From: Segher Boessenkool <segher@kernel.crashing.org>
To: Scott Wood <scottwood@freescale.com>
Cc: linuxppc-dev@ozlabs.org, paulus@samba.org
Subject: Re: [PATCH 1/5] Add Freescale DMA and DMA channel to Documentation/powerpc/booting-without-of.txt file.
Date: Fri, 7 Sep 2007 18:30:44 +0200 [thread overview]
Message-ID: <2e143fec3dc983f2ab4565f3bdc84d23@kernel.crashing.org> (raw)
In-Reply-To: <20070907153116.GA15770@ld0162-tx32.am.freescale.net>
>> Those don't agree. It's probably best to describe the whole
>> DMA controller register block in this node. Why do you need
>> subnodes for the channels at all?
>
> The channels have separate registers and sometimes separate interrupts
> --
> it's simpler to bind to a channel at a time than to parse a list of reg
> blocks and interrupts. It's also more flexible in case a new chip
> comes
> out with more/fewer channels, or if certain channels are not general
> purpose.
I don't see this as more flexible, but no problem, it will work
for sure.
The "reg" vs. textual unit address issue needs to be solved though.
Segher
next prev parent reply other threads:[~2007-09-07 16:30 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-07 10:53 [PATCH 0/5] DMA engine driver for Freescale MPC85xx processors Zhang Wei
2007-09-07 10:53 ` [PATCH 1/5] Add Freescale DMA and DMA channel to Documentation/powerpc/booting-without-of.txt file Zhang Wei
2007-09-07 10:53 ` [PATCH 2/5] Add Freescale DMA engine driver maintainer Zhang Wei
2007-09-07 10:53 ` [PATCH 3/5] Add DMA of-node to mpc8641hpcn board dts Zhang Wei
2007-09-07 10:53 ` [PATCH 4/5] Add of-device and DMA bus support to MPC8641HPCN board Zhang Wei
2007-09-07 21:10 ` [PATCH 3/5] Add DMA of-node to mpc8641hpcn board dts Scott Wood
2007-09-10 3:27 ` [PATCH 2/5] Add Freescale DMA engine driver maintainer David Gibson
2007-09-11 10:07 ` Zhang Wei-r63237
2007-09-07 14:43 ` [PATCH 1/5] Add Freescale DMA and DMA channel to Documentation/powerpc/booting-without-of.txt file Segher Boessenkool
2007-09-07 15:31 ` Scott Wood
2007-09-07 16:30 ` Segher Boessenkool [this message]
2007-09-10 3:25 ` David Gibson
2007-09-11 10:01 ` Zhang Wei-r63237
2007-09-11 14:19 ` Scott Wood
2007-09-12 10:13 ` Zhang Wei-r63237
2007-09-12 15:19 ` Scott Wood
2007-09-13 2:09 ` Segher Boessenkool
2007-09-13 14:52 ` Scott Wood
2007-09-13 15:11 ` Kumar Gala
2007-09-13 18:55 ` Segher Boessenkool
2007-09-13 18:59 ` Scott Wood
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