc-embedded
How to enable burst acces for external device?
What i did:
- program UPMx with correct cycles
- setup ORx BRx, and not set BI (BurstInhibit)
- done opremap instead of opremap_nocache
An no burst acces is done.
Do I have to do DMA transfers?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: burst
2005-07-28 11:03 burst Wojciech Kromer
@ 2005-07-28 11:25 ` Wojciech Kromer
0 siblings, 0 replies; 2+ messages in thread
From: Wojciech Kromer @ 2005-07-28 11:25 UTC (permalink / raw)
To: linuxppc-embedded
Forgot to say, it's on mpc8250
> How to enable burst acces for external device?
> What i did:
> - program UPMx with correct cycles
> - setup ORx BRx, and not set BI (BurstInhibit)
> - done opremap instead of opremap_nocache
>
> An no burst acces is done.
>
> Do I have to do DMA transfers?
>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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