From: Segher Boessenkool <segher@kernel.crashing.org>
To: David Gibson <dwg@au1.ibm.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: Document and implement an improved flash device binding
Date: Mon, 3 Sep 2007 12:23:34 +0200 [thread overview]
Message-ID: <143067874eed1b4ee9c75d5272bb5958@kernel.crashing.org> (raw)
In-Reply-To: <20070829061300.GF3206@localhost.localdomain>
> + j) CFI or JEDEC memory-mapped NOR flash
>
> Flash chips (Memory Technology Devices) are often used for solid
> state
> file systems on embedded devices.
Well, almost everything has a NOR flash on it, not just
embedded boards ;-)
> + - bank-width : Width (in bytes) of the flash bank. Equal to the
> + device width times the number of interleaved chips.
> + - device-width : (optional) Width of a single flash chip. If
> + omitted, assumed to be equal to 'bank-width'.
Let's have bank-width optional instead, it's more natural
that way for the common case of just one chip. Or, you can
say that either is optional.
> + flash@ff000000 {
> + compatible = "amd,am29lv128ml", "cfi-flash";
> + reg = <ff000000 01000000>;
> + bank-width = <4>;
This is an 8/16-bit part, you need a device-width ;-)
Need #address-cells here for the child nodes:
> + fs@0 {
> + reg = <0 f80000>;
> + };
[big snip]
> + OpenBIOS@0 {
This show immediately why node name = partition name won't
work out. You're not supposed to start a node name with a
capital like this.
Segher
next prev parent reply other threads:[~2007-09-03 10:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-29 6:13 Document and implement an improved flash device binding David Gibson
2007-08-29 8:43 ` Domen Puncer
2007-08-30 1:18 ` David Gibson
2007-09-03 10:23 ` Segher Boessenkool [this message]
2007-09-05 2:59 ` David Gibson
2007-09-06 13:28 ` Segher Boessenkool
2007-09-07 1:04 ` David Gibson
2007-09-07 13:58 ` Segher Boessenkool
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