In-Reply-To: <11829333481977-git-send-email-wei.zhang@freescale.com>
References: <11829333481420-git-send-email-wei.zhang@freescale.com> <11829333481977-git-send-email-wei.zhang@freescale.com>
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Cc: paulus@samba.org, linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org,
       mporter@kernel.crashing.org
From: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH 1/5 v2] Add the explanation and a sample of RapidIO DTS sector to the document of booting-without-of.txt file.
Date: Thu, 28 Jun 2007 11:22:14 +0200
To: Zhang Wei <wei.zhang@freescale.com>
Sender: linux-kernel-owner@vger.kernel.org
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> +    - #address-cells : Address representation for "rapidio" devices.
> +      This field represents the number of cells needed to represent
> +      the RapidIO address of the registers.  For supporting more than
> +      32-bits RapidIO address, this field should be <2>.
> +      See 1) above for more details on defining #address-cells.

What does the RapidIO standard say about number of address
bits?  You want to follow that, so all RapidIO devices can
use the same #address-cells, not just the FSL ones.  Also,
are there different kinds of address spaces on the bus, or
is it just one big memory-like space?


Segher

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