From: Tom Rini <trini@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mmc: omap: follow TRM procedure to power on cards
Date: Mon, 19 Mar 2012 09:44:01 -0700 [thread overview]
Message-ID: <4F676251.4020806@ti.com> (raw)
In-Reply-To: <1332165053-21526-1-git-send-email-notasas@gmail.com>
On 03/19/2012 06:50 AM, Grazvydas Ignotas wrote:
> According to OMAP3 TRM, PBIASLITEPWRDNZ bits must be cleared while MMC
> power supply is being enabled and is ramping up (those bits might be
> left set by the previous bootloader). It doesn't say what happens if
> this procedure is violated, but better not to risk here and do things
> as required.
While in favor of correctness (and putting / moving up reconciling Linux
and U-Boot omap MMC drivers on my TODO list), does this help with the
problem you had reported before? Thanks!
--
Tom
next prev parent reply other threads:[~2012-03-19 16:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-19 13:50 [U-Boot] [PATCH] mmc: omap: follow TRM procedure to power on cards Grazvydas Ignotas
2012-03-19 16:44 ` Tom Rini [this message]
2012-03-19 16:53 ` Grazvydas Ignotas
2012-03-19 23:45 ` Tom Rini
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