tree 2cb493679821278ea81ab726eb3b6e674c46f2e6
parent 0467dff0309afdf82660b35f461b9a17677c5a6d
author Xo Wang <xow@google.com> 1489533329 -0700
committer Patrick Williams <patrick@stwcx.xyz> 1489613057 +0000

meta-zaius: avsbus-control: Add VOUT_COMMAND workaround

When switching voltage regulator modules (VRM) on Zaius to AVSBus-
controlled operation, the initial output voltage should be copied from
the PMBus VOUT_COMMAND register. However, the Intersil VRM does not
perform the copy following the first switch from PMBus- to AVSBus-
controlled operation.

Add a workaround to the AVSBus enable step that writes the value of
VOUT_COMMAND to itself in order to initialize the otherwise BMC
inaccessible AVSBus voltage setpoint.

Signed-off-by: Xo Wang <xow@google.com>
Change-Id: I3335586d98e95eb52d44d6d31e688f9b7c292136