[coreboot-gerrit] Patch merged into coreboot/master: 86bd91a nyan*: Clear VDDIO_SDMMC3 to reset SD card reader.

[gerrit at coreboot.org]

the following patch was just integrated into master:
commit 86bd91a69a3fb285ce0ec2c3842d879035ee1269
Author: Hung-Te Lin <hungte at chromium.org>
Date:   Fri Apr 25 08:21:24 2014 +0800

    nyan*: Clear VDDIO_SDMMC3 to reset SD card reader.
    
    When across warm reset, if VDD_3V3_SD_CARD gets power-cycled but VDDIO_SDMMC3
    does not, we will get ~1.5V leakage on VDD. To fix that, we reset VDDIO_SDMMC3
    to 0 along with VDD_3V3_SD_CARD in Coreboot.  Payloads must turn on VDDIO_SDMMC3
    explicitly before accessing SD card.
    
    Note the warnings of "VDD_SDMMC must set early" in comment seems only happens on
    U-Boot and can be removed.
    
    BUG=chrome-os-partner:27053
    BRNACH=nyan
    TEST=Ctrl-U to boot from SD card, login and type "reboot", then Ctrl-U to boot
         again. Without this patch, system will fail in loading kernel.
    
    Original-Change-Id: I7f85995317d18587d514ea3afcff3bfea0a33e93
    Original-Signed-off-by: Hung-Te Lin <hungte at chromium.org>
    Original-Reviewed-on: https://chromium-review.googlesource.com/196961
    Original-Reviewed-by: Gabe Black <gabeblack at chromium.org>
    Original-Tested-by: Andrew Bresticker <abrestic at chromium.org>
    (cherry picked from commit 2cfdb78d9dc229a3c06f19bbe137d59d923908a4)
    Signed-off-by: Marc Jones <marc.jones at se-eng.com>
    
    Change-Id: Ie7d814e0424478c35a56fbc959437ee6a555684a
    Reviewed-on: http://review.coreboot.org/7866
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer <stefan.reinauer at coreboot.org>


See http://review.coreboot.org/7866 for details.

-gerrit