Date: Thu, 7 Jun 2007 22:07:25 +0200 (CEST) From: =?iso-8859-1?Q?Bj=F6rn_K=F6nig?= <bkoenig@alpha-tierchen.de> To: "Warner Losh" <imp@bsdimp.com> Cc: arm@freebsd.org, bkoenig@alpha-tierchen.de, ticso@cicely.de Subject: Re: 4-bit SD Card mode Message-ID: <52309.2001:6f8:101e:0:20e:cff:fe6d:6adb.1181246845.squirrel@webmail.alpha-tierchen.de> In-Reply-To: <20070607.133456.74668036.imp@bsdimp.com> References: <50392.2001:6f8:101e:0:20e:cff:fe6d:6adb.1181235257.squirrel@webmail.alpha-tierchen.de> <20070607180946.GK16463@cicely12.cicely.de> <49754.2001:6f8:101e:0:20e:cff:fe6d:6adb.1181244172.squirrel@webmail.alpha-tierchen.de> <20070607.133456.74668036.imp@bsdimp.com>
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> I'm not sure I like this at all. The devices shouldn't be setting up > the pins for that device. In some cases, they can't know how to do > that, and this is one of them. The device has no way of knowing if > all 4 wires are connected, or just 1 and the 'spare' lines are used > for GPIO. There are similar problems with the serial ports and the > ethernet. You're right. I also forgot that this affects all kind of AT91 controllers and we don't know if this always works this way, not even with one connected data line. > Does the boot loader you are using at least store the board ID in the > place that Linux expects it? At first glance the U-Boot loader doesn't seem to do any board-specific things. I may be mistaken. The board comes with a preinstalled Loader, Linux distribution and a Linux kernel patched by the manufacturer of the board. I'm not sure about this question, so I'll ask the manufacturer. Björn
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