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From: Jerry Van Baren <gerald.vanbaren@smiths-aerospace.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] Does CFG_CMD_SDRAM only use for SDRAM DIMMs?
Date: Mon, 4 Apr 2005 08:38:10 -0400	[thread overview]
Message-ID: <42513532.7020407@smiths-aerospace.com> (raw)
In-Reply-To: <20050402085527.0A157C108D@atlas.denx.de>

Wolfgang Denk wrote:
> In message <20050402075050.98724.qmail@web15908.mail.cnb.yahoo.com> you wrote:
> 
>>>>>	CFG_CMD_SDRAM   * print SDRAM configuration information
>>
>>Well, should we add a note beside it like 
>>"Must be used with CFG_CMD_I2C" to show their
>>relationship?
> 
> 
> Good idea. Submit a patch?
> 
> Best regards,
> 
> Wolfgang Denk

When you are submitting this patch ;-), you might want to add a note 
that this is reading from the standard configuration information from 
the I2C EEPROM on a DIMM memory module.  This command is not useful for 
built-in SDRAM memories (i.e. soldered to the motherboard).

I suspect that applies to Frank and the SDRAM configuration read command 
is not useful for him.  In general, if you have DIMM memory modules, you 
probably have I2C enabled in order to configure them.  Conversely, if 
you don't have I2C, you probably don't have DIMM memory modules and the 
command is useless.  The third case is that you have DIMM memory modules 
but are not using the I2C configuration information out of them... in 
that case you should be adding I2C and the automatic configuration.

gvb

  reply	other threads:[~2005-04-04 12:38 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-02  7:50 [U-Boot-Users] Does CFG_CMD_SDRAM only use for SDRAM DIMMs? Sam Song
2005-04-02  8:55 ` Wolfgang Denk
2005-04-04 12:38   ` Jerry Van Baren [this message]
  -- strict thread matches above, loose matches on Subject: below --
2005-04-01  1:06 Frank
2005-04-01  0:39 Sam Song
2005-03-31 14:46 Sam Song
2005-03-31 16:02 ` Wolfgang Denk

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