* ppc440 EBC question
@ 2005-12-20 7:52 Peter Fercher
2005-12-26 19:06 ` Roland Dreier
0 siblings, 1 reply; 2+ messages in thread
From: Peter Fercher @ 2005-12-20 7:52 UTC (permalink / raw)
To: 'linux-ppc-embedded'
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does somebody have a hint where to find an example how to
talk to devices attached to the ppc440 external bus controller
thanks
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: ppc440 EBC question
2005-12-20 7:52 ppc440 EBC question Peter Fercher
@ 2005-12-26 19:06 ` Roland Dreier
0 siblings, 0 replies; 2+ messages in thread
From: Roland Dreier @ 2005-12-26 19:06 UTC (permalink / raw)
To: Peter Fercher; +Cc: 'linux-ppc-embedded'
Peter> does somebody have a hint where to find an example how to
Peter> talk to devices attached to the ppc440 external bus
Peter> controller
I don't know of public example code but in general it is pretty easy.
Just set up the EBC registers to map your device into some unused
address space, and then use ioremap() and friends to access the bus.
- R.
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2005-12-20 7:52 ppc440 EBC question Peter Fercher
2005-12-26 19:06 ` Roland Dreier
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