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rambi: limit SD card controller to 2.0 spec

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The rambi board can only meet the SD card 2.0 specification.
Therefore, the controller capabilities need to be overridden
to match.

BUG=chrome-os-partner:24423
BRANCH=None
TEST=Built and booted. /sys/kernel/debug/mmc0/ios shows
     high speed as maximum timing as well as 3.3V signal voltage.

Change-Id: Ib3824800852376e0f15a70584917d6692087ccfe
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/179415
This commit is contained in:
Aaron Durbin 2013-12-10 09:01:41 -08:00 • committed by chrome-internal-fetch
commit bcbad6b528
1 changed files with 4 additions and 0 deletions
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4
src/mainboard/google/rambi/devicetree.cb
View file

@ -27,6 +27,10 @@ chip soc/intel/baytrail
register "lpe_codec_clk_freq" = "25" # 25MHz clock
register "lpe_codec_clk_num" = "0" # PMC_PLT_CLK[0]
# SD Card controller
register "sdcard_cap_low" = "0x036864b2"
register "sdcard_cap_high" = "0x0"
device cpu_cluster 0 on
device lapic 0 on end
end