From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 3/3] M28: Disable USB power on boot
Date: Wed, 23 May 2012 13:53:12 +0200 [thread overview]
Message-ID: <201205231353.12592.marex@denx.de> (raw)
In-Reply-To: <20120523111439.92A0F20025A@gemini.denx.de>
Dear Wolfgang Denk,
> Dear Marek Vasut,
>
> In message <1337729574-30475-3-git-send-email-marex@denx.de> you wrote:
> > This is a precaution to prevent some USB flash drives
> > from misbehaving in early boot stage.
>
> Tested on M28EVK; sorry, but this commit doesn't change behaviour:
> the LED on the stick is still blinking after power-on.
Dang, this must be related to bootrom somehow then. Fabio, can you confirm the
following:
If you turn off the mx28 board, connect usb flashdisc, turn it on -- do you see
the flashdisc led blinking? Any idea what might cause it? This patch forced the
VBUS off, so very early in uboot, the USB flash has no way to blink (unless
there's some surge).
>
> Best regards,
>
> Wolfgang Denk
Best regards,
Marek Vasut
next prev parent reply other threads:[~2012-05-23 11:53 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-22 23:32 [U-Boot] [PATCH 1/3] MX28: Add u-boot.mx28.sd and u-boot.mx28.nand make targets Marek Vasut
2012-05-22 23:32 ` [U-Boot] [PATCH 2/3] MX28: Cleanup mxsboot within make mrproper Marek Vasut
2012-05-22 23:32 ` [U-Boot] [PATCH 3/3] M28: Disable USB power on boot Marek Vasut
2012-05-23 11:14 ` Wolfgang Denk
2012-05-23 11:53 ` Marek Vasut [this message]
2012-05-23 12:48 ` Fabio Estevam
2012-05-23 13:08 ` Marek Vasut
2012-05-23 13:10 ` Fabio Estevam
2012-05-23 13:01 ` Fabio Estevam
2012-05-23 13:07 ` Marek Vasut
2012-05-23 13:15 ` Fabio Estevam
2012-05-23 13:20 ` Marek Vasut
2012-05-23 9:16 ` [U-Boot] [PATCH 1/3] MX28: Add u-boot.mx28.sd and u-boot.mx28.nand make targets Wolfgang Denk
2012-05-23 9:27 ` Marek Vasut
2012-05-23 9:44 ` Marek Vasut
2012-05-23 11:17 ` Wolfgang Denk
2012-05-23 11:34 ` Marek Vasut
2012-05-23 11:47 ` Wolfgang Denk
2012-05-23 12:22 ` Marek Vasut
2012-06-21 20:31 ` Wolfgang Denk
2012-06-22 12:44 ` Marek Vasut
2012-06-22 13:11 ` Wolfgang Denk
2012-05-23 11:16 ` Wolfgang Denk
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