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| author | Xo Wang <xow@google.com> | 2017-02-15 17:10:15 -0800 |
|---|---|---|
| committer | Patrick Williams <patrick@stwcx.xyz> | 2017-02-20 13:37:30 +0000 |
| commit | c5fa8eee8fa917bb861a830cc08b176bdff3cbcc (patch) | |
| tree | 024ebb787706eba1061c396095ba63898e9e285e /meta-openbmc-machines/meta-openpower | |
| parent | 3b9ab4b5754b0f7fd61fb79da38774209a916c3c (diff) | |
| download | talos-openbmc-c5fa8eee8fa917bb861a830cc08b176bdff3cbcc.tar.gz talos-openbmc-c5fa8eee8fa917bb861a830cc08b176bdff3cbcc.zip | |
meta-zaius: avsbus-control: Raise VDN rails max voltage
Testing showed that the VDN max voltage setting is capping the VCS rail
setpoints when those setpoints are written by the host over AVSbus.
Raise VRMs' upper limit for voltage on the VDN rails to a value that
does not interfere with VCS rail voltages.
This is a hacky workaround for what is possibly a logic error with the
VRMs' firmware and will be rolled back when the root cause is discovered
and corrected.
Signed-off-by: Xo Wang <xow@google.com>
Change-Id: I85fd94f77509bc51aa7909dd7f522163666040fb
Diffstat (limited to 'meta-openbmc-machines/meta-openpower')
2 files changed, 15 insertions, 0 deletions
diff --git a/meta-openbmc-machines/meta-openpower/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control/avsbus-enable@.service b/meta-openbmc-machines/meta-openpower/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control/avsbus-enable@.service index 58f29d3c5..5980d7ceb 100644 --- a/meta-openbmc-machines/meta-openpower/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control/avsbus-enable@.service +++ b/meta-openbmc-machines/meta-openpower/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control/avsbus-enable@.service @@ -5,6 +5,7 @@ Before=obmc-host-start-pre@%i.target Conflicts=obmc-chassis-stop@%i.target [Service] +ExecStart={bindir}/zaius_avsbus.sh vdn_max ExecStart={bindir}/zaius_avsbus.sh enable Type=oneshot RemainAfterExit=yes diff --git a/meta-openbmc-machines/meta-openpower/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control/zaius_avsbus.sh b/meta-openbmc-machines/meta-openpower/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control/zaius_avsbus.sh index c946179e0..e8861f984 100755 --- a/meta-openbmc-machines/meta-openpower/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control/zaius_avsbus.sh +++ b/meta-openbmc-machines/meta-openpower/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control/zaius_avsbus.sh @@ -42,6 +42,15 @@ vrm_avs_disable() i2cset -y $1 $2 0x01 0x80 b } +# Usage: vrm_vout_max_1v1 <bus> <i2c_address> <page> +# Sets VOUT_MAX to 1.1V +vrm_vout_max_1v1() +{ + vrm_set_page "$@" + echo Setting VOUT_MAX=[1.1V] on bus $1 VRM @$2 rail $3... + i2cset -y $1 $2 0x24 0x44c w +} + # Usage: vrm_print <bus> <i2c_address> <page> vrm_print() { @@ -71,7 +80,12 @@ then elif [ "$1" == "disable" ] then for_each_rail vrm_avs_disable +elif [ "$1" == "vdn_max" ] +then + addrs_pages="$vdn_i2c_addr_page" + for_each_rail vrm_vout_max_1v1 else for_each_rail vrm_print echo "\"$0 <enable|disable>\" to control whether VRMs use AVSBus" + echo "\"$0 <vdn_max>\" to set VDN rails VOUT_MAX to 1.1V" fi |
