From: Ray Jui <rjui@broadcom.com>
To: "Hauke Mehrtens" <hauke@hauke-m.de>,
"Brian Norris" <computersforpeace@gmail.com>,
linux-mtd@lists.infradead.org,
bcm-kernel-feedback-list@broadcom.com,
"Rafał Miłecki" <zajec5@gmail.com>
Subject: Re: iProc nand iproc-idm register
Date: Mon, 25 May 2015 10:00:01 -0700 [thread overview]
Message-ID: <55635511.30602@broadcom.com> (raw)
In-Reply-To: <5562078A.6030909@hauke-m.de>
Hi Hauke,
On 5/24/2015 10:16 AM, Hauke Mehrtens wrote:
> Hi Ray,
>
> in the iproc_nand driver your are using this register range:
> reg = <0x18046000 0x600>, <0xf8105408 0x600>, <0x18046f00 0x20>;
> reg-names = "nand", "iproc-idm", "iproc-ext";
>
> I think the iproc-idm register range is the wrap address part on bcma
> bus. On the bcma bus it is 0x1000 in size and 0x0408 is the offset of
> the IO control register in it. Are the new iProc devices different here
> or is this register not always at this offset but varies?
It's different. Based on the Cygnus RDB, there's nothing between
0xf8105000 and 0xf8105404.
>
> Wouldn't it be better to specify the complete range like this:
> reg = <0x18046000 0x600>, <0xf8105000 0x1000>, <0x18046f00 0x20>;
> Then you can read the register at offset 0x408 in that range.
>
> Hauke
>
next prev parent reply other threads:[~2015-05-25 17:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-24 17:16 iProc nand iproc-idm register Hauke Mehrtens
2015-05-25 17:00 ` Ray Jui [this message]
2015-05-29 16:24 ` Hauke Mehrtens
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