From: Mike Frysinger <vapier@gentoo.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] convention for SPI dummy data?
Date: Fri, 23 Apr 2010 11:08:10 -0400 [thread overview]
Message-ID: <201004231108.11427.vapier@gentoo.org> (raw)
In-Reply-To: <20100423084307.GN20047@leila.ping.de>
On Friday 23 April 2010 04:43:07 Wolfgang Wegner wrote:
> However, one of the things I had to change was the dummy data sent
> out by SPI for read-only transactions. The original driver had all
> zeros, for SD/MMC all ones (0xFF) is needed.
>
> Is such a change acceptable, or is there any configuration option/flag
> I could use?
if it isnt part of the SPI/MMC spec, use a config option named like IDLE_VAL.
changing the default to 0xff is OK i think.
-mike
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next prev parent reply other threads:[~2010-04-23 15:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-23 8:43 [U-Boot] convention for SPI dummy data? Wolfgang Wegner
2010-04-23 15:08 ` Mike Frysinger [this message]
2010-04-23 15:18 ` Wolfgang Wegner
2010-04-23 15:34 ` Wolfgang Wegner
2010-04-23 15:34 ` Mike Frysinger
2010-04-23 15:49 ` Wolfgang Wegner
2010-04-23 15:43 ` [U-Boot] [PATCH RFC] add CONFIG_SPI_IDLE_VAL for cf_spi.c to allow use of spi_mmc Wolfgang Wegner
2011-06-13 18:27 ` Terje B. Nilsen
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