Change in coreboot[master]: mb/google/poppy/variants/rammus: fix S0ix entering issue

[Zhuohao Lee (Code Review)]

Zhuohao Lee has uploaded this change for review. ( https://review.coreboot.org/28543

Change subject: mb/google/poppy/variants/rammus: fix S0ix entering issue
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mb/google/poppy/variants/rammus: fix S0ix entering issue

As we don't use the MIPI camera on Rammus, disabling SA Imaging Unit and
CIO2 devices to avoid the system failed to enter S0ix.

BUG=b:114502527
BRANCH=master
TEST=On DUT, echo freeze > /sys/power/state
     1. check the S0ix status on EC console
     2. check the value of /sys/kernel/debug/pmc_core/slp_s0_residency_usec

Change-Id: I91629732db01ee534f0ddb67a2b358d725ef810e
Signed-off-by: Zhuohao Lee 
---
M src/mainboard/google/poppy/variants/rammus/devicetree.cb
1 file changed, 2 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/43/28543/1

diff --git a/src/mainboard/google/poppy/variants/rammus/devicetree.cb b/src/mainboard/google/poppy/variants/rammus/devicetree.cb
index 0e8ce4d..efed964 100644
--- a/src/mainboard/google/poppy/variants/rammus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/rammus/devicetree.cb
@@ -40,8 +40,8 @@
    register "EnableTraceHub" = "0"
    register "SsicPortEnable" = "0"
    register "SmbusEnable" = "1"
-	register "Cio2Enable" = "1"
-	register "SaImguEnable" = "1"
+	register "Cio2Enable" = "0"
+	register "SaImguEnable" = "0"
    register "ScsEmmcEnabled" = "1"
    register "ScsEmmcHs400Enabled" = "1"
    register "ScsSdCardEnabled" = "2"