From: jumpingProgrammer <rabbitzp@163.com>
To: linuxppc-dev@ozlabs.org
Subject: a question of mpc8313, maybe simple
Date: Mon, 23 Jun 2008 05:48:07 -0700 (PDT) [thread overview]
Message-ID: <18067094.post@talk.nabble.com> (raw)
i am working with a board of mpc8313 using default mpc8313erdb.dts.
But i do not know how can i correctly use DMA to transport data from memory
to a PCI device.
i tryed this
{
.....
request_irq(IRQ,....);
request_dma(.....);
....
}
In request_irq() , i do not know what is the parameter IRQ.
And , i did not find any words about DMA in mpc8313erdb.dts .
So
1. please tell me what should be the parameter IRQ?
Is it the irq requested when DMA initialized or another one?
2. If i want initialize DMA, how should i do with mpc8313erdb.dts?
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next reply other threads:[~2008-06-23 12:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-23 12:48 jumpingProgrammer [this message]
2008-06-23 17:09 ` a question of mpc8313, maybe simple Scott Wood
2008-06-24 1:13 ` jumpingProgrammer
2008-06-24 17:58 ` Scott Wood
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