the following patch was just integrated into master: commit fad3703ce80011ccc0eaef03fb0575f591085d5f Author: Aaron Durbin adurbin@chromium.org Date: Thu Dec 5 12:40:08 2013 -0600
rambi: configure SD card signals
Rambi 1.5 boards use the native SD card controller on baytrail. Therefore, enable those signals. The CLK, D*, and CMD pins use 2K pulls as these were shown to not exhibit any errors when doing reads or writes to a DDR50 sd card.
Note that if a servo is connected on needs to enable the sd_vref_sel rail to pp1800 as this causes issues with card detect if it is not set to pp1800.
BUG=chrome-os-partner:24312 BRANCH=None TEST=Built and booted. Tested sd card read and write works in kernel. Also noted that write protect detection works as well.
Change-Id: I520e2808acbd8494534fcb710411dbc0e12fc874 Signed-off-by: Aaron Durbin adurbin@chromium.org Reviewed-on: https://chromium-review.googlesource.com/178961 Reviewed-by: Shawn Nematbakhsh shawnn@chromium.org Reviewed-on: http://review.coreboot.org/4990 Reviewed-by: Kyösti Mälkki kyosti.malkki@gmail.com Tested-by: build bot (Jenkins)
See http://review.coreboot.org/4990 for details.
-gerrit